SS steel grades — 373 designations — Page 2
Every grade designated under SS, with the material number it maps to, what kind of steel it is, its carbon window and how many other standards carry it. Open a grade for its full composition, properties and its designations in other standards. Every name on this page is an indicative cross-reference, not an asserted identity: the grades are close, not interchangeable. Check the composition before you substitute.
Also known as
373 designations| Grade | Material no. | Category | C% by weight | Also inother standards |
|---|---|---|---|---|
| 1311 | 1.0036 | Unalloyed structural steels | ≤ 0.17 | 19 |
| 1311 | 1.0028 | Unalloyed structural steels | ≤ 0.15 | 18 |
| 1312 | 1.0028 | Unalloyed structural steels | ≤ 0.15 | 18 |
| 1312 | 1.0114 | Unalloyed structural steels | ≤ 0.17 | 21 |
| 1312 | 1.0038 | Unalloyed structural steels | ≤ 0.17 | 26 |
| 1312 | 1.0036 | Unalloyed structural steels | ≤ 0.17 | 20 |
| 1312 | 1.0036 | Unalloyed structural steels | ≤ 0.17 | 19 |
| 1312-00 | 1.0038 | Unalloyed structural steels | ≤ 0.17 | 26 |
| 1313 | 1.0038 | Unalloyed structural steels | ≤ 0.17 | 26 |
| 1313 | 1.0036 | Unalloyed structural steels | ≤ 0.17 | 20 |
| 1313 | 1.0036 | Unalloyed structural steels | ≤ 0.17 | 19 |
| 1313 | 1.0028 | Unalloyed structural steels | ≤ 0.15 | 18 |
| 1313 | 1.0116 | Unalloyed structural steels | ≤ 0.17 | 12 |
| 1330 | 1.0345 | Heat-resistant structural steels | ≤ 0.16 | 18 |
| 1330 | 1.8945 | Weathering steels | ≤ 0.12 | 16 |
| 1330-01 | 1.0345 | Heat-resistant structural steels | ≤ 0.16 | 18 |
| 1332 | 1.8945 | Weathering steels | ≤ 0.12 | 16 |
| 1350 | 1.0401 | Case hardening steels | 0.12–0.18 | 23 |
| 1370 | 1.1140 | Case hardening steels | 0.12–0.18 | 7 |
| 1370 | 1.1141 | Case hardening steels | 0.12–0.18 | 20 |
| 1370 | 1.0401 | Case hardening steels | 0.12–0.18 | 23 |
| 1411 | 1.0044 | Unalloyed structural steels | ≤ 0.21 | 26 |
| 1411 | 1.0144 | Unalloyed structural steels | ≤ 0.18 | 22 |
| 1412 | 1.0044 | Unalloyed structural steels | ≤ 0.21 | 26 |
| 1412 | 1.0144 | Unalloyed structural steels | ≤ 0.18 | 22 |
| 1414 | 1.0144 | Unalloyed structural steels | ≤ 0.18 | 22 |
| 1414 | 1.0044 | Unalloyed structural steels | ≤ 0.21 | 26 |
| 1414-00 | 1.0144 | Unalloyed structural steels | ≤ 0.18 | 22 |
| 1414-01 | 1.0145 | Unalloyed structural steels | ≤ 0.18 | 8 |
| 1430 | 1.0425 | Heat-resistant structural steels | ≤ 0.2 | 20 |
| 1430 | 1.0426 | Aging resistant steels | 0.08–0.2 | 17 |
| 1431 | 1.0425 | Heat-resistant structural steels | ≤ 0.2 | 20 |
| 1431 | 1.0426 | Aging resistant steels | 0.08–0.2 | 17 |
| 1432 | 1.0426 | Aging resistant steels | 0.08–0.2 | 17 |
| 1432 | 1.0425 | Heat-resistant structural steels | ≤ 0.2 | 20 |
| 1450 | 1.0402 | Quenched and tempered steels | 0.17–0.24 | 24 |
| 1450 | 1.0406 | Quenched and tempered steels | 0.22–0.29 | 20 |
| 1505 | 1.0551 | Unalloyed structural steels | ≤ 0.24 | 10 |
| 1550 | 1.0501 | Quenched and tempered steels | 0.32–0.39 | 23 |
| 1550 | 1.0050 | Unalloyed structural steels | — | 23 |
| 1550 | 1.0050 | Unalloyed structural steels | — | 23 |
| 1550-00 | 1.0050 | Unalloyed structural steels | — | 23 |
| 1550-00 | 1.0050 | Unalloyed structural steels | — | 23 |
| 1550-01 | 1.0050 | Unalloyed structural steels | — | 23 |
| 1550-01 | 1.0050 | Unalloyed structural steels | — | 23 |
| 1555 | 1.0511 | Quenched and tempered steels | 0.37–0.44 | 21 |
| 1572 | 1.1181 | Quenched and tempered steels | 0.32–0.39 | 20 |
| 1572 | 1.1183 | Steels for surface hardening | 0.33–0.39 | 7 |
| 1572 | 1.0501 | Quenched and tempered steels | 0.32–0.39 | 23 |
| 1572 | 1.1180 | Quenched and tempered steels | 0.32–0.39 | 11 |
This grade’s own name — recorded in our sources as this grade’s own designation under that standard.
Indicative — taken from a published cross-reference table; a close match, not a guarantee of interchangeability. Verify against the mill certificate before ordering.
Withdrawn — designation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.






