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Engineering Materials

Engineering Materials
In high speed steels, manganese is used to tougher the metal and to increase its

Critical temperature
Hardness
Yield point
Melting point

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Engineering Materials
Which of the following statements are true for annealing of steels?

Cooling is done slowly and steadily
Steels are heated to 500 to 700°C
All of these
Internal stresses are relieved

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Engineering Materials
The toughness of a material __________ when it is heated.

Decreases
Remain same
Increases
None of these

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Engineering Materials
Depth of hardness of steel is increased by addition of

Tungsten
Chromium
Nickel
Vanadium

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Engineering Materials
Blast furnace is used to produce

Pig iron
Steel
Cast iron
Wrought iron

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Engineering Materials
Maximum percentage of carbon in austenite is

0.0026
0.017
0.00025
0.008

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