GB steel grades — 1318 designations — Page 8
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. 24 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 |
|---|---|---|---|---|
| 1Cr25Ni20Si2 | 1.4845 | Heat resistant steels | ≤ 0.1 | 21 |
| 1Cr25Ti | 1.4746 | Others | ≤ 0.12 | 8 |
| 1Cr5Mo This grade’s own name | — | — | ≤ 0.15 | — |
| 1Cr6Si2Mo This grade’s own name | — | — | ≤ 0.15 | — |
| 1Ni3MnCuMoAl This grade’s own name | — | — | 0.1–0.2 | 1 |
| 1Y1Cr13 | 1.4005 | Stainless steels | 0.08–0.15 | 14 |
| 20 | 1.0254 | Unalloyed structural steels | ≤ 0.16 | 6 |
| 20 | 1.0345 | Heat-resistant structural steels | ≤ 0.16 | 18 |
| 20 | 1.0562 | Fine-grain structural steels | ≤ 0.18 | 18 |
| 20 | 1.1151 | Quenched and tempered steels | 0.17–0.24 | 15 |
| 20 | 1.0402 | Quenched and tempered steels | 0.17–0.24 | 24 |
| 20Cr | 1.7027 | Case hardening steels | 0.17–0.23 | 12 |
| 20Cr13 This grade’s own name | — | — | 0.16–0.25 | — |
| 20Cr13Mn9Ni4 This grade’s own name | — | — | 0.15–0.25 | — |
| 20Cr15Mn15Ni2N This grade’s own name | — | — | 0.15–0.25 | — |
| 20Cr25Ni20 This grade’s own name | — | — | ≤ 0.25 | — |
| 20Cr25Ni20Si2 This grade’s own name | — | — | ≤ 0.25 | — |
| 20Cr2Ni4 This grade’s own name | — | — | 0.17–0.23 | — |
| 20Cr2Ni4A This grade’s own name | — | — | 0.17–0.23 | — |
| 20Cr3MoWV This grade’s own name | — | — | 0.17–0.24 | — |
| 20Cr3MoWVA This grade’s own name | — | — | 0.17–0.24 | — |
| 20CrH | 1.3523 | Case hardening steels | 0.17–0.22 | 8 |
| 20CrH | 1.7147 | Case hardening steels | 0.17–0.22 | 15 |
| 20CrMn | 1.7147 | Case hardening steels | 0.17–0.22 | 15 |
| 20CrMn | 1.7131 | Case hardening steels | 0.14–0.19 | 24 |
| 20CrMn | 1.7176 | Spring steels | 0.52–0.59 | 18 |
| 20CrMnMo This grade’s own name | — | — | 0.17–0.23 | — |
| 20CrMnMoH This grade’s own name | — | — | 0.17–0.23 | — |
| 20CrMnSi This grade’s own name | — | — | 0.17–0.23 | — |
| 20CrMnTi | 1.7131 | Case hardening steels | 0.14–0.19 | 24 |
| 20CrMnTi | 1.7147 | Case hardening steels | 0.17–0.22 | 15 |
| 20CrMo This grade’s own name | — | — | 0.17–0.24 | 1 |
| 20CrMoA This grade’s own name | — | — | 0.17–0.24 | — |
| 20CrNi This grade’s own name | — | — | 0.17–0.23 | — |
| 20CrNi3 | 1.5919 | Case hardening steels | 0.12–0.18 | 11 |
| 20CrNi3A | 1.5752 | Case hardening steels | 0.14–0.2 | 15 |
| 20CrNi3A | 1.5919 | Case hardening steels | 0.12–0.18 | 11 |
| 20CrNiMo | 1.6523 | Case hardening steels | 0.17–0.23 | 18 |
| 20CrNiMoA This grade’s own name | — | — | 0.17–0.23 | — |
| 20CrNiMoH | 1.6523 | Case hardening steels | 0.17–0.23 | 18 |
| 20CrV | — | — | — | 2 |
| 20G | 1.0402 | Quenched and tempered steels | 0.17–0.24 | 24 |
| 20G This grade’s own name | 1.1133 | Quenched and tempered steels | 0.17–0.23 | 20 |
| 20Mn This grade’s own name | — | — | 0.17–0.23 | 3 |
| 20Mn2 | 1.1133 | Quenched and tempered steels | 0.17–0.23 | 20 |
| 20Mn2B This grade’s own name | — | — | 0.17–0.24 | — |
| 20MnCr | 1.7147 | Case hardening steels | 0.17–0.22 | 15 |
| 20MnG | 1.1133 | Quenched and tempered steels | 0.17–0.23 | 20 |
| 20MnMoB This grade’s own name | — | — | — | 1 |
| 20MnTiB This grade’s own name | — | — | 0.17–0.24 | — |
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.