Understanding Material Properties (Quick Review)

Which property is important if a material needs to be resistant to spreading of a crack?

• Hardness

• Fracture toughness

• Electrical resistivity

• Density

Which property relates the type of material to the weight of the final part?

• Yield strength

• Young's modulus of elasticity

• Density

• Hardness

A material needs a high ___________ to resist permanent deformation under load.

• ductility

• toughness

• hardness

• yield strength

What property predicts how much a material will change size or shape during heating and cooling?

• Coefficient of thermal expansion

• Melting point

• Specific heat

• Thermal conductivity

What does high thermal conductivity indicate?

• The material melts at a high temperature

• The material allows heat to flow through easily

• The material expands a great deal when heated

• The material absorbs and holds a lot of heat

Ceramic materials are brittle, meaning they have low ________________.

• melting point

• hardness

• tensile strength

• ductility

Which property indicates that a material has the strength to resist twisting?

• Fracture toughness

• Shear modulus

• Electrical resistivity

• Hardness

A material with high electrical resistivity is a good _____________.

• conductor

• insulator

• conductor AND insulator

To resist surface denting and scratching, choose a material with high _______________.

• ductility

• density

• melting point

• hardness

A material that breaks easily under a pulling force has a low ____________________.

• ultimate tensile strength

• shear modulus

• coefficient of thermal expansion

• electrical resistivity