JIS G4304 / G4312 SUS 430 Stainless Steel Composition & Ferritic Corrosion‑Resistant Properties

SUS 430 is a typical ferritic stainless steel defined in JIS G4304 / G4312. Containing 16–18% chromium and no nickel, it is an economical corrosion‑resistant alloy suitable for atmospheric and mildly corrosive environments. It offers good formability, polishability, and oxidation resistance, making it widely used in kitchen equipment, appliance panels, automotive trim, architectural decoration, and lightweight mechanical structures. SUS 430 is supplied as cold‑rolled sheets, hot‑rolled plates, strips, and thin plates. It is a cost‑efficient stainless steel for household appliances, food equipment, construction, and general manufacturing.