GB steel grades — 1318 designations — Page 23
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. 2 of 50 rows differ and carry an “Indicative” mark.
Also known as
1318 designations| Grade | C% by weight |
|---|---|
| Q460MD | ≤ 0.16 |
| Q460ME | ≤ 0.16 |
| Q460NC | ≤ 0.2 |
| Q460ND | ≤ 0.2 |
| Q460NE | ≤ 0.2 |
| Q460NH | ≤ 0.12 |
| Q460R | ≤ 0.2 |
| Q500C | ≤ 0.2 |
| Q500D | ≤ 0.2 |
| Q500E | ≤ 0.2 |
| Q500F | ≤ 0.2 |
| Q500MC | ≤ 0.18 |
| Q500MD | ≤ 0.18 |
| Q500ME | ≤ 0.18 |
| Q550C | ≤ 0.2 |
| Q550D | ≤ 0.2 |
| Q550E | ≤ 0.2 |
| Q550F | ≤ 0.2 |
| Q550MC | ≤ 0.18 |
| Q550MD | ≤ 0.18 |
| Q550ME | ≤ 0.18 |
| Q550NH | ≤ 0.16 |
| Q620C | ≤ 0.2 |
| Q620D | ≤ 0.2 |
| Q620E | ≤ 0.2 |
| Q620F | ≤ 0.2 |
| Q620MC | ≤ 0.18 |
| Q620MD | ≤ 0.18 |
| Q620ME | ≤ 0.18 |
| Q690C | ≤ 0.2 |
| Q690D | ≤ 0.2 |
| Q690E | ≤ 0.2 |
| Q690F | ≤ 0.2 |
| Q690MC | ≤ 0.18 |
| Q690MD | ≤ 0.18 |
| Q690ME | ≤ 0.18 |
| Q800C | ≤ 0.2 |
| Q800D | ≤ 0.2 |
| Q800E | ≤ 0.2 |
| Q800F | ≤ 0.2 |
| Q890C | ≤ 0.2 |
| Q890D | ≤ 0.2 |
| Q890E | ≤ 0.2 |
| Q890F | ≤ 0.2 |
| Q960C | ≤ 0.2 |
| Q960D | ≤ 0.2 |
| Q960E | ≤ 0.2 |
| Q960F | ≤ 0.2 |
| QT400-15 Indicative | — |
| QT400-15 Indicative | — |
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Withdrawn — designation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.