Design Materials

What you see - What you get

Design materials

• Function is supreme – Perform to requirements

– Durability – life span

– Product life cycle

Material Properties

• Physical

• Mechanical

• Chemical

• Acoustical

• Optical

• Thermal

Physical Properties

• Characteristics free from external influence– Melting point

– Density

– Moisture content

– Porosity

– Texture

– Phase

– Hardness

– Odor

Mechanical Properties

• Tensile• Compression• Torsion• Shear• Plasticity• Yield• Hardness• Ductility

Chemical Properties

Corrosion Resistance

Acid/Alkali resistance

UV tolerance

Human poison

Acoustical

• Sound attenuation• Reflection

Acoustical

Architectural considerations

Thermal

• Effects of Temperature• Insulation• Conductivity

Optical

Reactions to light

Color

Transparency

Tones

Shades

Metals

• Ferrous • Nonferrous

Steel

Iron and Carbon

Wrought

Stainless

Copper Alloys

• Copper• Bronze• Brass

Aluminum

The Rest

• Zinc• Magnesium• Titanium• Monel• Refractory

– Molybdenum

– Tantalum

– Tungsten

Plastics

Coal, Tar, Petroleum, Milk, Wood, Soy

Plastics

• Thermosetting• Thermoplastic

Woods

Basic Types

• Hardwood– Stronger– Bold grain patterns– Toughness

• Softwood– Easy to machine– Less expensive– Provide contrast– Manmade products

Ceramics

• Non metallic• Inorganic

• High temperatures to manufacture

• Plastic before firing

Good tensile strength

High compressive strength

Chemically resistant

High dielectric properties