29203-15 Physical and Mechanical Properties of Metals

Steel begins to develop brittle properties when the amount of carbon added is more than 1.4%.

• True

• False

In the American Iron and Steel Institute classification system for carbon steels, the manufacturing process is indicated with a _____.

• hashtag

• three digit number

• two digit number

• letter prefix

What makes plain-carbon steels and High Strength Low-Alloy steels different is _____.

• magnetic properties

• weldability

• the addition of alloys

• porosity resistance

_____ is commonly manufactured using a quench-and-temper process.

• Channel

• Plate

• Steel bar

• Sheet metal

A common grade of non-magnetic stainless steel is known as _____.

• superferritic

• duplex

• austenitic

• martensitic

A type of stainless steel designed for a good weight-to-strength ratio, used in jet aircraft manufacturing is _____.

• superaustenitic stainless steel

• superferritic stainless steel

• duplex stainless steel

• precipitation-hardening stainless steel

Precious Metals like platinum, gold and silver are often used to make electrical contacts, electrodes, and similar industrial components.

• True

• False

Specific gravity is the weight of a metal compared to the weight of _____.

• one square foot of dry sand

• one square foot of water

• an equal volume of dry earth

• an equal volume of water

Stress is a force that causes metal to _____.

• deform

• increase in size

• increase in electrical conductivity

The maximum tensile stress a material can withstand without permanently breaking is known as its _____.

• ductility

• hardness

• shear force

• yield strength