GB steel grades — 1318 designations — Page 22
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. 9 of 50 rows differ and carry an “Indicative” mark.
Also known as
1318 designations| Grade | C% by weight |
|---|---|
| Q355B | ≤ 0.2 |
| Q355GNH | ≤ 0.12 |
| Q355MB | ≤ 0.14 |
| Q355MC | ≤ 0.14 |
| Q355MD | ≤ 0.14 |
| Q355ME | ≤ 0.14 |
| Q355MF | ≤ 0.14 |
| Q355NB | ≤ 0.2 |
| Q355NC | ≤ 0.2 |
| Q355ND | ≤ 0.2 |
| Q355NE | ≤ 0.18 |
| Q355NF | ≤ 0.16 |
| Q355NH | ≤ 0.16 |
| Q370R | ≤ 0.18 |
| Q390A | ≤ 0.2 |
| Q390B | ≤ 0.2 |
| Q390C Indicative | — |
| Q390C Indicative | — |
| Q390D | ≤ 0.2 |
| Q390E | ≤ 0.2 |
| Q390GNH | ≤ 0.12 |
| Q390MB | ≤ 0.15 |
| Q390MC | ≤ 0.15 |
| Q390MD | ≤ 0.15 |
| Q390ME | ≤ 0.15 |
| Q390NB | ≤ 0.2 |
| Q390NC | ≤ 0.2 |
| Q390ND | ≤ 0.2 |
| Q390NE | ≤ 0.2 |
| Q420A | ≤ 0.2 |
| Q420B | ≤ 0.2 |
| Q420C Indicative | ≤ 0.2 |
| Q420D Indicative | ≤ 0.2 |
| Q420E Indicative | ≤ 0.2 |
| Q420MB | ≤ 0.16 |
| Q420MC | ≤ 0.16 |
| Q420MD | ≤ 0.16 |
| Q420ME | ≤ 0.16 |
| Q420NB | ≤ 0.2 |
| Q420NC | ≤ 0.2 |
| Q420ND | ≤ 0.2 |
| Q420NE | ≤ 0.2 |
| Q420R | ≤ 0.2 |
| Q460C Indicative | ≤ 0.2 |
| Q460C Indicative | 0.2–0.23 |
| Q460D Indicative | ≤ 0.2 |
| Q460DR | ≤ 0.2 |
| Q460E Indicative | ≤ 0.2 |
| Q460F | ≤ 0.2 |
| Q460MC | ≤ 0.16 |
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Withdrawn — designation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.