Guide – Practice Questions
with Verified Answers. GRADED
A+. Latest 2026/2027 Update
Hardness - Answer✔✔-Ability to resist abrasions, penetrations, and distortion
Brittleness - Answer✔✔-Allows very little bending or shaping without
shattering
Malleability - Answer✔✔-the ability to be bent, flattened, or hammered
without breaking
Ductility - Answer✔✔-Ability to be bent permanently or twisted into various
shapes without breaking.
Elasticity - Answer✔✔-Ability to return to its original shape.
Toughness - Answer✔✔-Ability to withstand tearing or shearing
Density - Answer✔✔-Actual weight of material per cubic inch
,Fusibility - Answer✔✔-Ability to become a liquid when heated
Conductivity - Answer✔✔-Ability to carry heat or electricity
Contraction - Answer✔✔-Ability to shrink
Expansion - Answer✔✔-Ability to grow large
Tensile - Answer✔✔-Resists to being pulled apart
Compression - Answer✔✔-Resists to being crushed
Shear - Answer✔✔-Resists to being cut
Torsial - Answer✔✔-Resists to a twisting force
strength-to-weight ratio - Answer✔✔-relationship between the strength of a
material and its weight per cubic inch
corrosion resistance - Answer✔✔-Resists deterioration
Ferrous metal - Answer✔✔-A group of metals having iron as their principal
element.
, Society of Automotive Engineers (SAE) first number represents - Answer✔✔-
Type of steel
Society of Automotive Engineers (SAE) second number represents -
Answer✔✔-Percentage of alloying elements
Society of Automotive Engineers (SAE) third and fourth number represents -
Answer✔✔-The percentage of carbon in hundredths of one percent
nonferrous metals - Answer✔✔-All metals that have elements other than iron
as their principal element
Clad Coating - Answer✔✔-Thin layer of pure aluminum that protects the base
metal from corrosion
aluminum advantages - Answer✔✔-light, easy to form
aluminum disadvantages - Answer✔✔-Lacks strength in its pure state
Aluminum Alloys advantages - Answer✔✔-Light, increases strength with added
elements
Aluminum alloy disadvantages - Answer✔✔-Not easy to form with added
elements
Titanium advantages - Answer✔✔-Good corrosion resistance, moderate
strength, light weight, up to 800 f