Chemical Composition of Stainless Steel
| System | Model No. | Chemical Composition (%) | |||||||||
| C | Si | Mn | P | S | Ni | Cr | Mo | N | Others | ||
| Austenite | SUS201 | 0.15 max | 1.0 max | 5.5-7.5 | 0.06 max | 0.03 max | 3.5-5.5 | 16.0-18.0 | – | 0.25 max | – |
| SUS202 | 0.15 max | 1.0 max | 7.5-10.0 | 0.06 max | 0.03 max | 4.0-6.0 | 17.0-19.0 | – | 0.25 max | – | |
| SUS301 | 0.15 max | 1.0 max | 2.0 max | 0.045 max | 0.03 max | 6.0-8.0 | 16.0-18.0 | – | – | – | |
| SUS304 | 0.08 max | 1.0 max | 2.0 max | 0.045 max | 0.03 max | 8.0-10.5 | 18.0-20.0 | – | – | – | |
| SUS316L | 0.03 max | 1.0 max | 2.0 max | 0.045 max | 0.03 max | 12.0-15.0 | 16.0-18.0 | 2.0 – 3.0 | – | – | |
| SUS321 | 0.08 max | 1.0 max | 2.0 max | 0.045 max | 0.03 max | 9.0-13.0 | 17.0-19.0 | – | – | Ti: 5xC% min. | |
| Ferrite | NSSC180 | 0.02 max | 1.0 max | 1.0 max | 0.04 max | 0.006 max | 0.6 max | 19.0-21.0 | – | 0.025 max | Cu: 0.3-0.6; NB: ≥10C+N & 0.3-0.8 |
| SUS430 | 0.12 max | 0.75 max | 1.0 max | 0.06 max | 0.03 max | – | 16.0-18.0 | – | – | – | |
| 443CT | – | – | – | – | – | – | 20.0-23.0 | – | – | Cu: 0.3-0.8; Ti: 8x(C+N)-0.8 |
|
| Martensite | SUS420J2 | 0.26-0.40 | 1.0 max | 1.0 max | 0.04 max | 0.03 max | – | 12.0-14.0 | – | – | – |
