TM 506: Lesson 2 - Properties of Materials

Properties that a material exhibits upon the application of forces.

• Manufacturing Properties

• Toughness

• Mechanical Properties

• Strength

Property of a material which opposes deformation in the presence of external forces

• Strength

• Malleability

• Resilience

• Creep

It is defined as mass per unit volume

• Specific Heat

• Pressure

• Elasticity

• Density

The temperature at which the substance changes from liquid state to gaseous state

• Melting point

• Boiling point

• Sublimation

• Evaporation

Property of material that allows the flow of electric current

• Resistivity

• Fluidity

• Conductivity

• Thermal Expansion

Ceramics are typically:

• Brittle, do not allow much deformation prior to breaking

• Soft, can be easily scratched

• Ductile, allow plastic deformation before breaking

• Very conductive of electric current

Which of the following statements is NOT a property of ferrous metals?

• Susceptible to corrosion when exposed to open air and moisture.

• Economically practical and costs less compared with other types of metals.

• High versatility and structural strength.

• Non-magnetic. Do not react with magnets.

Carbon is the most important iron metal additive; the main role of carbon to ferrous metals is:

• Increases ductility and machinability

• Increases weldability

• Increases hardness and strength

• Increases density

Are metals made by combining two or more metallic elements, to give greater strength, resistance to corrosion, etc.

• Isotopes

• Alloys

• Ore

• Smelting

The following are the general properties of polymers EXCEPT:

• Less dense as compared with metals and ceramics.

• Non-magnetic and low conductivity.

• Brittle, do not allow deformation.

• Not stiff, nor strong