| Stainless Steel Family | AISI Designation | European Standard Designation | |
| Name | Number | ||
| Austenitic | 201 | X12CrMnNiN17-7-5 | 1.4372 |
| 202 | X12CrMnNiN18-9-5 | 1.4373 | |
| 301 | X10CrNi18-8 | 1.4310 | |
| 301L | X2CrNiN18-7 | 1.4318 | |
| 304 | X5CrNi18-10 | 1.4301 | |
| 304L | X2CrNi18-9 | 1.4307 | |
| 305 | X4CrNi18-12 | 1.4303 | |
| 316 | X5CrNiMo17-12-2 | 1.4401 | |
| 316L | X2CrNiMo17-12-2 | 1.4404 | |
| 321 | X6CrNiTi18-10 | 1.4541 | |
| Martensitic | 410 | X12Cr13 | 1.4006 |
| 420 | X30Cr13 | 1.4028 | |
| Ferritic | 430 | X6Cr17 | 1.4016 |
| 409 | X2CrTi12 | 1.4512 | |
| 434 | X6CrMo17-1 | 1.4113 | |
| 441 | X2CrTiNb18 | 1.4509 | |
| 436 | X6CrMoNb17-1 | 1.4526 | |
N.B.:AISI stands for American Iron and Steel Institute
| SAE No. | AISI No. | C (Max) | Si (Max) | Mn (Max) | P (Max) | S (Max) | Cr | Mo | Ni | Others |
| 30201 | 201 | 0.15 | 1.00 | 5.50/7.50 | 0.06 | 0.03 | 16.00/18.00 | ------ | 3.50/5.50 | N 0.25 Max |
| 30202 | 202 | 0.15 | 1.00 | 7.50/10.00 | 0.06 | 0.03 | 17.00/19.00 | ------ | 4.00/6.00 | N 0.25 Max |
| 30301 | 301 | 0.15 | 1.00 | 2.00 | 0.06 | 0.03 | 16.00/18.00 | ------ | 6.00/8.00 | ------------ |
| 30302 | 302 | 0.15 | 1.00 | 2.00 | 0.045 | 0.03 | 17.00/19.00 | ------ | 8.00/10.00 | ------------ |
| 30302B | 302B | 0.15 | 2.00/3.00 | 2.00 | 0.045 | 0.03 | 17.00/19.00 | 0.60 Max | 8.00/10.00 | ------------ |
| 30303 | 303 | 0.15 | 1.00 | 2.00 | 0.045 | 0.15 Min | 17.00/19.00 | ------ | 8.00/10.00 | Zr 0.60 Max |
| 30303Se | 303Se | 0.15 | 1.00 | 2.00 | 0.20 | 0.06 | 17.00/19.00 | ------ | 8.00/10.00 | Se 0.15 Min |
| 30304 | 304 | 0.08 | 1.00 | 2.00 | 0.20 | 0.03 | 18.00/20.00 | ------ | 8.00/10.50 | ------------ |
| 30304L | 304L | 0.03 | 1.00 | 2.00 | 0.045 | 0.03 | 18.00/20.00 | ------ | 8.00/12.00 | ------------ |
| 30305 | 305 | 0.12 | 1.00 | 2.00 | 0.045 | 0.03 | 17.00/19.00 | ------ | 10.50/13.00 | ------------ |
| 30308 | 308 | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 19.00/21.00 | ------ | 10.00/12.00 | ------------ |
| 30309 | 309 | 0.20 | 1.00 | 2.00 | 0.045 | 0.03 | 22.00/24.00 | ------ | 12.00/15.00 | ------------ |
| 30309S | 309S | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 22.00/24.00 | ------ | 12.00/15.00 | ------------ |
| 30310 | 310 | 0.25 | 1.50 | 2.00 | 0.045 | 0.03 | 24.00/26.00 | ------ | 19.00/22.00 | ------------ |
| 30310S | 310S | 0.08 | 1.50 | 2.00 | 0.045 | 0.03 | 24.00/26.00 | ------ | 19.00/22.00 | ------------ |
| 30314 | 314 | 0.25 | 1.50/3.00 | 2.00 | 0.045 | 0.03 | 23.00/26.00 | ------ | 19.00/22.00 | ------------ |
| 30316 | 316 | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 16.00/18.00 | 2.00/3.00 | 10.00/14.00 | ------------ |
| 30316L | 316L | 0.03 | 1.00 | 2.00 | 0.045 | 0.03 | 16.00/18.00 | 2.00/3.00 | 10.00/14.00 | ------------ |
| 30317 | 317 | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 18.00/20.00 | 3.00/4.00 | 11.00/15.00 | ------------ |
| 30321 | 321 | 0.15 | 1.00 | 2.00 | 0.045 | 0.03 | 17.00/19.00 | ------ | 9.00/12.00 | Ti 5×C Min |
| 30330 | ----- | 0.15 | 1.50 | 2.00 | 0.045 | 0.04 | 14.00/17.00 | ------ | 33.00/37.00 | ------------ |
| 30347 | 347 | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 17.00/19.00 | ------ | 9.00/13.00 | Nb:Ta 10×C Min |
| 30348 | 348 | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 17.00/19.00 | ------ | 9.00/13.00 |
Nb:Ta 10×C Min Ta : 0.10 Max Co : 0.20 Max |
| 30384 | 384 | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 15.00/17.00 | ------ | 17.00/19.00 | ------------- |
| 30385 | 385 | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 11.50/13.50 | ------ | 14.00/16.00 | ------------- |
| 51403 | 403 | 0.15 | 0.50 | 1.00 | 0.04 | 0.03 | 11.50/13.00 | ------ | --------- | ------------- |
| 51405 | 405 | 0.08 | 1.00 | 1.00 | 0.04 | 0.03 | 11.50/14.50 | ------ | --------- | Al 0.10/0.30 |
| 51409 | ------ | 0.08 | 1.00 | 1.00 | 0.045 | 0.045 | 10.50/11.75 | ------ | 0.50 Max | Ti 6C/0.75 |
| 51410 | 410 | 0.15 | 1.00 | 1.00 | 0.04 | 0.03 | 11.50/13.50 | ------ | --------- | ------------ |
| 51414 | 414 | 0.15 | 1.00 | 1.00 | 0.04 | 0.03 | 11.50/13.50 | ------ | 1.25/2.50 | ------------ |
| 51416 | ------ | 0.15 | 1.00 | 1.25 | 0.06 | 0.15 Min | 12.00/14.00 | 0.60 Max | ---------- | ------------ |
| ------- | 416 | 0.15 | 1.00 | 1.25 | 0.06 | 0.15 Min | 12.00/14.00 | 0.60 Max | ---------- | ------------- |
| 51416Se | 416Se | 0.15 | 1.00 | 1.25 | 0.06 | 0.06 | 12.00/14.00 | ------ | ---------- | Se 0.15 Min |
| 51420 | 420 | Over 0.15 | 1.00 | 1.00 | 0.04 | 0.03 | 12.00/14.00 | ------ | -------- | ------ |
| 51420F | 420F | Over 0.15 | 1.00 | 1.25 | 0.06 | 0.15 Min | 12.00/14.00 | 0.60 Max | ---------- | ----------- |
| 51420FSe | ------ | 0.30 / 0.40 | 1.00 | 1.25 | 0.06 | 0.06 | 12.00/14.00 | ------ | ---------- | Se 0.15 Min |
| 51429 | 429 | 0.12 | 1.00 | 1.00 | 0.03 | 0.04 | 14.00/16.00 | ------ | ---------- | |
| 51430 | 430 | 0.12 | 1.00 | 1.00 | 0.04 | 0.03 | 16.00/18.00 | ------ | ---------- | |
| 51430F | 430F | 0.12 | 1.00 | 1.25 | 0.06 | 0.15 Min | 16.00/18.00 | 0.60 Max | ---------- | |
| 51430FSe | 430FSe | 0.12 | 1.00 | 1.25 | 0.06 | 0.06 | 16.00/18.00 | ----- | ---------- | Se 0.15 Min |
| 51431 | 431 | 0.20 | 1.00 | 1.00 | 0.04 | 0.03 | 15.00/17.00 | -------- | 1.25/2.50 | ------- |
| 51434 | 434 | 0.12 | 1.00 | 1.00 | 0.04 | 0.03 | 16.00/18.00 | 0.75/1.25 | -------- | --------- |
| 51436 | 436 | 0.12 | 1.00 | 1.00 | 0.04 | 0.03 | 16.00/18.00 | 0.75/1.25 | --------- | --------- |
| 51440A | 440A | 0.60 / 0.75 | 1.00 | 1.00 | 0.04 | 0.03 | 16.00/18.00 | 0.75 Max | -------- | --------- |
| 51440B | 440B | 0.75 / 0.95 | 1.00 | 1.00 | 0.04 | 0.03 | 16.00/18.00 | 0.75 Max | ------- | ------- |
| 51440C | 440C | 0.95 / 1.20 | 1.00 | 1.00 | 0.04 | 0.03 | 16.00/18.00 | 0.75 Max | -------- | ------- |
| 51440F | ------- | 0.95 / 1.20 | 1.00 | 1.25 | 0.04 | 0.15 Min | 16.00/18.00 | 0.75 Max | ------- | ------ |
| 51440FSe | ------- | 0.95 / 1.20 | 1.00 | 1.25 | 0.04 | 0.06 | 16.00/18.00 | ------- | -------- | Se 0.15 Min |
| 51442 | ------- | 0.20 | 1.00 | 1.00 | 0.04 | 0.035 | 18.00/23.00 | -------- | -------- | --------- |
| --------- | 0.20 | 1.00 | 1.00 | 0.04 | 0.03 | 18.00/23.00 | ------- | --------- | ------- | |
| 51446 | 0.20 | 1.00 | 1.50 | 0.04 | 0.03 | 23.00/27.00 | ------- | --------- | N 0.25 Max | |
| --------- | 0.20 | 1.00 | 1.50 | 0.04 | 0.03 | 23.00/27.00 | -------- | N 0.25 Max | ||
| 51501 | Over 0.10 | 1.00 | 1.00 | 0.04 | 0.03 | 4.00/6.00 | 0.40/0.65 | -------- | ------- | |
| 51502 | 0.10 | 1.00 | 1.00 | 0.04 | 0.03 | 4.00/6.00 | 0.40/0.65 | ---------- | ------- |
N.B.: (1) ‘AISI’ stands for American Iron and Steel Institute.
(2) ‘SAE’ stands for Society of Automotive Engineers.