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Engineering Materials

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

2.1180555555556
2.5277777777778
40 : 60
0.47916666666667

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Engineering Materials
Hardness of martensite is about

RC 80
RC 65
RC 48
RC 57

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Engineering Materials
Delta-iron occurs between the temperature ranges of

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

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Engineering Materials
Iron-carbon alloys containing 1.7 to 4.3% carbon are known as

Hypoeutectic cast irons
Eutectic cast irons
None of these
Hypereutectic cast irons

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Engineering Materials
By severely deforming a metal in a particular direction it becomes

Ductile
Homogeneous
Malleable
Anisotropic

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

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

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