Unit 6.Technical materials

MATERIALS PROPERTIES

1.       Sensory:

·         Transparency

·         Translucency

·         Opaqueness

·         Uneveness

·         Roughness

·         Smoothness

2.       Mechanical:

·         Hardness

·         Toughness

·         Strength

·         Deformability

·         Ductility

·         Malleability

3.       Physical:

·         Conductivity (electrical, thermal and sound conductivity)

·         Thermal expansion

4.       Chemical:

·         Resistence to rusting

5.       Environmental:

·         Toxicity

·         Recyclability

·         Biodegradability

MATERIALS TYPES

WOOD:

Natural wood
plywood
chipboard

METALS:

Ferrous:
Iron
Steel
Cast iron

Non ferrous:
Zinc
Copper
Aluminium
Tin

Alloys
 Bronze: Tin+Copper
 Brass: Copper+Zinc
 Tinplate