JIS steel grades — 2322 designations — Page 28
Every grade designated under JIS, 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. 17 of 50 rows differ and carry an “Indicative” mark.
Also known as
2322 designations| Grade | Material no. | Category | C% by weight | Also inother standards |
|---|---|---|---|---|
| STAM440H | — | Unalloyed structural steels | ≤ 0.25 | — |
| STAM470G | — | Unalloyed structural steels | ≤ 0.25 | — |
| STAM470H | — | Unalloyed structural steels | ≤ 0.25 | — |
| STAM500G | — | Unalloyed structural steels | ≤ 0.3 | — |
| STAM500H | — | Unalloyed structural steels | ≤ 0.3 | — |
| STAM540H | — | Unalloyed structural steels | ≤ 0.3 | — |
| STB340 | — | — | ≤ 0.18 | — |
| STB340 Indicative | 1.0301 | Case hardening steels | 0.07–0.13 | 20 |
| STB410 | — | — | ≤ 0.32 | — |
| STB410 Indicative | 1.0402 | Quenched and tempered steels | 0.17–0.24 | 24 |
| STB410 Indicative | 1.0436 | Fine-grain structural steels | 0.15–0.2 | 14 |
| STB410 Indicative | 1.1155 | Others | 0.2–0.28 | 6 |
| STB510 | — | — | ≤ 0.25 | — |
| STB510 Indicative | 1.1133 | Quenched and tempered steels | 0.17–0.23 | 20 |
| STBA12 | — | — | 0.1–0.2 | — |
| STBA12 Indicative | 1.5415 | Heat-resistant structural steels | 0.12–0.2 | 15 |
| STBA13 | — | — | 0.15–0.25 | — |
| STBA20 | — | — | 0.1–0.2 | — |
| STBA20 Indicative | 1.7262 | Case hardening steels | 0.13–0.17 | 18 |
| STBA20 Indicative | 1.7335 | Heat-resistant structural steels | 0.08–0.18 | 22 |
| STBA22 | — | — | ≤ 0.15 | — |
| STBA22 Indicative | 1.7262 | Case hardening steels | 0.13–0.17 | 18 |
| STBA22 Indicative | 1.7335 | Heat-resistant structural steels | 0.08–0.18 | 22 |
| STBA23 | — | — | ≤ 0.15 | — |
| STBA24 | — | — | ≤ 0.15 | — |
| STBA25 | — | — | ≤ 0.15 | — |
| STBA25 Indicative | 1.7362 | Hydrogen resistant steels | 0.1–0.15 | 13 |
| STBA26 | — | — | ≤ 0.15 | — |
| STBA26 Indicative | 1.7386 | Hydrogen resistant steels | 0.08–0.15 | 6 |
| STBL380 | — | Low-temperature structural steels | ≤ 0.25 | — |
| STBL450 | — | Low-temperature structural steels | ≤ 0.18 | — |
| STBL690 | — | Low-temperature structural steels | ≤ 0.13 | — |
| STC370 | — | Unalloyed structural steels | ≤ 0.25 | — |
| STC42 Indicative | 1.7337 | Heat-resistant structural steels | 0.13–0.2 | 9 |
| STC440 | — | Unalloyed structural steels | ≤ 0.25 | — |
| STC48 Indicative | 1.7362 | Hydrogen resistant steels | 0.1–0.15 | 13 |
| STC510A | — | Unalloyed structural steels | ≤ 0.25 | — |
| STC510B | — | Unalloyed structural steels | ≤ 0.18 | — |
| STC52C Indicative | 1.4300 | Stainless steels | ≤ 0.12 | 15 |
| STC540 | — | Unalloyed structural steels | ≤ 0.25 | — |
| STC590A | — | Unalloyed structural steels | ≤ 0.25 | — |
| STC590B | — | Unalloyed structural steels | ≤ 0.25 | — |
| STF410 | — | — | ≤ 0.3 | — |
| STFA12 | — | — | 0.1–0.2 | — |
| STFA22 | — | — | ≤ 0.15 | — |
| STFA22 Indicative | 1.7262 | Case hardening steels | 0.13–0.17 | 18 |
| STFA22 Indicative | 1.7335 | Heat-resistant structural steels | 0.08–0.18 | 22 |
| STFA23 | — | — | ≤ 0.15 | — |
| STFA24 | — | — | ≤ 0.15 | — |
| STFA25 | — | — | ≤ 0.15 | — |
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.