AISI 431 has highest corrosion resistance in 400 series martensitic stainless steel though not as high as Austenitic steel. It offers highest corrosion resistance in Hardened & Tempered condition. Passivation is recommended for finished products to retain the corrosive resistance.
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Pumps & Shafts Aircraft Components General Industrial parts Fasteners - Bolts, Nuts etc Valve & Chemical container components Marine components.
| Internal Standard | BS | DIN | IS | EN | AISI/SAE |
| AISI 431 | 431S29 | - | - | 57 | AISI 431 |
| C | MN | SI | S | P | Cr | Ni | Mo | V | B |
| 0.20 Max | 1.00 Max. | 1.00 Max. | .030 Max | .040 Max | 15.0-17.0 | 1.25-2.50 | - | - | - |
380-410 BHN
Spread over 2 verticals, the group produces economical and class-leading mild, alloy and carbon steel, hex, round, square, wire rods, ingots and billets with the most modern integrated steel manufacturing facility.
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