Exercise: Engineering Materials

Questions for: Engineering Materials

The presence of hydrogen in steel causes
A:
reduced neutron absorption cross-section
B:
improved weldability
C:
embrittlement
D:
corrosion resistance
Answer: C
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Free cutting steels
A:
contain carbon in free from
B:
require minimum cutting force
C:
is used where rapid machining is the prime requirement
D:
can be cut freely
Answer: C
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A steel with carbon __________ is known as hypo-eutectoid steel.
A:
0.8%
B:
below 0.8%
C:
above 0.8%
D:
Answer: B
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Which of the following is added in low carbon steels to prevent them from becoming porous?
A:
Sulphur
B:
Phosphorus
C:
Manganese
D:
Silicon
Answer: D
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Chromium when added to steel __________ the tensile strength.
A:
does not effect
B:
decreases
C:
increases
D:
Answer: C
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