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Engineering Materials

Engineering Materials
Silicon when added to copper improves

Hardness and strength
Hardness
Machinability
Strength and ductility

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Engineering Materials
Compressive strength of grey cast iron in tonnes/cm is of the order of

710
1015
57
35

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Engineering Materials
Free cutting steels

Contain carbon in free from
Is used where rapid machining is the prime requirement
Require minimum cutting force
Can be cut freely

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Engineering Materials
The property of a material essential for spring materials is

Plasticity
Stiffness
Resilience
Ductility

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Engineering Materials
Mild steel belongs to the following category

High carbon steel
Medium carbon steel
Low carbon steel
Alloy steel

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Engineering Materials
The aluminium alloy, mainly used, for anodized utensil manufacture, is

Magnalium
Duralumin
Y-alloy
Hindalium

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