Chemical Composition of Stainless Steel
| Chemical Composition of Stainless Steel | |||||||||||
| Grade AISI | Chemical composition-per cent | Nearest Equivalent Specification | |||||||||
| C Max | Mn Max | P Max | S Max | Si.Max | Cr | Ni | Mo | Other Element | I.S. | En' | |
| AUSTENITIC | |||||||||||
| 201 | 0.15 | 5.5/7.5 | 0.06 | 0.03 | 1 | 16.0/18.0 | 3.5/5.5 | - | - | - | - |
| 202 | 0.15 | 7.5/10 | 0.06 | 0.03 | 1 | 17.0/19.0 | 4.0/6.0 | - | - | - | - |
| 301 | 0.15 | 2.0 max | 0.045 | 0.040 | 1.0 | 16.0/18.0 | 6.0/8.0 | - | - | 10Cr17Ni7 | |
| 302 | 0.15 | 2.0 | 0.045 | 0.030 | 1.0 | 17.0/19.0 | 8.0/10.0 | - | E-4-3-4% | 07Cr18Ni9 | En-58A |
| 302HQ | 0.03 | 2.0 | 0.045 | 0.030 | 1 | 17.0/19.0 | 9.0/10.0 | - | CU:3-4.0 | - | - |
| 303 | 0.15 | 2.0 | 0.045 | 0.15min | 1.0 | 17.0/19.0 | 8.0/10.0 | - | E-4-1% Max | 15Cr18Ni9 | En-58M |
| 303EHS | 0.15 | 2.0 | 0.02 | 0.3-0.33 | 1.0 | 17.0/19.0 | 8.0/10.0 | - | CU:1%Max | - | - |
| 304 | 0.08 | 2.0 | 0.045 | 0.030 | 1.0 | 18.0/20.0 | 8.0/12.0 | - | - | 04Cr18Ni10 | En-58E |
| 304L | 0.030 | 2.0 | 0.045 | 0.030 | 1.0 | 18.0/20.0 | 8.0/12.0 | - | - | 02Cr18Ni11 | - |
| 304H.C | 0.05 | 2.0 | 0.045 | 0.03 | 1.0 | 18.0/20.0 | 8.5/9.5 | - | CU:2-2.50 | - | - |
| 308 | 0.08 | 2.0 | 0.040 | 0.030 | 1.0 | 18.0/21.0 | 10.0/12.0 | - | - | - | - |
| 308LER | 0.02 | 1.5/2.0 | 0.025 | 0.020 | 0.5 | 19.0/21.0 | 9.5/11.0 | - | - | - | - |
| 309 | 0.20 | 2.0 max | 0.045 | 0.030 | 1.0 | 22.0/24.0 | 12.0/15.0 | - | - | 20Cr24Ni12 | - |
| 309LER | 0.03 | 1.5/2.5 | 0.02 | 0.015 | 0.5 | 23.0/25.0 | 12.0/14.0 | - | - | - | - |
| 309S | 0.08 | 2.0 | 0.045 | 0.030 | 1.0 | 22.0/24.0 | 12.0/15.0 | - | - | - | - |
| 310 | 0.25 | 2.0 | 0.045 | 0.030 | 0.5 | 24.0/26.0 | 19.0/22.0 | - | - | 10Cr25Ni12 | - |
| 310S | 0.08 | 2.0 | 0.045 | 0.030 | 1.0 | 24.0/26.0 | 19.0/22.0 | - | - | - | - |
| 314 | 0.25 | 2.0 | 0.040 | 0.030 | 1.50 | 25.0/26.0 | 19.0/22.0 | - | - | - | - |
| 316 | 0.08 | 2.0 | 0.045 | 0.030 | 1.50 | 16.0/18.0 | 10.0/14.0 | 2.0/3.0 | - | 03Cr17Ni12Mo2 | En 58H |
| 316L | 0.03 | 2.0 | 0.045 | 0.030 | 1.5to3 | 16.0/18.0 | 10.0/14.0 | 2.0/3.0 | - | 03Cr17Ni12Mo2 | - |
| 316LER | 0.02 | 1.5/2.0 | 0.02 | 0.02 | 1.0 | 18.0/20.0 | 12.0/14.0 | 2.0/2.75 | - | - | - |
| 306TI | 0.080 | 2.0 | 0.045 | 0.030 | 1.0 | 16.0/20.0 | 10.0/14.0 | 2.0/3.0 | Ti5xCmin | - | - |
| 317 | 0.08 | 2.0 | 0.045 | 0.030 | 0.5 | 18.0/20.0 | 11.0/15.0 | 3.0/4.0 | - | - | - |
| 317L | 0.030 | 2.0 | 0.045 | 0.030 | 1.0 | 18.0/20.0 | 11.0/15.0 | 3.0/4.0 | N:O.10/0.22 | - | - |
| 317LN | 0.03 | 2.0 | 0.045 | 0.03 | 1 | 18.0/20.0 | 11.0/15.0 | 3.0/4.0 | N:O.10/0.22 | - | - |
| 321 | 0.08 | 2.0 | 0.045 | 0.030 | 1.0 | 17.0/19.0 | 9.0/12.0 | - | Ti5xCmin | 04Cr18Ni10Ti20 | En-58C |
| 347 | 0.080 | 2.0 | 0.045 | 0.030 | 1.0 | 17.0/19.0 | 9.0/12.0 | - | Nb/Ta10xCmin | 04Cr18Ni10Nb-40 | En-58G |