GB steel grades — 1318 designations — Page 18
Every grade designated under GB, with the identifying and comparative data we hold for each. 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. 13 of 50 rows differ and carry an “Indicative” mark.
Also known as
1318 designations| Grade | C% by weight | Also inother standards |
|---|---|---|
| HRB400E | ≤ 0.25 | — |
| HRB500 | ≤ 0.25 | — |
| HT100 Indicative | — | 16 |
| HT150 Indicative | — | 22 |
| HT200 Indicative | — | 22 |
| HT250 Indicative | — | 22 |
| HT300 Indicative | — | 22 |
| HT350 Indicative | — | 21 |
| HT400 | — | 4 |
| MFT10 | 0.08–0.14 | — |
| MFT8 | 0.16–0.26 | — |
| MFT9 | 0.18–0.26 | — |
| ML022Cr17Ni12Mo2 | ≤ 0.03 | — |
| ML022Cr19Ni10 | ≤ 0.03 | — |
| ML04Al | ≤ 0.06 | — |
| ML06Al | ≤ 0.08 | — |
| ML06Cr11Ti | ≤ 0.08 | — |
| ML06Cr17Ni12Mo2 | ≤ 0.08 | — |
| ML06Cr18Ni11Ti | ≤ 0.08 | — |
| ML06Cr18Ni9Cu2 | ≤ 0.08 | — |
| ML06Cr19Ni10 | ≤ 0.08 | — |
| ML08 Indicative | ≤ 0.12 | 17 |
| ML08Al | 0.05–0.1 | — |
| ML10 Indicative | ≤ 0.1 | 11 |
| ML10Al | 0.08–0.13 | 5 |
| ML10Cr15 | ≤ 0.12 | — |
| ML12 | 0.1–0.15 | — |
| ML12Al | 0.1–0.15 | — |
| ML12Cr13 | 0.08–0.15 | — |
| ML14Cr17Ni2 | 0.11–0.17 | — |
| ML15 Indicative | 0.13–0.17 | 7 |
| ML15Al | 0.13–0.18 | — |
| ML15Cr Indicative | 0.12–0.18 | 15 |
| ML15Mn | 0.14–0.2 | — |
| ML15MnB | 0.14–0.2 | 3 |
| ML15MnVB | 0.13–0.18 | — |
| ML18Mn | 0.15–0.2 | 4 |
| ML1Cr17 Indicative | ≤ 0.08 | 18 |
| ML1Cr17Ni2 Indicative | 0.12–0.22 | 17 |
| ML20 | 0.18–0.23 | 5 |
| ML20Al | 0.18–0.23 | 4 |
| ML20B | 0.18–0.23 | — |
| ML20Cr | 0.18–0.23 | — |
| ML20Cr13 | 0.16–0.25 | — |
| ML20CrMo | 0.18–0.23 | 3 |
| ML20Mn | 0.18–0.23 | — |
| ML20MnB | 0.18–0.23 | — |
| ML20MnTiB | 0.18–0.23 | — |
| ML20MnVB | 0.18–0.23 | — |
| ML25 Indicative | 0.22–0.29 | 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Withdrawn — designation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.