Properties of Engineering Materials

Strength of a material is :

• Its resistance to extension

• Its resistance to stress

• Its resistance to strain

• Its resistance to deformation

A material that can be permanently stretched and drawn into rods or wires is called:

• Malleable

• Elastic

• Ductile

• Tough

A metal's ability to resist scratching, abrasion, indentation or penetration is called:

• Hardness

• tensile strength

• Compressive strength

• plasticity

A tensile force was applied to an object causing it to stretch. Once the force was removed the object returned to its original size. The object is therefore:

• Plastic

• Brittle

• Elastic

• malleable

A brittle metal will:

• compress easily

• break suddenly

• stretch and eventually break

• bend easily

Aluminum is:

• Very hard

• Very malleable

• Very tough

• Very elastic

Once a material can be flattened into thin sheets it is deemed:

• Malleable

• Ductile

• Hard

• Brittle

Plastic deformation is permanent.

• True

• False

Cast iron is brittle:

• True

• False

Ferrous metals are metals that:

• Contain carbon

• Do not contain carbon

• Contain iron

• Do not contain iron