Complete knowledge of steel (long content, recommended to keep)
2019-11-03
Before introducing the classification of steel, briefly introduce the basic concepts of ferrous metals, steel and nonferrous metals. 1. Ferrous metals are iron and iron alloys. Such as steel, pig iron, ferroalloy, cast iron, etc. Steel and pig iron are alloys based on iron, with carbon as the main addition element, collectively referred to as iron carbon alloy. Pig iron is produced by smelting iron ore in the blast furnace
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