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Engineering Materials

Engineering Materials
Hardness of lower bainite (tempered martensite) is about

RC 80
RC 48
RC 57
RC 65

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Engineering Materials
Which of the following constituents of steels is softest and least strong?

Ferrite
Cementite
Pearlite
Austenite

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Engineering Materials
The lower critical point for all steels is

700°C
913°C
600°C
723°C

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Engineering Materials
Cartridge brass can be

Formed into tube
Cold rolled into sheets
Drawn into wires
Any one of these

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Engineering Materials
Cast iron is characterized by minimum of following percentage of carbon

0.008
0.013
0.02
0.002

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Engineering Materials
Gamma-iron occurs between the temperature ranges of

400°C to 600°C
1400°C to 1530°C
600°C to 900°C
900°C to 1400°C

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