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Engineering Materials

Engineering Materials
The percentage of carbon in grey iron castings usually varies between

2.5 to 4.5%
0.5 to 1%
0.012
5 to 7%

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Engineering Materials
Cartridge brass can be

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

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Engineering Materials
Heavy duty leaf and coil springs contain carbon of the following order

0.01
0.008
0.005
0.002

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Engineering Materials
Quenching is not necessary when hardening is done by

Any one of these
Flame hardening
Case hardening
Nitriding

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Engineering Materials
For the allotropic forms of iron, the points of arrest are

The points of discontinuity
The points where no further change occurs
Constant for all metals
The points where there is no further flow of metal

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Engineering Materials
Aluminium bronze contains aluminium and copper in the ratio of

0.47916666666667
2.5277777777778
40 : 60
2.1180555555556

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