GB steel grades — 1318 designations — Page 9
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 asserted identity — the same grade under this standard’s own designation. 24 of 50 rows differ and carry an “Indicative” mark.
Also known as
1318 designations| Grade | Material no. | Category | C% by weight | Also inother standards |
|---|---|---|---|---|
| 20MnV Indicative | 1.5217 | Case hardening steels | 0.16–0.22 | 2 |
| 20R Indicative | 1.0402 | Quenched and tempered steels | 0.17–0.24 | 24 |
| 20SiMn2MoV | — | — | 0.17–0.23 | — |
| 20SiMnVB | — | — | 0.17–0.24 | — |
| 20Z Indicative | 1.0402 | Quenched and tempered steels | 0.17–0.24 | 24 |
| 21Cr12MoV | — | — | 0.18–0.24 | — |
| 21Cr17Ni2 | — | — | 0.17–0.25 | — |
| 22Cr12NiMoWV | — | — | 0.2–0.25 | — |
| 22Cr12NiWMoV | — | — | 0.2–0.25 | — |
| 22Cr20Mn10Ni2Si2N | — | — | 0.17–0.26 | — |
| 22Cr21Ni12N | — | — | 0.15–0.28 | — |
| 22Mng | — | — | ≤ 0.3 | — |
| 24Cr18Ni8W2 | — | — | 0.21–0.28 | — |
| 25 Indicative | 1.1158 | Quenched and tempered steels | 0.22–0.29 | 12 |
| 25 Indicative | 1.0415 | Quenched and tempered steels | 0.24–0.29 | 6 |
| 25 Indicative | 1.1139 | Quenched and tempered steels | 0.24–0.29 | 6 |
| 25 Indicative | 1.1163 | Quenched and tempered steels | 0.22–0.29 | 6 |
| 25 Indicative | 1.9415 | Quenched and tempered steels | 0.22–0.28 | 6 |
| 25 Indicative | 1.9416 | Others | 0.25–0.31 | 4 |
| 25 Indicative | 1.1155 | Others | 0.2–0.28 | 6 |
| 25 Indicative | 1.0406 | Quenched and tempered steels | 0.22–0.29 | 20 |
| 25 25Z ZG230-450 Indicative | 1.1155 | Others | 0.2–0.28 | 6 |
| 25Cr2Mo1V | — | — | 0.22–0.29 | — |
| 25Cr2Mo1VA Indicative | 1.7733 | Heat-resistant structural steels | 0.2–0.28 | 15 |
| 25Cr2MoV | — | — | 0.22–0.29 | — |
| 25Cr2MoVA Indicative | 1.7733 | Heat-resistant structural steels | 0.2–0.28 | 15 |
| 25Cr2Ni4W | — | — | 0.21–0.28 | — |
| 25Cr2Ni4WA | — | — | 0.21–0.28 | — |
| 25CrMnSi | — | — | 0.22–0.28 | — |
| 25CrMo Indicative | 1.7214 | Special steels for aviation and aerospace | 0.22–0.29 | 9 |
| 25CrMo Indicative | 1.7218 | Quenched and tempered steels | 0.22–0.29 | 25 |
| 25CrMoA | — | — | 0.22–0.29 | — |
| 25CrMoVA Indicative | 1.7733 | Heat-resistant structural steels | 0.2–0.28 | 15 |
| 25Mn | — | — | 0.22–0.29 | 1 |
| 25MnB | — | — | 0.23–0.28 | 1 |
| 25MnG Indicative | 1.1155 | Others | 0.2–0.28 | 6 |
| 25MnTiBRE | — | — | 0.22–0.28 | — |
| 25SiMn2MoV | — | — | 0.22–0.28 | — |
| 25Z Indicative | 1.0406 | Quenched and tempered steels | 0.22–0.29 | 20 |
| 25Z Indicative | 1.1155 | Others | 0.2–0.28 | 6 |
| 26Cr18Mn12Si2N | — | — | 0.22–0.3 | — |
| 27SiMn | — | — | 0.24–0.32 | — |
| 28MnSiB | — | — | 0.24–0.32 | — |
| 28SiMnB | — | — | 0.24–0.32 | — |
| 2Cr12MoV | — | — | 0.18–0.24 | — |
| 2Cr13 Indicative | 1.4021 | Stainless steels | 0.16–0.25 | 18 |
| 2Cr13 Indicative | 1.4006 | Stainless steels | 0.08–0.15 | 26 |
| 2Cr17Ni2 | — | — | 0.12–0.22 | — |
| 2Cr23Ni13 Indicative | 1.4828 | Heat resistant steels | ≤ 0.2 | 20 |
| 2Cr23Ni13 Indicative | 1.4833 | Heat resistant steels | ≤ 0.15 | 15 |
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.