ISME Exam 1

Both steel and iron are carbon-alloys

• True

• False

The carbon contain in T10 tool steel is about ____.

• 10%

• 1%

• .1%

Both brass and bronze contain copper.

• True

• False

Atoms in most metals have a ____ structure.

• molecular

• crystalline

• amorphous

Generally speaking, which structure has a better ductility (ability to deform with fracture)?

• FCC

• BCC

• SC

• Equal

Generally speaking, metals have _____________ thermal conductivity than plastics.

• higher

• lower

On Boeing 787 airplanes, which type of material is used the most?

• Metals

• Composites

• Plastics

• Cermanics

What materials are used to mint the 25-cent coins now?

• Ag

• Cu + Ag

• Cu + Ni

• Ag + Ni

Density is one of material's ___________

• Physical Properties

• Mechanicals properties

If we let the young’s modulus of AISI 4140 steel be 1, which value will most likely be the young’s modulus of plastics?

• .1

• 1

• 10