STAS steel grades — 203 designations — Page 3
Every grade designated under STAS, 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
203 designations| Grade | Material no. | Category | C% by weight | Also inother standards |
|---|---|---|---|---|
| OL32.1 | 1.0035 | Unalloyed structural steels | — | 22 |
| OL34.1 | 1.0034 | Unalloyed structural steels | ≤ 0.15 | 12 |
| OL37.1 | 1.0038 | Unalloyed structural steels | ≤ 0.17 | 26 |
| OL37.1 | 1.0036 | Unalloyed structural steels | ≤ 0.17 | 20 |
| OL37.1 | 1.0036 | Unalloyed structural steels | ≤ 0.17 | 19 |
| OL37.2 | 1.0038 | Unalloyed structural steels | ≤ 0.17 | 26 |
| OL37.4 | 1.0038 | Unalloyed structural steels | ≤ 0.17 | 26 |
| OL37.4 | 1.0028 | Unalloyed structural steels | ≤ 0.15 | 18 |
| OL42.1 | 1.0144 | Unalloyed structural steels | ≤ 0.18 | 22 |
| OL42.1 | 1.0044 | Unalloyed structural steels | ≤ 0.21 | 26 |
| OL44.2 | 1.0044 | Unalloyed structural steels | ≤ 0.21 | 26 |
| OL44.3 | 1.0426 | Aging resistant steels | 0.08–0.2 | 17 |
| OL44.3 | 1.0425 | Heat-resistant structural steels | ≤ 0.2 | 20 |
| OL50.1 | 1.0050 | Unalloyed structural steels | — | 23 |
| OL50.1 | 1.0050 | Unalloyed structural steels | — | 23 |
| OL52.3 | 1.0570 | Unalloyed structural steels | ≤ 0.2 | 22 |
| OL52.3 | 1.0570 | Unalloyed structural steels | ≤ 0.2 | 20 |
| OL52.4 | 1.0570 | Unalloyed structural steels | ≤ 0.2 | 22 |
| OL52.4 | 1.0570 | Unalloyed structural steels | ≤ 0.2 | 20 |
| OL60.1k | 1.0060 | Unalloyed structural steels | — | 21 |
| OL60.1k | 1.0060 | Unalloyed structural steels | — | 21 |
| OLC 75A | 1.1248 | Spring steels | 0.7–0.8 | 11 |
| OLC 75A | 1.0605 | Spring steels | 0.7–0.8 | 11 |
| OLC 75A | 1.2003 | Tool steels for cold work | 0.7–0.8 | 9 |
| OLC10 | 1.0301 | Case hardening steels | 0.07–0.13 | 20 |
| OLC10X | 1.1121 | Case hardening steels | 0.07–0.13 | 22 |
| OLC15 | 1.0401 | Case hardening steels | 0.12–0.18 | 23 |
| OLC15 | 1.1141 | Case hardening steels | 0.12–0.18 | 20 |
| OLC15AT | 1.0401 | Case hardening steels | 0.12–0.18 | 23 |
| OLC15X | 1.0401 | Case hardening steels | 0.12–0.18 | 23 |
| OLC20 | 1.0402 | Quenched and tempered steels | 0.17–0.24 | 24 |
| OLC20X | 1.0402 | Quenched and tempered steels | 0.17–0.24 | 24 |
| OLC25 | 1.0406 | Quenched and tempered steels | 0.22–0.29 | 20 |
| OLC25q | 1.0406 | Quenched and tempered steels | 0.22–0.29 | 20 |
| OLC25X | 1.0406 | Quenched and tempered steels | 0.22–0.29 | 20 |
| OLC30 | 1.0528 | Quenched and tempered steels | 0.27–0.34 | 14 |
| OLC35 | 1.0501 | Quenched and tempered steels | 0.32–0.39 | 23 |
| OLC35AS | 1.0501 | Quenched and tempered steels | 0.32–0.39 | 23 |
| OLC35q | 1.0501 | Quenched and tempered steels | 0.32–0.39 | 23 |
| OLC35X | 1.0501 | Quenched and tempered steels | 0.32–0.39 | 23 |
| OLC35X | 1.1181 | Quenched and tempered steels | 0.32–0.39 | 20 |
| OLC35X | 1.1180 | Quenched and tempered steels | 0.32–0.39 | 11 |
| OLC40 | 1.0511 | Quenched and tempered steels | 0.37–0.44 | 21 |
| OLC40X | 1.0511 | Quenched and tempered steels | 0.37–0.44 | 21 |
| OLC45 | 1.0503 | Quenched and tempered steels | 0.42–0.5 | 24 |
| OLC45q | 1.0503 | Quenched and tempered steels | 0.42–0.5 | 24 |
| OLC45X | 1.0503 | Quenched and tempered steels | 0.42–0.5 | 24 |
| OLC50AT | 1.0535 | Quenched and tempered steels | 0.52–0.6 | 21 |
| OLC50X | 1.0535 | Quenched and tempered steels | 0.52–0.6 | 21 |
| OLC50X | 1.0540 | Quenched and tempered steels | 0.47–0.55 | 13 |
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.