Nimonic Alloy 80A

Embed Size (px)

DESCRIPTION

machining

Citation preview

  • NIM

    ONIC

    al

    loy

    80A

    wwwwww..ssppeecciiaallmmeettaallss..ccoomm

    TTaabbllee 11 - Limiting Chemical Composition, % by Weight

    Carbon........................................................................0.10 max.

    Chromium....................................................................18.0-21.0

    Silicon ............................................................................1.0 max

    Copper..........................................................................0.2 max.

    Iron................................................................................3.0 max.

    Manganese ...................................................................1.0 max.

    Titanium...........................................................................1.8-2.7

    Aluminum ........................................................................1.0-1.8

    Cobalt ...........................................................................2.0 max.

    Boron ........................................................................0.008 max.

    Zirconium....................................................................0.15 max.

    Lead........................................................................0.0025 max.

    Sulfur ........................................................................0.015 max.

    Nickel............................................................................Balance*

    TTaabbllee 22 - Physical Properties

    NIMONIC alloy 80A (UNS N07080/W. Nr. 2.4952 &2.4631) is a wrought, age-hardenable nickel-chromiumalloy, strengthened by additions of titanium, aluminumand carbon, developed for service at temperatures up to815C (1500F). It is produced by high-frequencymelting and casting in air for forms to be extruded.Electroslag refined material is used for forms to beforged. Vacuum refined versions are also available.NIMONIC alloy 80A is currently used for gas turbinecomponents (blades, rings and discs), bolts, nuclearboiler tube supports, die casting inserts and cores, andfor automobile exhaust valves.

    The alloys limiting chemical composition is givenin Table 1 (as in British Standard HR1, 201, 401 and601).

    Density, g/cm3....................................................................8.19

    lb/in3 ...................................................................0.296

    Melting Range, C.....................................................1320-1365

    F.....................................................2410-2490

    Magnetic Properties

    Mass Susceptibility ............................5.85 x 10-6 at 1000 gauss

    Volume Susceptibility .........................4.78 x 10-5 at 1000 gauss

    Magnetic Permeability..............1.000601 for 200-2000 oersted

    CC FF JJ//kkgg CC BBttuu//llbb FF

    PPhhyyssiiccaall PPrrooppeerrttiieessSome physical properties for NIMONIC alloy 80A aregiven in Table 2. The density was determined onextruded bar, subsequently forged, and extrudedsection, subsequently cold rolled, given a heat treatmentof 8 hours/1080C (1976F)/air cool + 16 hours/700C(1292F)/air cool.

    The liquidus temperature was determined byinverse cooling techniques, and the solidus bymetallographic examination. The accuracy ofdetermination was 5C (9F) for the liquidustemperature and +0, 10C (18F) for the solidus.

    The magnetic property results were obtained from4 casts of cold rolled sheet, heat treated 2-3minutes/1150C (2102F)/fluidized bed quenched + 20minutes/1040C (1904F)/air cooled + 4 hours/750C(1382F)/air cooled.

    The specific heat data in Table 3 are calculatedvalues, using the L.R. Jackson equation.

    The thermal conductivity data (Table 4) werecalculated from electrical resistance measurements on 4fully heat treated specimens using the modifiedWiedermann-Franz equation obtained by R.W. Powell.The material was cold rolled sheet, heat treated 2-3minutes/1150C (2102F)/fluidized bed quenched + 1hour/925C (1697F)/air cooled + 4 hours/750C(1382F)/air cooled.

    Linear thermal expansion data (Table 5) wereobtained from 5 casts of as-extruded section,subsequently cold rolled.

    The electrical resistivity data in Table 6 wereobtained from 4 casts of cold rolled sheet, heat treated2-3 minutes/1150C (2102F)/fluidized bed quenched +1 hour/925C (1697F)/air cooled + 4 hours/750C(1382F)/air cooled.

    TTaabbllee 33 - Specific Heat

    20

    100

    200

    300

    400

    500

    600

    700

    800

    900

    1000

    68

    212

    392

    572

    752

    932

    1112

    1292

    1472

    1652

    1832

    448

    469

    494

    519

    548

    573

    599

    628

    653

    678

    703

    0.107

    0.112

    0.118

    0.124

    0.131

    0.137

    0.143

    0.150

    0.156

    0.162

    0.168

    *Reference to the balance of a composition does not guarantee thisis exclusively of the element mentioned but that it predominates andothers are present only in minimal quantities.

  • NNIIMMOONNIICC aallllooyy 8800AA

    2

    PPhhyyssiiccaall PPrrooppeerrttiieess ((ccoonnttiinnuueedd))

    CC FF WW//mm CC BBttuu//fftthhFF

    TTaabbllee 44 - Thermal Conductivity

    20

    100

    200

    300

    400

    500

    600

    700

    800

    900

    1000

    68

    212

    392

    572

    752

    932

    1112

    1292

    1472

    1652

    1832

    11.2

    11.6

    14.4

    16.1

    17.8

    19.4

    20.8

    22.3

    24.5

    26.5

    28.4

    6.47

    6.71

    8.32

    9.31

    10.3

    11.2

    12.0

    12.9

    14.2

    15.3

    16.4

    CC

    TTaabbllee 55 - Mean Coefficient of Linear Thermal Expansion

    20 100

    200

    300

    400

    500

    600

    700

    800

    900

    1000

    12.7

    13.3

    13.7

    14.1

    14.4

    15.0

    15.5

    16.2

    17.1

    18.1

    12.8

    13.3

    13.7

    14.1

    14.5

    15.0

    15.5

    16.2

    17.1

    18.2

    68 212

    392

    572

    752

    932

    1112

    1292

    1472

    1652

    1832

    7.1

    7.4

    7.6

    7.8

    8.0

    8.3

    8.6

    9.0

    9.5

    10.1

    7.1

    7.4

    7.6

    7.8

    8.1

    8.3

    8.6

    9.0

    9.5

    10.1

    FF1100--66//CC

    AA BB

    1100--66//FF

    AA BB

    AA Heat treated 8 hours/1080C (1976F)/air cooled + 16 hours/700C (1292F)/air cooled.

    BB Heat treated 8 hours/1080C (1976F)/air cooled + 24 hours/850C (1562F)/air cooled+ 16 hours/700C (1292F)/air cooled.

    CC FF RReellaattiivvee RReessiissttaannccee

    TTaabbllee 66 -- Electrical Resistivity

    20

    100

    200

    300

    400

    500

    600

    700

    800

    900

    1000

    68

    212

    392

    572

    752

    932

    1112

    1292

    1472

    1652

    1832

    1.000

    1.008

    1.023

    1.040

    1.064

    1.073

    1.064

    1.064

    1.057

    1.032

    1.017

    124 cm (746 /circ mil ft) at 20C (68F)

    CC FF GGPPaa 110033 kkssii

    20

    100

    200

    300

    400

    500

    600

    700

    800

    900

    1000

    68

    212

    392

    572

    752

    932

    1112

    1292

    1472

    1652

    1832

    85

    84

    82

    79

    77

    74

    70

    67

    64

    58

    53

    12.3

    12.2

    11.9

    11.5

    11.2

    10.7

    10.2

    9.7

    9.3

    8.4

    7.7

    TTaabbllee 77 -- Torsional Modulus

    Cold rolled sheet (4 casts). Heat treated 2-3 minutes/1150C (2102F)/fluidized bed quenched + 20 minutes/ 1040C (1904F)/air cooled +4 hours/750C (1382F)/air cooled.

  • NNIIMMOONNIICC aallllooyy 8800AA

    3

    PPrrooppeerrttyy

    TTeesstt PPrrooggrraamm

    TTaabbllee 88 -- Dynamic Youngs Modulus

    AA BB CC DD

    GGPPaa ((1100 33 kkssii)) GGPPaa ((1100 33 kkssii)) GGPPaa ((1100 33 kkssii)) GGPPaa ((1100 33 kkssii))

    20 (68)100 (212)200 (392)300 (572)400 (752)500 (932)600 (1112)700 (1292)800 (1472)900 (1652)

    1000 (1832)

    183 (26.5)179 (30.0)173 (25.1)168 (24.4)163 (23.6)157 (22.8)150 (21.8)142 (20.6)134 (19.4)123 (17.8)112 (16.2)

    219 (31.8)216 (31.3)210 (30.5)204 (29.6)197 (28.6)191 (27.7)183 (26.5)175 (25.4)165 (23.9)153 (22.2)141 (20.5)

    214 (31.0)210 (30.5)205 (29.7)199 (28.9)192 (27.8)185 (26.8)178 (25.8)170 (24.7)161 (23.3)149 (21.6)134 (19.4)

    222 (32.2)219 (31.8)213 (30.9)208 (30.2)201 (29.2)194 (28.1)188 (27.3)180 (26.1)170 (24.7)159 (23.1)145 (21.0)

    AA.. Extruded bar (12 casts). Heat treated 8 hours/1080C (1976F)/air cooled + 16 hours/700C (1292F)/air cooled.

    BB.. Extruded bar, subsequently forged (13 casts). Heat treated 8 hours/1080C (1796F)/air cooled + 16 hours/700C (1292F)/air cooled.

    CC.. Extruded section, subsequently cold rolled (5 casts). Heat treated 8 hours/1080C (1796F)/air cooled + 16 hours/700C (1292F)/air cooled.

    DD.. Cold rolled sheet (4 casts). Heat treated 2-3 minutes/1150C (2102F)/fluidized bed quenched + 20 minutes/1040C (1904F)/air cooled + 4 hours/750C (1382F)/air cooled. Dynamic moduli are usually about 0.2% higher than static moduli at room temperature, increasing to 1% at 1000C (1832F).

    MMeecchhaanniiccaall PPrrooppeerrttiieess

    The tensile data quoted in Figures 1 to 11 are for bar, sectionand sheet after the recommended treatments. Statistical dataon the scatter of results from tests on production material areshown in Figures 1 to 6.

    Strain rate 0.005/min to proof stress at room temperature,0.002/min to proof stress at elevated temperatures, and0.1/min therafter.

    NNoottee:: iinn FFiigguurreess 11 ttoo 1111A = ElongationRm = Tensile StrengthRp0.2 = 0.2% Proof StressZ = Reduction of Area

  • NNIIMMOONNIICC aallllooyy 8800AA

    4

    Str

    ess,

    MP

    a

    Z %

    FFiigguurree 11.. Tensile properties of extruded bar. Heat treated 8 hours/1080C(1976F)/air cooled + 16 hours/700C (1292F)/air cooled. 98%confidence region calculated on 13 casts.

    FFiigguurree 22.. Tensile properties of extruded bar. Heat treated 8 hours/1080C(1976F)/air cooled + 16 hours/700C (1292F)/air cooled. 98%confidence region calculated on 13 casts.

    Z

    Rp 0.2

    C

    0 200 400 600 800 1000

    1600

    F

    200 400 600 800 1000 1200 1400 1600 1800S

    tres

    s, k

    si

    A %

    C

    0 200 400 600 800 1000

    F200 400 600 800 1000 1200 1400 1600 1800

    Str

    ess,

    ksi

    Str

    ess,

    MP

    a

    A

    Rm

    1200

    800

    400

    0

    80

    60

    40

    20

    0

    220

    200

    180

    160

    140

    120

    100

    80

    60

    40

    20

    0

    80

    60

    40

    20

    0

    1600

    1200

    800

    400

    0

    220

    200

    180

    160

    140

    120

    100

    80

    60

    40

    20

    0

  • NNIIMMOONNIICC aallllooyy 8800AA

    5

    Str

    ess,

    MP

    a

    Z %

    FFiigguurree 33.. Tensile properties of extruded bar, subsequently forged. Heattreated 8 hours/1080C (1976F)/air cooled + 16 hours/700C (1292F)/aircooled. 98% confidence region calculated on 15 casts.

    FFiigguurree 44.. Tensile properties of extruded bar, subsequently forged. Heattreated 8 hours/1080C (1976F)/air cooled + 16 hours/700C (1292F)/aircooled. 98% confidence region calculated on 15 casts.

    C

    0 200 400 600 800 1000

    F

    200 400 600 800 1000 1200 1400 1600 1800

    Str

    ess,

    ksi

    A %

    C

    0 200 400 600 800 1000

    F

    200 400 600 800 1000 1200 1400 1600 1800

    Str

    ess,

    ksi

    Str

    ess,

    MP

    a

    Z

    Rp 0.2

    A

    Rm

    1600

    1200

    800

    400

    0

    80

    60

    40

    20

    0

    220

    200

    180

    160

    140

    120

    100

    80

    60

    40

    20

    0

    1600

    1200

    800

    400

    0

    80

    60

    40

    20

    0

    220

    200

    180

    160

    140

    120

    100

    80

    60

    40

    20

    0

  • NNIIMMOONNIICC aallllooyy 8800AA

    6

    Str

    ess,

    MP

    a

    Z %

    FFiigguurree 55.. Tensile properties of extruded bar, subsequently forged. Heattreated 8 hours/1080C (1976F)/air cooled + 24 hours/850C (1562F)/aircooled + 16 hours/700C (1292F)/air cooled. 98% confidence regioncalculated on 11 casts.

    FFiigguurree 66.. Tensile properties of extruded bar, subsequently forged. Heattreated 8 hours/1080C (1976F)/air cooled + 24 hours/850C (1562F)/aircooled + 16 hours/700C (1292F)/air cooled.

    C0 200 400 600 800 1000

    F200 400 600 800 1000 1200 1400 1600 1800

    Str

    ess,

    ksi

    A %

    C

    0 200 400 600 800 1000

    F

    200 400 600 800 1000 1200 1400 1600 1800

    Str

    ess,

    ksi

    Str

    ess,

    MP

    a

    Z

    Rp 0.2

    A

    Rm

    1600

    1200

    800

    400

    0

    80

    60

    40

    20

    0

    220

    200

    180

    160

    140

    120

    100

    80

    60

    40

    20

    0

    1600

    1200

    800

    400

    0

    80

    60

    40

    20

    0

    220

    200

    180

    160

    140

    120

    100

    80

    60

    40

    20

    0

  • NNIIMMOONNIICC aallllooyy 8800AA

    7

    Str

    ess,

    MP

    a

    A,

    Z %

    FFiigguurree 77.. Tensile properties of extruded section, subsequently cold rolled.Heat treated 8 hours/1080C (1976F)/air cooled + 16 hours/700C(1292F)/air cooled.

    FFiigguurree 88.. Tensile properties of extruded bar, subsequently cold rolled.Heat treated 8 hours/1080C (1976F)/air cooled + 24 hours/850C(1562F)/air cooled + 16 hours/700C (1292F)/air cooled. Average resultsof tests calculated on 5 casts.

    C0 200 400 600 800 1000

    F

    200 400 600 800 1000 1200 1400 1600 1800

    Str

    ess,

    ksi

    A,

    Z%

    C0 200 400 600 800 1000

    F200 400 600 800 1000 1200 1400 1600 1800

    Str

    ess,

    ksi

    Str

    ess,

    MP

    a

    Z

    Rp 0.2

    A

    Rm

    A

    Rm

    Z

    Rp 0.2

    1600

    1200

    800

    400

    0

    80

    60

    40

    20

    0

    220

    200

    180

    160

    140

    120

    100

    80

    60

    40

    20

    0

    1600

    1200

    800

    400

    0

    80

    60

    40

    20

    0

    220

    200

    180

    160

    140

    120

    100

    80

    60

    40

    20

    0

  • NNIIMMOONNIICC aallllooyy 8800AA

    8

    Str

    ess,

    MP

    a

    A,

    Z %

    FFiigguurree 1100.. Tensile properties of colled rolled sheet. Heat treated 2 to 3minutes/1150C (2102F)/fluidized bed quenched + 20 minutes/1040C(1904F)/air cooled + 4 hours/750C (1382F)/air cooled. Average results oftests on 5 casts.

    FFiigguurree 99 .. Tensile properties of extruded bar, subsequently cold stretched.Heat treated 8 hours/1080C (1976F)/air cooled + 24 hours/850C(1562F)/air cooled + 16 hours/700C (1292F)/air cooled. Results from 1cast.

    C0 200 400 600 800 1000

    F

    200 400 600 800 1000 1200 1400 1600 1800

    Str

    ess,

    ksi

    A %

    C

    0 200 400 600 800 1000

    F200 400 600 800 1000 1200 1400 1600 1800

    Str

    ess,

    ksi

    Str

    ess,

    MP

    a

    Z

    Rp 0.2

    A

    Rm

    A

    Rm

    Rp 0.2

    1600

    1200

    800

    400

    0

    80

    60

    40

    20

    0

    220

    200

    180

    160

    140

    120

    100

    80

    60

    40

    20

    0

    1600

    1200

    800

    400

    0

    80

    60

    40

    20

    0

    220

    200

    180

    160

    140

    120

    100

    80

    60

    40

    20

    0

  • NNIIMMOONNIICC aallllooyy 8800AA

    9

    Str

    ess,

    MP

    a

    A %

    C

    0 200 400 600 800 1000

    F

    200 400 600 800 1000 1200 1400 1600 1800S

    tres

    s, k

    si

    Rp 0.2

    A

    Rm

    FFiigguurree 1111 .. Tensile properties of cold rolled sheet, welded. Heat treated2 minutes/1150C (2102F)/air cooled + weld + 1 hour/925C (1697F)/aircooled + 4 hours/750C (1382F)/air cooled. Average result of tests on 4casts. Sheet thicknesses, 0.7-1.1 mm (0.03-0.04 inch). T.I.G. welded.

    CCrreeeepp PPrrooppeerrttiieess

    The creep resistance properties of NIMONIC alloy 80Ahave been determined on bar (16-18 casts), section (5 casts),and sheet (1 cast). Total plastic strain data have beendetermined on extruded section and sheet (1 cast).

    Creep properties for extruded bar, subsequently forged,are shown in Figures 12 and 13; for extruded bar,subsequently cold rolled, in Figure 14; and for cold rolledsheet in Figures 13 and 15 by Larson-Miller presentationsand Graham and Walles techniques.

    The Graham and Walles technique assumes that stress-time test points fall on the continuous series of straight linesfor each temperature, with slopes 1/32, 1/16, 1/8, 1/4, 1/2,the change of slope and the distance between the lines beingdependent on a time/temperature relationship.

    Derived total plastic strain data for extruded section,subsequently cold rolled, and for cold rolled sheet, areshown in Tables 9 and 10. Specimens were 9.1-11.7 mm(0.36-0.46 inch) diameter x 76 mm (3.0 inch) gauge length.

    1600

    1200

    800

    400

    0

    80

    60

    40

    20

    0

    220

    200

    180

    160

    140

    120

    100

    80

    60

    40

    20

    0

  • NNIIMMOONNIICC aallllooyy 8800AA

    10

    FFiigguurree 1122 .. Creep properties of NIMONIC alloy 80A extruded bar, subsequently forged. Heat treatment 8 hours/1080C(1976F)/air cooled + 16 hours/700C (1292F)/air cooled. 98% confidence region on 16-18 casts.

    140

    130

    120

    110

    100

    90

    80

    70

    65

    60

    55

    50

    45

    40

    35

    30

    28

    26

    24

    22

    20

    18

    16

    14

    12

    10

    9

    8

    7

    6

    5

    4

    3

    1000

    900

    800

    700

    600

    500

    400

    300

    200

    100

    90

    80

    70

    60

    50

    40

    30

    2010 100 1000 10,000 100,000

    MP

    a

    ksi

    540C (1004F)

    600C (1112F)

    700C (1292F)

    750C (1382F)

    815C (1499F)

    Time, hours

  • FF CC100

    200

    300

    400

    500

    600

    700

    800

    900

    1000

    1100

    1200

    1300

    1400

    1500

    1600

    1700

    1800

    1900

    2000

    2100

    2200

    2300

    20

    100

    200

    300

    400

    500

    600

    700

    800

    900

    1000

    1100

    120010-1 100 101 102 103 104 105

    100908070

    60

    50

    40

    30

    25

    20

    15

    109876

    5

    4

    3

    2

    1.5

    1

    Hours

    10 M

    Pa

    ksi

    150

    100908070

    60

    50

    40

    30

    25

    20

    15

    109876

    5

    4

    3

    2

    1.5

    1

    5 10 15 20 25 30 35

    NNIIMMOONNIICC aallllooyy 8800AA

    11

    FFiigguurree 1133.. Creep rupture properties of NIMONIC alloy 80A bar and sheet.

    Extruded bar, subsequently forged. Heat treated 8 hours/1080C (1976F)/air cooled + 16 hours/700C (1292F)/air cooled.Average results from 16-18 casts.

    Cold rolled sheet. Heat treated 2 minutes/1150C (2102F)/air cooled + 4 hours 750C (1382F)/air cooled. Results from 1 cast.Sheet 1.6mm (0.06 inch) thick.

    Larson-Miller Parameter, T (20 + log t) x 10-3; T in K, t in hours

  • NNIIMMOONNIICC aallllooyy 8800AA

    12

    FFiigguurree 1144 .. Creep properties of NIMONIC alloy 80A extruded section, subsequently cold rolled. Average results from 5 casts.

    140

    130

    120

    110

    100

    90

    80

    70

    65

    60

    55

    50

    45

    40

    35

    30

    28

    26

    24

    22

    20

    18

    16

    14

    12

    10

    9

    8

    7

    6

    5

    4

    3

    1000

    900

    800

    700

    600

    500

    400

    300

    200

    100

    90

    80

    70

    60

    50

    40

    30

    2010 100 1000 10,000 100,000

    MP

    a

    ksi

    Time, hoursHeat treated 8 hours/1080C (1976F)/air cooled + 16 hours/700C (1292F)/air cooled.

    Heat treated 8 hours/1080C (1976F)/air cooled + 24 hours/850C (1562F)/air cooled + 16 hours/700C (1292F)/air cooled.

    notched

    notched

    540C(1004F)

    600C(1112F)

    700C(1292F)

    750C(1382F)

    815C(1499F)

  • NNIIMMOONNIICC aallllooyy 8800AA

    13

    FFiigguurree 1155 .. Creep-rupture properties of NIMONIC alloy 80A cold rolled sheet, 1.6 mm (0.06 inch) thick. Results from 1 cast.

    140

    130

    120

    110

    100

    90

    80

    70

    65

    60

    55

    50

    45

    40

    35

    30

    28

    26

    24

    22

    20

    18

    16

    14

    12

    10

    9

    8

    7

    6

    5

    4

    3

    1000

    900

    800

    700

    600

    500

    400

    300

    200

    100

    90

    80

    70

    60

    50

    40

    30

    2010 100 1000 10,000 100,000

    MP

    a

    ksi

    800C (1472F)

    650C (1202F)

    700C (1292F)

    750C (1382F)

    850C (1562F)

    Time, hours

    Heat treated 2 min/1150C (2102F)/air cooled + 4 hours/750C (1382F)/air cooled.

  • NNIIMMOONNIICC aallllooyy 8800AA

    14

    CC ((FF))SSttrreessss,, MMPPaa ((kkssii)),, ttoo ggiivvee ttoottaall ppllaassttiicc ssttrraaiinn iinn::

    110000hh 330000hh 11000000hh 33000000hh 1100,,000000hh 3300,,000000hhSSttrraaiinn

    %%

    600 (1112)0.1

    0.2

    0.5

    0.1

    0.2

    0.5

    0.1

    0.2

    0.5

    0.1

    0.2

    0.5

    0.1

    0.2

    0.5

    558 (80.9)

    599 (86.9)

    635 (92.1)

    454 (65.8)

    502 (72.8)

    346 (50.2)

    388 (56.3)

    239 (34.7)

    273 (39.6)

    300 (43.5)

    124 (18.0)

    137 (19.9)

    148 (21.5)

    511 (74.1)

    551 (79.9)

    607 (88.0)

    403 (58.4)

    451 (65.4)

    494 (71.6)

    295 (42.8)

    337 (48.9)

    369 (53.5)

    192 (27.8)

    227 (32.9)

    255 (37.0)

    93 (13.5)

    107 (15.5)

    116 (16.8)

    460 (66.7)

    500 (72.5)

    574 (83.2)

    347 (50.3)

    395 (57.3)

    443 (64.2)

    238 (34.5)

    281 (40.7)

    309 (44.8)

    144 (20.9)

    176 (25.5)

    205 (29.7)

    59 (8.6)

    73 (10.6)

    80 (11.6)

    412 (59.7)

    453 (65.7)

    522 (75.7)

    298 (43.2)

    344 (49.9)

    385 (55.8)

    190 (27.6)

    232 (33.6)

    255 (37.0)

    108 (15.7)

    131 (19.0)

    159 (23.1)

    36 (5.2)

    43 (6.2)

    53 (7.7)

    371 (53.8)

    400 (58.0)

    460 (66.7)

    289 (41.9)

    476 (69.0)

    147 (21.3)

    178 (25.8)

    195 (28.3)

    74 (10.7)*

    88 (12.8)

    116 (16.8)

    23 (3.3)

    26 (3.8)

    31 (4.5)

    402 (58.3)*

    266 (38.6)

    124 (18.0)*

    141 (20.5)*

    77 (11.2)*

    15 (2.2)*

    19 (2.8)

    650 (1202)

    700 (1292)

    750 (1382)

    815 (1499)

    TTaabbllee 99 -- Total Plastic Strain (Extruded Section, Subsequently Cold Rolled)Heat treatment 8 hours/1080C (1976F)/air cooled + 16 hours/700C (1292F)/air cooled

    *Extrapolated

    TTaabbllee 1100 -- Total Plastic Strain (Cold Rolled Sheet)Heat treatment 2 min/1150C (2102F)/water quenched + 4 hours/750C (1382F)/air cooled

    CC ((FF))SSttrreessss,, MMPPaa ((kkssii)),, ttoo ggiivvee ttoottaall ppllaassttiicc ssttrraaiinn iinn::

    5500hh 110000hh 330000hh 11000000hhSSttrraaiinn

    %%

    0.1

    0.2

    0.1

    0.2

    0.1

    0.2

    0.1

    0.2

    0.1

    0.2

    422 (61.2)

    479 (69.5)

    275 (39.9)

    332 (48.1)

    165 (23.9)

    205 (29.7)

    102 (14.8)

    130 (18.9)

    73 (10.6)

    93 (13.5)

    377 (54.7)

    432 (62.6)

    235 (34.1)

    289 (41.9)

    137 (19.9)

    175 (25.4)

    85 (12.3)

    108 (15.7)

    59 (8.6)

    74 (10.7)

    307 (44.5)

    366 (53.1)

    176 (25.5)

    225 (32.6)

    102 (14.8)

    131 (19.0)

    62 (9.0)

    77 (11.2)

    39 (5.7)

    51 (7.4)

    224 (32.5)

    286 (41.5)

    125 (18.1)

    161 (23.3)

    71 (10.3)

    91 (13.2)

    42 (6.1)

    53 (7.7)

    23 (3.3)

    31 (4.5)

    650 (1202)

    700 (1292)

    750 (1382)

    800 (1472)

    850 (1562)

  • NNIIMMOONNIICC aallllooyy 8800AA

    15

    FFaattiigguuee PPrrooppeerrttiieess

    Figures 16 to 22 illustrate the fatigue properties of extrudedbar, subsequently cold rolled, heat treated 8 hours/1080C(1976F)/air cooled + 16 hours/700C (1292F)/air cooled,under conditions of uniaxial stressing with varying meanstress.

    The abscissae represent the mean stress, and theordinate fluctuating stress. Thus, a point on the horizontalaxis represents the steady stress which will produce fracturein a specific time in a normal creep rupture test. A point onthe vertical axis indicates the fluctuating stress required toproduce a pure fatigue failure in the same time at theparticular stress frequency adopted.

    The lines radiating from the origin correspond to stressconditions of the form P CP, where P is the steady stressand C is a constant for any lines of 100 and 1000 hours upto 600C (1112F), and 100, 300 and 1000 hours up to750C (1382F) for varying stress conditions.

    Test frequencies of 100-200 cycles/second were usedup to 600C (1112F), thereafter 30-40 cycles/second up to750C (1382F). Mean tensile stress, MPa (ksi)

    200 400 600 800 1000(29) (58) (87) (116) (145)

    Sem

    i-ra

    nge

    of a

    ltern

    atin

    g st

    ress

    , M

    Pa

    (ksi

    )

    FFiigguurree 1166.. Fatigue test at 20C (68F)

    100 h. 60 x 106 Cycles

    1000 h. 600 x 106 Cycles

    P O0

    P

    P

    2P

    P

    P

    P P

    P P

    Mean tensile stress, MPa (ksi)

    Sem

    i-ra

    nge

    of a

    ltern

    atin

    g st

    ress

    , M

    Pa

    (ksi

    )

    FFiigguurree 1177.. Fatigue test at 300C (572F)

    100 h. 60 x 106 Cycles

    1000 h. 600 x 106 Cycles

    P O

    0

    P

    P

    2P

    P

    P

    P P

    Mean tensile stress, MPa (ksi)

    Sem

    i-ra

    nge

    of a

    ltern

    atin

    g st

    ress

    , M

    Pa

    (ksi

    )

    FFiigguurree 1188.. Fatigue test at 480C (896F)

    100 h. 60 x 106 Cycles

    1000 h. 600 x 106 Cycles

    P O

    0

    P

    P

    2P

    P

    P

    P P

    P P

    1000(145)

    800(116)

    600(87)

    400(58)

    200(29)

    0

    200 400 600 800 1000(29) (58) (87) (116) (145)

    200 400 600 800 1000(29) (58) (87) (116) (145)

    1000(145)

    800(116)

    600(87)

    400(58)

    200(29)

    0

    1000(145)

    800(116)

    600(87)

    400(58)

    200(29)

    0

  • NNIIMMOONNIICC aallllooyy 8800AA

    16

    Mean tensile stress, MPa (ksi)

    Sem

    i-ra

    nge

    of a

    ltern

    atin

    g st

    ress

    , M

    Pa

    (ksi

    )

    FFiigguurree 1199.. Fatigue test at 600C (1112F)

    100 h. 60 x 106 Cycles1000 h. 600 x 106 Cycles

    P O

    0

    P

    P

    P

    P P

    P P

    Mean tensile stress, MPa (ksi)

    FFiigguurree 2200.. Fatigue test at 700C (1292F)

    100 h. 12 x 106 Cycles

    300 h. 36 x 106 Cycles

    P O

    0

    P

    P

    P

    P 3 /8P

    P P

    P P

    1000 h. 120 x 106 Cycles

    Mean tensile stress, MPa (ksi)

    FFiigguurree 2211.. Fatigue test at 750C (1382F)

    100 h. 12 x 106 Cycles

    300 h. 36 x 106 Cycles

    P O

    0

    P

    P

    P

    P 3 /8P

    P P

    P P

    1000 h. 120 x 106 Cycles

    Mean tensile stress, MPa (ksi)

    FFiigguurree 2222.. Fatigue test at 480C (896F)

    P O

    0

    P

    P

    P

    P P

    P P

    P

    2P

    ((aa))

    ((bb))

    ((cc))

    ((aa)) Heat treated 8h/1080C (1976F)/air cooled + 16h/700C (1292F)/air cooled. 100 hours (60 x 106 cycles), KT + 1.0.

    ((bb)) Notched and heat treated 8h/1080C (1976F)/air cooled.100 hours (60 x 106 cycles), KT + 4.0.

    ((cc)) Notched and heat treated 16/700C (1292F)/air cooled.100 hours (60 x 106 cycles), KT + 4.0.

    1000(145)

    800(116)

    600(87)

    400(58)

    200(29)

    0

    500(72.5)

    400(58)

    300(43.5)

    200(29)

    100(14.5)

    0

    500(72.5)

    400(58)

    300(43.5)

    200(29)

    100(14.5)

    0

    500(72.5)

    400(58)

    300(43.5)

    200(29)

    100(14.5)

    0

    Sem

    i-ra

    nge

    of a

    ltern

    atin

    g st

    ress

    , M

    Pa

    (ksi

    )S

    emi-

    rang

    e of

    alte

    rnat

    ing

    stre

    ss,

    MP

    a (k

    si)

    Sem

    i-ra

    nge

    of a

    ltern

    atin

    g st

    ress

    , M

    Pa

    (ksi

    )

    200 400 600 800 1000(29) (58) (87) (116) (145)

    100 200 300 400 500(14.5) (29) (43.5) (58) (72.5)

    100 200 300 400 500(14.5) (29) (43.5) (58) (72.5)

    100 200 300 400 500(14.5) (29) (43.5) (58) (72.5)

  • NNIIMMOONNIICC aallllooyy 8800AA

    17

    SSttrreessss RReellaaxxaattiioonn PPrrooppeerrttiieessThe stress relaxation data in Figure 23 are for hot-rolled bar,subsequently cold stretched, given the two recommended heattreatments. Data derived from the three-stage heat treatmentshould be regarded as tentative because only a limited amount oftesting has been completed. However, a relative improvement instress relaxation properties can be seen.

    Figure 24 gives the relationship between the number of re-tightenings and re-tightening time. Tests were carried out at anallowable plastic strain of 0.4%, although NIMONIC alloy 80A,given the three-stage heat treatment, is capable of 1.0% totalplastic strain without serious deterioration in stress relaxationcharacteristics.

    Figure 25 gives the relationship between initial strain,residual stress and time. The residual stress after a given timewas greater at the higher level of initial strain, but at a decreasingadvantage with time and temperature. This must be weighedagainst future reloading because high initial stresses result infaster conversion from elastic to plastic deformation, thusexhausting more rapidly the available ductility and reducing thenumber of times that a bolt can be reloaded.

    Hours

    10 100 1000 10,000

    800(1472)

    700(1292)

    600(1112)

    500(932)

    FFiigguurree 2233.. Stress relaxation properties of NIMONIC alloy 80A.

    Hot rolled bar, heat treated 8h/1080C (1976F)/air cooled + 16h/700C (1292F)/air cooled.

    Extruded bar, cold stretched, heat treated 8h/1080C (1976F)/air cooled + 24/850C (1562F)/air cooled +16h/700C (1292F)/air cooled.

    Initial strain, 0.15%.

    80 MPa (11.6 ksi)100 MPa (14.5 ksi)

    120 MPa (17.4 ksi)140 MPa (20.3 ksi)

    160 MPa (23.2 ksi)180 MPa (26.1 ksi)200 MPa (29.0 ksi)

    220 MPa (31.9 ksi)

    260 MPa (37.7 ksi)

    240 MPa (34.8 ksi)Tem

    per

    atur

    e,

    C (

    F)

  • NNIIMMOONNIICC aallllooyy 8800AA

    18

    575C (1067F)

    Hours

    100 1000 10,000

    100

    10

    1

    FFiigguurree 2244.. Relationship between re-tightenings and re-tightening time.

    Num

    ber

    of

    re-t

    ight

    enin

    gs b

    efor

    e d

    ecre

    ase

    in r

    elax

    atio

    nre

    sist

    ance

    (0.4

    % t

    otal

    str

    ain)

    600C (1112F)

    625C (1157F)

    650C (1202F)

    (1022F)550C (1067F)

    575C (1112F)600C

    (1202F)650C

    (1157F)

    625C

    Hot rolled bar, heat treated 8h/1080C (1976F)/air cooled + 16h/700C (1292F)/air cooled.

    Extruded bar, cold stretched, heat treated 8h/1080C (1976F)/air cooled + 24h/850C(1562F)/air cooled + 16h/700C (1292F)/air cooled.

    Initial and re-tightening strain, 0.15%.Total strain, 0.4%.

    SSttrreessss RReellaaxxaattiioonn PPrrooppeerrttiieess ((ccoonnttiinnuueedd))

  • NNIIMMOONNIICC aallllooyy 8800AA

    19

    CCoorrrroossiioonn RReessiissttaannccee

    The corrosion resistance of NIMONIC alloy 80A ispresented in Table 11, and Figures 26 and 27.

    TTaabbllee 1111 - Oxidation Resistance of NIMONIC alloy 80A. Continuous Heating in Air.

    750

    900

    1000

    1100

    1200

    1382

    1652

    1832

    2012

    2192

    1.8

    3.9

    7.1

    8.0

    9.1

    1.9

    3.8

    7.4

    12.9

    1.5

    2.5

    4.2

    10.5

    18.8

    20.0

    5.3

    6.6

    16.0

    21.2

    64.5

    3300hh 110000hh

    TTeemmppeerraattuurree

    CC FF

    DDeessccaalleedd WWeeiigghhtt LLoossss ((mmgg//ccmm22) in:

    330000hh 11000000hh

    10,000 h

    Residual stress, MPa (ksi)

    350 300 250 200 150 100 50(50.8) (43.5) (36.3) (29.0) (21.8) (14.5) (7.3)

    800(1472)

    700(1292)

    600(1112)

    500(932)

    FFiigguurree 2255.. Relationship between initial strain, residual stress and time. (NIMONIC alloy 80A,heat treated 8h/1080C (1976F)/air cooled + 16h/700C (1292F)/air cooled).

    Tem

    per

    atur

    e,

    C (

    F)

    Initial Strain 0.3% Initial Strain 0.15%

    30,000 h

    3000 h

    10,000 h

    3000 h

  • NNIIMMOONNIICC aallllooyy 8800AA

    20

    CCoorrrroossiioonn RReessiissttaannccee

    1200C (2192F)

    Time, hours

    0 500 1000

    30

    20

    10

    0

    Wei

    ght

    loss

    , m

    g/cm

    2

    (2012F)1100C

    (1832F)

    1000C

    (1652F)900C

    (1382F)750C

    FFiigguurree 2266.. Isothermal oxidation resistance of NIMONIC alloy 80A.

    900C (1652F)

    Weight change, mg/cm2+10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100

    1400

    1200

    1000

    800

    600

    400

    200

    0

    Tim

    e, h

    ours

    FFiigguurree 2277.. Cyclic oxidation resistance of NIMONIC alloy 80A. (20 minutes in furnace, 10 minutes inair.)

    1000C (1832F)

    1100C (2012F)

    1250C (2282F)

  • NNIIMMOONNIICC aallllooyy 8800AA

    21

    HHeeaatt TTrreeaattmmeenntt

    The heat treatments recommended for NIMONIC alloy 80Aare as follows:For extruded bar 8h/1080C (1976F)/air cool +

    16h/700C (1292F)/air cool.

    For extruded bar, 8h/1080C (1976F)/air cool +subsequently 24h/850C (1562F)/air cool + cold stretched 16h/700C (1292F)/air cool.

    For cold rolled sheet 2-3 minutes/1150C (2102F)/fluidized bed quench + 20minutes/1040C (1904F)/air cool+4h/750C(1382F)/air cool.

    For welded sheet 2 minutes/1150C (2102F)/air cool + weld + 1h/925C (1697F)/air cool + 4h/750C (1382F)/air cool.

    For interstage 20 minutes/1040C (1904F)/airannealing of cool.sheet

    Data for sheet quoted in this publication have been obtainedfrom material given a second interstage anneal (20minutes/1040C (1904F)/air cool) which is purely asoftening treatment. Improved tensile and rupture ductilitycan be achieved by using 1 h/925C (1697F)/air cool as thesecond stage heat treatment.

    FFaabbrriiccaattiioonn

    NIMONIC alloy 80A should be hot worked in the range1050-1200C (1920-2190F). Further advice is availablefrom Special Metals Corporation.

    HHoott WWoorrkkiinnggCCoolldd WWoorrkkiinngg

    Average mechanical properties pertinent to cold formingoperations for NIMONIC alloy 80A sheet, 0.75/1.65 mm(0.03-0.06 inch) thick, annealed 2-3 minutes/1150C(2102F)/fluidized bed quenched, are as follows:0.1% proof stress 354 MPa (51.3 ksi)0.2% proof stress 374 MPa (54.2 ksi)0.5% proof stress 391 MPa (56.7 ksi)Tensile strength 802 MPa (116.3 ksi)Elongation on 50 mm (2 in.) 52.0%Hardness 211 HVMean grain size ASTM 6.0Erichsen value 12.4 mm (0.48 inch)Typical plastic anisotropy

    R value 0.89*Shear strength 553 MPa (80.2 ksi)Ratio of shear to tensile

    strength 0.69*Mean value of plastic anisotropy ratio R for tests at 0, 45,and 90 to the final rolling direction, using the formula R = (R0 + 2R45 = R90).

    AAnnnneeaalliinngg

    Interstage annealing should be carried out at 1040C(1904F), followed by water quenching or air cooling.

    MMaacchhiinniinngg

    NIMONIC alloy 80A should be in the fully heat treatedcondition for all machining operations. The high materialhardness in this condition (250-350 HV) requires the use ofstringent machining techniques. Further advice is availablefrom Special Metals Corporation.

  • NNIIMMOONNIICC aallllooyy 8800AA

    22

    FFaabbrriiccaattiioonn,, ccoonnttiinnuueedd

    WWeellddiinngg

    NIMONIC alloy 80A sheet is readily joined by any of theresistance welding processes. Fusion welding byconventional processes such as T.I.G. or M.I.G. (dip orpulsed transfer) is satisfactory for section thicknesses up toabout 5 mm (0.2 inch). Above this thickness micro-fissuringmay occur in the weld and the heat affected zone.

    Electron beam, friction, inertia and flash-butt weldinghave all been successfully used for thickness greater than 5mm (0.2 inch).

    The normal precautions for welding nickel alloysshould be observed and welding should be carried out onsolution treated material. Post-weld heat treatment isnecessary to achieve optimum properties. Further advice isavailable from Special Metals.

    High-temperature brazing in vacuum, dry hydrogen, or inertatmosphere, is satisfactory and a number of suitable brazingalloys is available.

    HHiigghh--TTeemmppeerraattuurree BBrraazziinngg

    Publication Number SMC-099Copyright Special Metals Corporation, 2004 (Sept 04)

    NIMONIC is a trademark of the Special MetalsCorporation group of companies.

    The data contained in this publication is for informational purposes only and may berevised at any time without prior notice. The data is believed to be accurate andreliable, but Special Metals makes no representation or warranty of any kind (expressor implied) and assumes no liability with respect to the accuracy or completeness ofthe information contained herein. Although the data is believed to be representative ofthe product, the actual characteristics or performance of the product may vary fromwhat is shown in this publication. Nothing contained in this publication should beconstrued as guaranteeing the product for a particular use or application.

    AAvvaaiillaabbllee PPrroodduuccttss aannddSSppeecciiffiiccaattiioonnss

    NIMONIC alloy 80A is designated as UNS N07080 andWerkstoff Numbers 2.4952 and 2.4631. The alloy isavailable as sheet, round bar, flat bar, forging stock,hexagon, wire, plate and extruded section.

    Specifications and designations include:

    Rod, Bar, Wire and Forging Stock - BS 3076 & HR 1;ASTM B 637; AECMA PrEn 2188, 2189, 2190, 2396, 2397;AIR 9165-37

    Plate, Sheet and Strip - BS HR 201, AECMA PrEn 2191

    Pipe and Tube - BS HR 401

    Other - BS HR 601, DIN 17742, AFNOR NC 20TA

  • 23

    TThhee SSppeecciiaall MMeettaallss CCoorrppoorraattiioonnttrraaddeemmaarrkkss iinncclluuddee::

    BRIGHTRAY

    CORRONEL

    DEPOLARIZED

    DURANICKEL

    FERRY

    INCOBAR

    INCOCLAD

    INCO-CORED

    INCOFLUX

    INCOLOY

    INCONEL

    INCOTEST

    INCOTHERM

    INCO-WELD

    KOTHERM

    MONEL

    NILO

    NILOMAG

    NIMONIC

    NIOTHERM

    NI-ROD

    NI-SPAN-C

    RESISTOHM

    UDIMAR

    UDIMET

    601GC

    625LCF

    718SPF

    725NDUR

    800HT

    956HT

  • wwwwww..ssppeecciiaallmmeettaallss..ccoomm

    France

    Special Metals Services SA17 Rue des Frres Lumire69680 Chassieu (Lyon)Phone +33 (0) 4 72 47 46 46Fax +33 (0) 4 72 47 46 59

    Germany

    Special Metals Deutschland Ltd.Postfach 20 04 0940102 DsseldorfPhone +49 (0) 211 38 63 40Fax +49 (0) 211 37 98 64

    Hong Kong

    Special Metals Pacific Pte. Ltd.Unit A, 17th Floor, On Hing Bldg1 On Hing TerraceCentral, Hong KongPhone +852 2439 9336Fax +852 2530 4511

    India

    Special Metals Services Ltd.No. 60, First Main Road, FirstBlockVasantha Vallabha NagarSubramanyapura PostBangalore 560 061Phone +91 (0) 80 2666 9159Fax +91 (0) 80 2666 8918

    Italy

    Special Metals Services SpAVia Assunta 5920054 Nova Milanese (MI)Phone +390 362 4941Fax +390 362 494224

    The Netherlands

    Special Metals Service BVPostbus 86813009 AR RotterdamPhone +31 (0) 10 451 44 55Fax +31 (0) 10 450 05 39

    Singapore

    Special Metals Pacific Pte. Ltd.24 Raffles Place #27-04 Clifford CentreSingapore 048621Phone +65 6532 3823Fax +65 6532 3621

    Affiliated Companies

    Special Metals WeldingProducts1401 Burris RoadNewton, NC 28658, U.S.A.Phone +1 (828) 465-0352

    +1 (800) 624-3411Fax +1 (828) 464-8993

    Canada HouseBidavon Industrial EstateWaterloo RoadBidford-On-AvonWarwickshire B50 4JN, U.K.Phone +44 (0) 1789 491780Fax +44 (0) 1789 491781

    Controlled Products Group590 Seaman Street, Stoney CreekOntario L8E 4H1, CanadaPhone +1 (905) 643-6555Fax +1 (905) 643-6614

    A-1 Wire Tech, Inc.A Special Metals Company4550 Kishwaukee StreetRockford, IL 61109, U.S.A.Phone +1 (815) 226-0477

    +1 (800) 426-6380Fax +1 (815) 226-0537

    Rescal SAA Special Metals Company200 Rue de la Couronne des Prs78681 Epne Cdex, FrancePhone +33 (0) 1 30 90 04 00Fax +33 (0) 1 30 90 02 11

    DAIDO-SPECIAL METALSLtd.A Joint Venture CompanyDaido Shinagawa Building6-35, Kohnan 1-chomeMinato-ku, Tokyo 108-0057, JapanPhone +81 (0) 3 5495 7237Fax +81 (0) 3 5495 1853

    U.S.A.Special Metals Corporation

    Billet, rod & bar, flat & tubular products3200 Riverside DriveHuntington, WV 25705-1771Phone +1 (304) 526-5100

    +1 (800) 334-4626Fax +1 (304) 526-5643

    Billet & bar products4317 Middle Settlement RoadNew Hartford, NY 13413-5392Phone +1 (315) 798-2900

    +1 (800) 334-8351Fax +1 (315)798-2016

    Atomized powder products100 Industry LanePrinceton, KY 42445Phone +1 (270) 365-9551Fax +1 (270) 365-5910

    Shape Memory Alloys4317 Middle Settlement RoadNew Hartford, NY 13413-5392Phone +1 (315) 798-2939Fax +1 (315) 798-6860

    United Kingdom

    Special Metals Wiggin Ltd.Holmer RoadHereford HR4 9SLPhone +44 (0) 1432 382200Fax +44 (0) 1432 264030

    Special Metals Wire ProductsHolmer RoadHereford HR4 9SLPhone +44 (0) 1432 382556Fax +44 (0) 1432 352984

    China

    Special Metals Pacific Pte. Ltd.Room 1802, Plaza 661266 West Nanjing RoadShanghai 200040Phone +86 21 3229 0011Fax +86 21 6288 1811

    Special Metals Pacific Pte. Ltd.Room 910, Ke Lun Mansion12A Guanghua RoadChaoyang DistrictBeijing 100020Phone +86 10 6581 8396Fax +86 10 6581 8381