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The specific type of steel best known for its hardness, strength, and toughness is ____________________ steel.

Correct Answer

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Increasing the amount of chromium in steel increases its tensile strength and hardness.

A) True
B) False

Correct Answer

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False

Over 90 percent of all steel produced is ____________________ steel.

Correct Answer

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Epoxy is classified as a thermoplastic.

A) True
B) False

Correct Answer

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When heat is applied or when a catalyst is added to _________________________ plastics undergo an irreversible chemical change.

Correct Answer

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The acronym SAE stands for ____________________________________.

Correct Answer

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Society of...

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Which acts as a toughener when added to steel?


A) cadmium
B) nickel
C) sodium
D) brass

E) A) and B)
F) None of the above

Correct Answer

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B

The brittleness in hot steel is accountable to a surplus of ____.


A) sulphur
B) graphite
C) machining oil
D) oxygen

E) B) and D)
F) All of the above

Correct Answer

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The acronym AISI stands for ____.


A) American Institute for Steel and Iron
B) American Iron Standards Institute
C) American Institute for Standards in Iron
D) American Iron and Steel Institute

E) A) and B)
F) All of the above

Correct Answer

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D

Plastics are classified as either thermosetting or _________________________.

Correct Answer

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Molybdenum increases ____.


A) flexibility
B) hardness
C) melting temperature
D) hardenability

E) C) and D)
F) B) and D)

Correct Answer

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Chromium vanadium steels are best known for hardness and strength.

A) True
B) False

Correct Answer

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When copper is added to steel, it increases atmospheric corrosion resistance.

A) True
B) False

Correct Answer

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Thermoplastics soften or liquefy and flow when heat is applied.

A) True
B) False

Correct Answer

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In a steel specification AISI 4460, the 44 stands for ____.


A) alloy series
B) carbon content
C) material thickness in millimeters
D) principal properties of the steel

E) A) and B)
F) A) and C)

Correct Answer

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Showing 1 - 15 of 15

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