GB steel grades — 1318 designations — Page 12
Every grade designated under GB, 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. Unless marked, every name here is an indicative cross-reference, not an asserted identity — the grades are close, not interchangeable. 17 of 50 rows differ and carry a “This grade’s own name” mark.
Also known as
1318 designations| Grade | Material no. | Category | C% by weight | Also inother standards |
|---|---|---|---|---|
| 40CrNi | 1.5710 | Quenched and tempered steels | 0.32–0.4 | 14 |
| 40CrNi2Mo This grade’s own name | — | — | 0.38–0.43 | — |
| 40CrNiMoA | 1.6565 | Quenched and tempered steels | 0.35–0.45 | 15 |
| 40CrNiMoA | 1.6582 | Quenched and tempered steels | 0.3–0.38 | 25 |
| 40CrNiMoA | 1.6546 | Quenched and tempered steels | 0.37–0.44 | 14 |
| 40CrV | 1.7561 | Others | 0.38–0.46 | 3 |
| 40Mn | 1.1157 | Quenched and tempered steels | 0.36–0.44 | 9 |
| 40Mn2 | 1.1127 | Quenched and tempered steels | 0.34–0.42 | 6 |
| 40Mn2 | 1.1167 | Quenched and tempered steels | 0.32–0.4 | 17 |
| 40Mn2 | 1.5069 | High-strength steels | 0.35 | 7 |
| 40Mn2 | 1.5223 | Quenched and tempered steels | 0.38–0.45 | 8 |
| 40MnB | 1.7007 | Others | 0.35–0.4 | 4 |
| 40MnVB This grade’s own name | — | — | 0.37–0.44 | — |
| 40SiMnVBE This grade’s own name | — | — | 0.39–0.42 | — |
| 42Cr9Si2 This grade’s own name | — | — | 0.35–0.5 | — |
| 42CrMnMo | 1.7225 | Quenched and tempered steels | 0.38–0.45 | 25 |
| 42CrMo | 1.7225 | Quenched and tempered steels | 0.38–0.45 | 25 |
| 42CrMoE This grade’s own name | — | — | 0.38–0.45 | — |
| 42SiMn | 1.5121 | Quenched and tempered steels | 0.42–0.5 | 3 |
| 45 | — | — | — | 3 |
| 45 | 1.0912 | Others | 0.42–0.5 | 11 |
| 45 | 1.0503 | Quenched and tempered steels | 0.42–0.5 | 24 |
| 45 | 1.1191 | Quenched and tempered steels | 0.42–0.5 | 21 |
| 45 | 1.1191 | Others | 0.42–0.5 | 18 |
| 45 This grade’s own name | 1.1192 | Cold extrusion steels | 0.42–0.5 | 2 |
| 45 | 1.1730 | Unalloyed tool steels / carbon steels | 0.42–0.5 | 14 |
| 45A This grade’s own name | — | — | 0.42–0.5 | — |
| 45B This grade’s own name | — | — | — | 1 |
| 45Cr | 1.7034 | Quenched and tempered steels | 0.34–0.41 | 23 |
| 45Cr14Ni14W2Mo This grade’s own name | — | — | 0.4–0.5 | — |
| 45Cr9Si3 This grade’s own name | — | — | 0.4–0.5 | — |
| 45CrA This grade’s own name | — | — | 0.42–0.49 | — |
| 45CrH | 1.7034 | Quenched and tempered steels | 0.34–0.41 | 23 |
| 45CrNi This grade’s own name | — | — | 0.42–0.49 | — |
| 45CrNiMoV This grade’s own name | — | — | 0.42–0.49 | — |
| 45CrNiMoVA This grade’s own name | — | — | 0.42–0.49 | — |
| 45G | 1.3505 | Bearing steels | 0.93–1.05 | 22 |
| 45H | 1.1191 | Quenched and tempered steels | 0.42–0.5 | 21 |
| 45H | 1.1191 | Others | 0.42–0.5 | 18 |
| 45H | 1.0503 | Quenched and tempered steels | 0.42–0.5 | 24 |
| 45Mn This grade’s own name | — | — | 0.42–0.5 | — |
| 45Mn2 | 1.0912 | Others | 0.42–0.5 | 11 |
| 45Mn2 | 1.0762 | Free cutting steels | 0.4–0.48 | 20 |
| 45Mn2A | 1.0762 | Free cutting steels | 0.4–0.48 | 20 |
| 45MnB This grade’s own name | — | — | — | 1 |
| 4C13 | 1.4031 | Stainless steels | 0.36–0.42 | 18 |
| 4Cr10Si2Mo | 1.4731 | Valve steels | 0.35–0.45 | 12 |
| 4Cr13 | 1.4034 | Stainless steels | 0.43–0.5 | 18 |
| 4Cr13 | 1.2083 | Tool steels for cold work | 0.36–0.42 | 16 |
| 4Cr13NiVSi This grade’s own name | — | — | 0.35–0.45 | — |
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.