Engineering Materials
Thermoplastic materials are those materials which

Are used as a friction lining for clutches and brakes
Are formed into shape under heat and pressure and results in a permanently hard product
Are flexible and can withstand considerable wear under suitable conditions
Do not become hard with the application of heat and pressure and no chemical change occurs

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Engineering Materials
The charge of the blast furnace consists of

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

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