PHN LOI THP KHNG G

C bn loi thp khng g chnh: Austenitic, Ferritic,Austenitic-Ferritic (Duplex), v Martensitic.

Austenitic l loi thp khng g thng dng nht. Thuc dng ny c th k ra cc mc thp SUS

301, 304, 304L, 316, 316L, 321, 310s Loi ny c cha ti thiu 7% ni ken, 16% crm, carbon

(C) 0.08% max. Thnh phn nh vy to ra cho loi thp ny c kh nng chu n mn cao trong

phm vi nhit kh rng, khng b nhim t, mm do, d un, d hn. Loai thp ny c s

dng nhiu lm gia dng, bnh cha, ng cng nghip, tu thuyn cng nghip, v ngoi

kin trc, cc cng trnh xy dng khc

Ferritic l loi thp khng g c tnh cht c l tng t thp mm, nhng c kh nng chu n

mn cao hn thp mm (thp carbonthp). Thuc dng ny c th k ra cc mc thp SUS 430,

410, 409... Loi ny c cha khong 12% - 17% crm. Loi ny, vi 12%Cr thng c ng

dng nhiu trong kin trc. Loi c cha khong 17%Cr c s dng lm gia dng, ni

hi, my git, cc kin trc trong nh...

Austenitic-Ferritic (Duplex) y l loi thp c tnh cht gia loi Ferritic v Austenitic c tn

gi chung l DUPLEX. Thuc dng ny c th k ra LDX 2101, SAF 2304, 2205, 253MA. Loi

thp duplex c cha thnh phn Ni t hn nhiu so vi loi Austenitic. DUPLEX c c tnh tiu

biu l bn chu lc cao v mm do c s dng nhiu trong ngnh cng nghip ho

du, sn xut giy, bt giy, ch to tu bin... Trong tnh hnh gi thp khng g leo thang do ni

ken khan him th dng DUPLEX ang ngy cng c ng dng nhiu hn thay th cho mt

s mc thp thuc dng thp Austenitic nh SUS 304, 304L, 316, 316L, 310s

Martensitic Loi ny cha khong 11% n 13% Cr, c bn chu lc v cng tt, chu n

mn mc tng i. c s dng nhiu ch to cnh tuabin, li dao...

SUMMARY

SUS 430: nhim t, d b tc ng ca mi trng lm hoen

SUS 202: nhim t, d b tc ng ca mi trng lm hoen

SUS 201: khng nhim t (99%), bn vi thi gian, song trnh tip xc trc tip vi axit hoc

mui

SUS 304: khng nhim t, c th dng trong mi mi trng, sng bng, m bo an ton thc

phm

SUS 316: khng nhim t, c th dng trong mi mi trng, k c nhng mi trng i hi

sch rt kht khe.