The main components of 304 stainless steel are iron (70% -80%), chromium (18% -20%), and nickel (8% -10.5%). Other trace elements include carbon ≤ 0.08%, silicon ≤ 1%, manganese ≤ 2%, phosphorus ≤ 0.045%, and sulfur ≤ 0.03%.
Chromium forms an oxide film to enhance corrosion resistance, while nickel stabilizes the austenite structure to improve toughness. This ingredient makes stainless steel 304 widely used in the fields of food, medicine, and construction.
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