GB steel grades — 1318 designations — Page 17
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. 10 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 |
|---|---|---|---|---|
| GB/T14922-2005 | 2.4683 | Others | 0.05–0.15 | 4 |
| GCr15 | 1.2067 | Tool steels for cold work | 0.95–1.1 | 21 |
| GCr15 | 1.3505 | Bearing steels | 0.93–1.05 | 22 |
| GCr15SiMn | 1.3520 | Bearing steels | 0.93–1.05 | 16 |
| GCr15SiMo This grade’s own name | — | — | 0.95–1.05 | — |
| GCr18Mo This grade’s own name | — | — | 0.95–1.05 | — |
| GCr4 This grade’s own name | — | — | 0.95–1.05 | — |
| GCr9SiMn | 1.3520 | Bearing steels | 0.93–1.05 | 16 |
| GH141 | 2.4973 | Nickel and cobalt alloys | ≤ 0.12 | 5 |
| GH188 | 2.4683 | Others | 0.05–0.15 | 4 |
| GH4080A | 2.4952 | High-temperature steels | 0.04–0.1 | 6 |
| GH4090 | 2.4632 | High-temperature steels / aviation variant | ≤ 0.13 | 5 |
| GH4141 | 2.4973 | Nickel and cobalt alloys | ≤ 0.12 | 5 |
| GH4738 | 2.4654 | Nickel and cobalt alloys | 0.02–0.1 | 6 |
| GH684 | 2.4654 | Nickel and cobalt alloys | 0.02–0.1 | 6 |
| GH738 | 2.4654 | Nickel and cobalt alloys | 0.02–0.1 | 6 |
| GH90 | 2.4632 | High-temperature steels / aviation variant | ≤ 0.13 | 5 |
| Gr15 | 1.3505 | Bearing steels | 0.93–1.05 | 22 |
| H02200 | 2.4066 | Nickel and cobalt alloys | ≤ 0.1 | 10 |
| H02200 | 2.4068 | Nickel and cobalt alloys | ≤ 0.02 | 8 |
| H02201 | 2.4066 | Nickel and cobalt alloys | ≤ 0.1 | 10 |
| H02201 | 2.4068 | Nickel and cobalt alloys | ≤ 0.02 | 8 |
| H05500 | 2.4375 | Nickel and cobalt alloys | ≤ 0.2 | 6 |
| H06007 | 2.4663 | Nickel and cobalt alloys | 0.05–0.1 | 6 |
| H06022 | 2.4602 | Nickel and cobalt alloys | ≤ 0.01 | 5 |
| H06230 | 2.4733 | Others | 0.05–0.15 | 5 |
| H06455 | 2.4610 | Nickel and cobalt alloys | ≤ 0.015 | 3 |
| H06601 | 2.4851 | Heat resistant steels | 0.03–0.1 | 7 |
| H06686 | 2.4606 | Others | ≤ 0.01 | 3 |
| H08020 | 2.4660 | Nickel and cobalt alloys | ≤ 0.07 | 4 |
| H08020 | 1.4527 | Others | ≤ 0.06 | 3 |
| H08120 | 2.4854 | Others | ≤ 0.05 | 1 |
| H08Mn2SiA This grade’s own name | — | — | ≤ 0.11 | — |
| H08MnA This grade’s own name | — | — | ≤ 0.1 | — |
| H0Cr20Ni10Ti | 1.4541 | Stainless steels | ≤ 0.08 | 25 |
| H10Mn2 This grade’s own name | — | — | ≤ 0.12 | — |
| H15A | 1.0401 | Case hardening steels | 0.12–0.18 | 23 |
| hard alloy | — | — | — | 3 |
| HG5188 | 2.4683 | Others | 0.05–0.15 | 4 |
| HNS3103 | 2.4851 | Heat resistant steels | 0.03–0.1 | 7 |
| HNS3304 | 2.4663 | Nickel and cobalt alloys | 0.05–0.1 | 6 |
| HNS3312 | 2.4665 | High-temperature steels | 0.05–0.15 | 11 |
| HP235 This grade’s own name | — | — | ≤ 0.16 | — |
| HP325 This grade’s own name | — | — | ≤ 0.2 | — |
| HP345 | 1.0570 | Unalloyed structural steels | ≤ 0.2 | 22 |
| HP345 | 1.0570 | Unalloyed structural steels | ≤ 0.2 | 20 |
| HPB300 This grade’s own name | — | — | ≤ 0.25 | — |
| HRB335 | 1.0060 | Unalloyed structural steels | — | 21 |
| HRB335 | 1.0060 | Unalloyed structural steels | — | 21 |
| HRB400 This grade’s own name | — | — | ≤ 0.25 | — |
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.