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309S is a free cutting stainless steel with sulfur, used in applications where free cutting and high surface smoothness are the main requirements.The corresponding Chinese grade of 309S is 0Cr23Ni13, and the characteristics and uses of American Standard S30908 (American AISI, ASTM): corrosion resistance and heat resistance are better than 0Cr19Ni9.
1. High temperature resistance: 309S stainless steel has good high temperature resistance and can be used for a long time at temperatures up to 1000°C. It is suitable for industrial equipment and stoves in high temperature environments.2. Corrosion resistance: 309S stainless steel has good corrosion resistance in common corrosive media such as acids, alkalis, and salts, especially against strong acids such as sulfuric acid and nitric acid.3. Anti-oxidation performance: 309S stainless steel contains high chromium and nickel elements, which can form a dense chromium oxide layer, effectively preventing the metal surface from being oxidized and extending its service life.4. Processing performance: 309S stainless steel has good plasticity and weldability, and can be formed and processed through cold working, hot working, etc.5. Strength and hardness: 309S stainless steel has high strength and hardness, and can provide better mechanical properties and wear resistance in some special environments.| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 309S | Min. | ≤0.08 | ≤2.0 | ≤1.00 | ≤0.045 | ≤0.03 | 22.0-24.0 | - | 12.0-15.0 | - |
| Max. | ||||||||||
| Grade | Yield Strength (MPa) | Ultimate Tensile Strength (MPa) | Elongation at Break (%) |
| 309S | 205 | 515 | ≥40 |
| Thickness | 4mm-100mm | ||||||
| Width | 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc | ||||||
| Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc | ||||||
| Surface | 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sand blast, Brush, etching, etc | ||||||
| Finish | Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) | ||||||
| Form | Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) etc. | ||||||
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