What is steel made of?
iron and coal
iron and titanium
iron and quartz
iron and magnesium
Carbon steel, composed simply of iron and carbon, accounts for 90% of steel production. Low alloy steel is alloyed with other elements, usually molybdenum, manganese, chromium, or nickel, in amounts of up to 10% by weight to improve the hardenability of thick sections.
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Answers by country
iron and coal
iron and titanium
iron and quartz
iron and magnesium
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