Engineering Materials
Carbon steel is

Made by adding carbon in steel
Extensively used for making cutting tools
An alloy of iron and carbon with varying quantities of phosphorus and sulphur
Refined from cast iron

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

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