AISI 420F
Stainless steels are high-alloy steels that have good corrosion resistance in comparison with other steels because they contain more chromium. According to their crystalline structure, stainless steels are divided into martensitic, austenitic and ferritic steels. A combination of martensitic and ferritic steels forms a fourth group known as precipitation-hardened steels.
Grade 420F stainless steel is a general purpose free machining version of 420 stainless. It is a heat treatable chromium steel. The following datasheet provides more details of grade 420F stainless steel.
| Element | Content(%) |
|---|---|
| Iron, Fe | 84 |
| Chromium, Cr | 13 |
| Manganese, Mn | 1.0 |
| Silicon, Si | 1.0 |
| Molybdenum, Mo | 0.60 |
| Carbon, C | 0.15 |
| Sulfur, S | 0.15 |
| Phosphorous, P | 0.040 |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 655 MPa | 95000 psi |
| Yield strength (@strain 0.200%) | 380 MPa | 55100 psi |
| Elastic modulus | 190-210 GPa | 27557– 30458 ksi |
| Poisson's ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 22% | 22% |
| Hardness, Brinell | 220 | 220 |
| Hardness, Rockwell C (converted from Brinell hardness, value below normal Rockwell C hardness range, for comparison only) | 18 | 18 |
Sheets / Plates
| Production Route | Hot Rolled, Cold Rolled |
| Material Standard | AISI, ASTM, ASME, DIN, BS, EN, ISO, JIS, GOST, SAE, IS & Custom Chemistry |
| Size | Width from 100mm to 3000mm ; Length from 500mm to 12000mm |
| Thickness | 0.1mm to 400mm |
| Delivery Condition | As Rolled, Annealed, Quenched and Tempered, Normalized |
| Surface Finish | Plain, Brushed, Cladded |