Mechanical Properties

Question 1

Define hardness

Answer 1

Resist deformation (denting/abrasion) when hit/scratched

Question 2

Give an example of something very hard

Answer 2

Ceramics

Question 3

Define resilience

Answer 3

(opposite of brittleness)

Resists shock and impact without breaking

Question 4

Give an example of something very resilient

Answer 4

Rubber

Question 5

Define malleability

Answer 5

The ability to be shaped (flattened or bent) WITHOUT breaking

Question 6

Give an example of something malleable

Answer 6

Plastic

Question 7

Define ductility

Answer 7

Ability to be pulled into a wire OR stretched (using tension) WITHOUT breaking

Question 8

Define stiffness/rigidity

Answer 8

Ability to maintain shape when subjected to various constraints (against deflection)

Question 9

Define corrosion resistance

Answer 9

Resists smoke, salt, and chemical products, oxidation, water, etc.

Question 10

What are the properties for manufacturing?

Answer 10

• Malleability

- Ductility