STAS steel grades — 203 designations — Page 4
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 |
|---|---|---|---|---|
| OLC50X | 1.1206 | Quenched and tempered steels | 0.47–0.55 | 17 |
| OLC50X | 1.1210 | Steels for surface hardening | 0.5–0.57 | 8 |
| OLC55 | 1.0535 | Quenched and tempered steels | 0.52–0.6 | 21 |
| OLC55A | 1.0535 | Quenched and tempered steels | 0.52–0.6 | 21 |
| OLC55X | 1.0535 | Quenched and tempered steels | 0.52–0.6 | 21 |
| OLC60 | 1.0601 | Quenched and tempered steels | 0.57–0.65 | 25 |
| OLC60AT | 1.0601 | Quenched and tempered steels | 0.57–0.65 | 25 |
| OLC60X | 1.0601 | Quenched and tempered steels | 0.57–0.65 | 25 |
| OLC65A | 1.0612 | Others | 0.63–0.68 | 12 |
| OLC66S | 1.1231 | Spring steels | 0.65–0.73 | 18 |
| OLC70A | 1.1231 | Spring steels | 0.65–0.73 | 18 |
| OLC85A | 1.1269 | Spring steels | 0.8–0.9 | 14 |
| OSC 10 | 1.1274 | Spring steels | 0.95–1.05 | 13 |
| OSC 8M | 1.1535 | Unalloyed tool steels / carbon steels | 0.85–0.95 | 14 |
| OSC 8M | 1.1830 | Unalloyed tool steels / carbon steels | 0.8–0.9 | 10 |
| OSC10 | 1.1645 | Unalloyed tool steels / carbon steels | 1–1.1 | 18 |
| OSC10 | 1.1545 | Unalloyed tool steels / carbon steels | 1–1.1 | 19 |
| OSC11 | 1.1545 | Unalloyed tool steels / carbon steels | 1–1.1 | 19 |
| OSC7 | 1.1620 | Unalloyed tool steels / carbon steels | 0.65–0.74 | 14 |
| OSC8 | 1.1525 | Unalloyed tool steels / carbon steels | 0.75–0.85 | 20 |
| OSC8 | 1.1625 | Unalloyed tool steels / carbon steels | 0.75–0.85 | 15 |
| OT400-1 | 1.0416 | Others | 0.15–0.2 | 17 |
| OT400-3 | 1.0416 | Others | 0.15–0.2 | 17 |
| OT450-3 | 1.0443 | Others | ≤ 0.11 | 13 |
| OT500-1 | 1.0552 | Others | ≤ 0.25 | 13 |
| OT500-3 | 1.0552 | Others | ≤ 0.25 | 13 |
| Rp3 | 1.3355 | High-speed steels | 0.73–0.83 | 22 |
| Rp5 | 1.3343 | High-speed steels | 0.86–0.94 | 19 |
| RUL1 | 1.3505 | Bearing steels | 0.93–1.05 | 22 |
| RUL1v | 1.3505 | Bearing steels | 0.93–1.05 | 22 |
| RUL2 | 1.3520 | Bearing steels | 0.93–1.05 | 16 |
| RUL2v | 1.3520 | Bearing steels | 0.93–1.05 | 16 |
| T 30Mn14R | 1.5531 | Quenched and tempered steels | 0.27–0.33 | 5 |
| T 30Mn14R | 1.5526 | Others | 0.27–0.32 | 5 |
| T105Mn120 | 1.3401 | Quenched and tempered steels | 1.1–1.3 | 19 |
| T12TiMoNiCr175 | 1.4581 | Cast stainless steels | ≤ 0.07 | 9 |
| T130Mn135 | 1.3401 | Quenched and tempered steels | 1.1–1.3 | 19 |
| T15Cr130 | 1.4006 | Stainless steels | 0.08–0.15 | 26 |
| T15NiCr180 | 1.4312 | Cast stainless steels | ≤ 0.12 | 15 |
| T15TiNiCr180 | 1.4312 | Cast stainless steels | ≤ 0.12 | 15 |
| T20Cr130 | 1.4027 | Cast stainless steels | 0.16–0.23 | 14 |
| T20Mn14 | 1.1120 | Others | 0.17–0.23 | 13 |
| T30CrMo3 | 1.7220 | Quenched and tempered steels | 0.3–0.37 | 24 |
| T30CrMo3 | 1.7218 | Quenched and tempered steels | 0.22–0.29 | 25 |
| T30Mn14R | 1.1165 | Quenched and tempered steels | 0.25–0.32 | 16 |
| T30MoCrNi14 | 1.6582 | Quenched and tempered steels | 0.3–0.38 | 25 |
| T30SiMn12 | 1.1165 | Quenched and tempered steels | 0.25–0.32 | 16 |
| T34MoCr09 | 1.7220 | Quenched and tempered steels | 0.3–0.37 | 24 |
| T35Mn14 | 1.1167 | Quenched and tempered steels | 0.32–0.4 | 17 |
| T35MoCrNi08 | 1.6511 | Quenched and tempered steels | 0.32–0.4 | 18 |
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.