KS steel grades — 823 designations — Page 11
Every grade designated under KS, 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. 7 of 50 rows differ and carry an “Indicative” mark.
Also known as
823 designations| Grade | Category | C% by weight |
|---|---|---|
| STR309 | Heat resistant steels | ≤ 0.2 |
| STR309 Indicative | Heat resistant steels | ≤ 0.2 |
| STR31 | Heat resistant steels | 0.35–0.45 |
| STR310 | Heat resistant steels | ≤ 0.25 |
| STR330 | Heat resistant steels | ≤ 0.15 |
| STR35 | Heat resistant steels | 0.48–0.58 |
| STR35 Indicative | Valve steels | 0.48–0.58 |
| STR36 | Heat resistant steels | 0.48–0.58 |
| STR36 Indicative | Valve steels | 0.48–0.58 |
| STR37 | Heat resistant steels | 0.15–0.25 |
| STR38 | Heat resistant steels | 0.25–0.35 |
| STR4 | Heat resistant steels | 0.75–0.85 |
| STR409 | Heat resistant steels | — |
| STR409L | Heat resistant steels | — |
| STR446 | Heat resistant steels | ≤ 0.2 |
| STR600 | Heat resistant steels | 0.15–0.2 |
| STR616 | Heat resistant steels | 0.2–0.25 |
| STR660 | Heat resistant steels | ≤ 0.08 |
| STR661 | Heat resistant steels | 0.08–0.16 |
| STS11 | — | 1.2–1.3 |
| STS2 | — | 1–1.1 |
| STS2 Indicative | Tool steels for cold work | 1–1.1 |
| STS201 | Stainless steels | ≤ 0.15 |
| STS201 Indicative | Others | ≤ 0.15 |
| STS201 Indicative | Non-magnetic steels | ≤ 0.15 |
| STS202 | Stainless steels | ≤ 0.15 |
| STS21 | — | 1–1.1 |
| STS3 | — | 0.9–1 |
| STS3 Indicative | Tool steels for cold work | 1–1.1 |
| STS301 | Stainless steels | ≤ 0.15 |
| STS302 | Stainless steels | ≤ 0.15 |
| STS302B | — | ≤ 0.15 |
| STS302FB | — | ≤ 0.15 |
| STS303 | Stainless steels | ≤ 0.15 |
| STS303Cu | Stainless steels | ≤ 0.15 |
| STS303Se | Stainless steels | ≤ 0.15 |
| STS304 | Stainless steels | ≤ 0.08 |
| STS304CA | Stainless steels | ≤ 0.08 |
| STS304FB | — | ≤ 0.08 |
| STS304HFB | — | 0.04–0.1 |
| STS304HTB | Stainless steels | 0.04–0.1 |
| STS304J3 | Stainless steels | ≤ 0.08 |
| STS304L | Stainless steels | ≤ 0.03 |
| STS304LCA | Stainless steels | ≤ 0.03 |
| STS304LFB | — | ≤ 0.03 |
| STS304LN | Stainless steels | ≤ 0.03 |
| STS304LTB | Stainless steels | ≤ 0.03 |
| STS304LTBS | Stainless steels | ≤ 0.03 |
| STS304N1 | Stainless steels | ≤ 0.08 |
| STS304N2 | Stainless steels | ≤ 0.08 |
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.