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Engineering Materials

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

0.002
0.008
0.01
0.005

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Engineering Materials
The surface hardness of the following order is achieved by nitriding operation

250 VPN
1000 to 1100 VPN
1500 VPN
600 VPN

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Engineering Materials
Dislocations in materials refer to the following type of defect

Point defect
Volumetric defect
Line defect
Plane defect

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Engineering Materials
Age-hardening is related with

German silver
Duralumin
Gun metal
Stainless steel

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Engineering Materials
In full annealing, the hypo eutectoid steel is heated from 30°C to 50°C above the upper critical temperature and then cooled

Any one of these
Suddenly in a suitable cooling medium
Slowly in the furnace
In still air

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Engineering Materials
Pearlite consists of

13% cementite and 87% ferrite
6.67% carbon and 93.33% iron
13% ferrite and 87% cementite
13% carbon and 87% ferrite

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