ISO steel grades — 531 designations — Page 2
Every grade designated under ISO, 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
531 designations| Grade | Material no. | Category | C% by weight | Also inother standards |
|---|---|---|---|---|
| 20MnCr5 | 1.7149 | Case hardening steels | 0.17–0.22 | 8 |
| 20MnCr5 | 1.2162 | Tool steels for cold work | 0.18–0.24 | 7 |
| 20MnCr5 | 1.7147 | Case hardening steels | 0.17–0.22 | 15 |
| 20MnCr5 | 1.7131 | Case hardening steels | 0.14–0.19 | 24 |
| 20MnCrS5 | 1.7131 | Case hardening steels | 0.14–0.19 | 24 |
| 20MnCrS5 | 1.7139 | Case hardening steels | 0.14–0.19 | 11 |
| 20MnCrS5 | 1.7147 | Case hardening steels | 0.17–0.22 | 15 |
| 20MnCrS5 | 1.2162 | Tool steels for cold work | 0.18–0.24 | 7 |
| 20MnCrS5 | 1.7149 | Case hardening steels | 0.17–0.22 | 8 |
| 20NiCrMo2 | 1.6526 | Case hardening steels | 0.17–0.23 | 9 |
| 20NiCrMo2 | 1.6523 | Case hardening steels | 0.17–0.23 | 18 |
| 20NiCrMo2 | 1.6522 | Case hardening steels | 0.17–0.23 | 6 |
| 20NiCrMo2F | 1.6522 | Case hardening steels | 0.17–0.23 | 6 |
| 20NiCrMo2F | 1.6526 | Case hardening steels | 0.17–0.23 | 9 |
| 20NiCrMoS2 | 1.6523 | Case hardening steels | 0.17–0.23 | 18 |
| 20NiCrMoS2 | 1.6526 | Case hardening steels | 0.17–0.23 | 9 |
| 210Cr12 | 1.2080 | Tool steels for cold work | 1.9–2.2 | 18 |
| 21MnCr5 | 1.7131 | Case hardening steels | 0.14–0.19 | 24 |
| 21MnCr5 | 1.7139 | Case hardening steels | 0.14–0.19 | 11 |
| 21MnCr5 | 1.7147 | Case hardening steels | 0.17–0.22 | 15 |
| 21MnCr5 | 1.7149 | Case hardening steels | 0.17–0.22 | 8 |
| 21MnCr5 | 1.2162 | Tool steels for cold work | 0.18–0.24 | 7 |
| 22Mn6 | 1.1133 | Quenched and tempered steels | 0.17–0.23 | 20 |
| 22Mn6H | 1.1133 | Quenched and tempered steels | 0.17–0.23 | 20 |
| 250 | EN-JL1040 | Others | — | 22 |
| 25CrMo4 | 1.7218 | Quenched and tempered steels | 0.22–0.29 | 25 |
| 25CrMo4 | — | — | 0.23–0.28 | 3 |
| 25CrMoS4 | 1.7213 | Others | 0.22–0.29 | 5 |
| 28Mn6 | 1.1170 | Quenched and tempered steels | 0.25–0.32 | 16 |
| 300 | EN-JL1050 | Others | — | 22 |
| 30WCrV5 | 1.2567 | Tool steels for hot work | 0.25–0.35 | 9 |
| 31CrNiMo8 | 1.6580 | Quenched and tempered steels | 0.26–0.34 | 15 |
| 32CrMoV12-28 | 1.2365 | Tool steels for hot work | 0.28–0.35 | 18 |
| 34Cr4 | 1.7034 | Quenched and tempered steels | 0.34–0.41 | 23 |
| 34Cr4 | 1.7033 | Quenched and tempered steels | 0.3–0.37 | 18 |
| 34Cr4 | — | — | 0.33–0.38 | 4 |
| 34CrMo4 | 1.7220 | Quenched and tempered steels | 0.3–0.37 | 24 |
| 34CrMo4E | 1.7220 | Quenched and tempered steels | 0.3–0.37 | 24 |
| 34CrMoS4 | 1.7220 | Quenched and tempered steels | 0.3–0.37 | 24 |
| 34CrMoS4 | 1.7226 | Others | 0.3–0.37 | 9 |
| 34CrS4 | 1.7033 | Quenched and tempered steels | 0.3–0.37 | 18 |
| 34CrS4 | 1.7034 | Quenched and tempered steels | 0.34–0.41 | 23 |
| 34CrS4 | 1.7037 | Quenched and tempered steels | 0.3–0.37 | 8 |
| 350 | EN-JL1060 | Others | — | 21 |
| 3505 | 1.3505 | Bearing steels | 0.93–1.05 | 22 |
| 3505 | 1.2067 | Tool steels for cold work | 0.95–1.1 | 21 |
| 3520 | 1.3520 | Bearing steels | 0.93–1.05 | 16 |
| 3567 | 1.7218 | Quenched and tempered steels | 0.22–0.29 | 25 |
| 3567 | 1.3567 | Others | 0.17–0.23 | 7 |
| 35CrMoV5 | 1.2343 | Tool steels for hot work | 0.33–0.41 | 20 |
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.