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Engineering Materials

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

Stiffness
Plasticity
Ductility
Resilience

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Engineering Materials
Solder is an alloy consisting of

Tin and lead
Tin, antimony, copper
Lead and zinc
Tin and copper

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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

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

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Engineering Materials
Steel containing ferrite and pearlite is

Hard and tough
Tough
Hard
Soft

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Engineering Materials
Monel metal contains

Alloy of tin, lead and cadmium
Malleable iron and zinc
63 to 67% nickel and 30% copper
88% copper and 10% tin and rest zinc

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Engineering Materials
Gun metal contains

70 - 78% copper and rest tin
90% copper and 10% tin
70% copper and 30% zinc
85 - 92% copper and rest tin with little lead and nickel

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