Engineering Materials
Free cutting steels

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

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Engineering Materials
Specify the sequence correctly

Stress relief, grain growth, recrystallization
Stress relief, recrystallization, grain growth
Grain growth, stress relief, recrystallization
Grain growth, recrystallization, stress relief

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Engineering Materials
The charge of the blast furnace consists of

Calcined ore, coke and limestone all in equal parts
Calcined ore (4 parts), coke (1 part) and limestone (8 parts)
Calcined ore (1 part), coke (8 parts) and limestone (4 parts)
Calcined ore (8 parts), coke (4 parts) and limestone (1 part)

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