Stainless Steel 430/431
Stainless Steel 430/431 are martensitic, heat-treatable grades with excellent corrosion resistance, torque strength, high toughness, and tensile properties. All these properties make them ideal for bolt and shaft applications. These steels, however, cannot be cold-worked owing to their high yield strength, hence they are suitable for operations such as spinning, deep drawing, bending, or cold heading.
Application Industries
These materials are not a single material but the name for a family of corrosion resistant steels. Like many scientific breakthroughs, the origins of stainless steel lies in a lucky accident. From the smallest part of the zipper to the largest building skyscraper.
Metal fabrication is widely used across various industrial sectors such as mining, construction, manufacturing, shipbuilding, automotive, aerospace, and energy.
Chemical Composition
Grade | C | Mn | Si | P | S | Cr |
SS 430 | 0.12 | 1.25 | 1.00 | 0.06 | 0.15 | 18.0-16.0 |
SS 431 | 0.02 max | 1.00 max | 1.00 max | 0.040 max | 0.030 max | 17.00-15.00 |
Equivalent Grade
Grade | C | Mn | Si | P | S | Cr |
SS 430 | 0.12 | 1.25 | 1.00 | 0.06 | 0.15 | 18.0-16.0 |
SS 431 | 0.02 max | 1.00 max | 1.00 max | 0.040 max | 0.030 max | 17.00-15.00 |