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Engineering Materials

Engineering Materials
The property of a material which enables it to retain the deformation permanently, is called

Brittleness
Plasticity
Malleability
Ductility

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Engineering Materials
The lower critical point for all steels is

913°C
723°C
600°C
700°C

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Engineering Materials
Quenching is not necessary when hardening is done by

Nitriding
Case hardening
Any one of these
Flame hardening

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Engineering Materials
The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is

Below recrystallization temperature
1050°C
910°C
770°C

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Engineering Materials
Gamma iron exits at following temperature

Between 1400°C and 1539°C
Room temperature
Near melting point
Between 910°C and 1400°C

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Engineering Materials
Shock resisting steels should have

Low hardness
Low tensile strength
Toughness
Low wear resistance

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