KS steel grades — 823 designations — Page 15
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. 3 of 50 rows differ and carry an “Indicative” mark.
Also known as
823 designations| Grade | Category | C% by weight | Also inother standards |
|---|---|---|---|
| STSXM8TB | Stainless steels | — | — |
| STSY16-8-2 | — | ≤ 0.1 | — |
| STSY308 | — | ≤ 0.08 | — |
| STSY308L | — | ≤ 0.03 | — |
| STSY309 | — | ≤ 0.12 | — |
| STSY309L | — | ≤ 0.03 | — |
| STSY309Mo | — | ≤ 0.12 | — |
| STSY310 | — | ≤ 0.15 | — |
| STSY310S | — | ≤ 0.08 | — |
| STSY312 | — | ≤ 0.15 | — |
| STSY316 | — | ≤ 0.08 | — |
| STSY316J1L | — | ≤ 0.03 | — |
| STSY316L | — | ≤ 0.03 | — |
| STSY317 | — | ≤ 0.08 | — |
| STSY317L | — | ≤ 0.03 | — |
| STSY410 | — | ≤ 0.12 | — |
| STSY430 | — | ≤ 0.1 | — |
| SUM11 | Free cutting steels | 0.08–0.13 | 1 |
| SUM12 | Free cutting steels | 0.08–0.13 | 1 |
| SUM21 | Free cutting steels | ≤ 0.12 | 6 |
| SUM22 | Free cutting steels | ≤ 0.14 | 14 |
| SUM22L | Free cutting steels | ≤ 0.14 | 11 |
| SUM23 | Free cutting steels | ≤ 0.14 | 14 |
| SUM23L | Free cutting steels | ≤ 0.09 | 1 |
| SUM24L | Free cutting steels | ≤ 0.14 | 11 |
| SUM25 | Free cutting steels | ≤ 0.14 | 11 |
| SUM31 | Free cutting steels | 0.12–0.18 | 5 |
| SUM31L | Free cutting steels | 0.14–0.2 | 1 |
| SUM32 | Free cutting steels | 0.12–0.2 | 1 |
| SUM41 | Free cutting steels | 0.32–0.39 | 4 |
| SUM42 | Free cutting steels | 0.37–0.45 | 1 |
| SUM43 | Free cutting steels | 0.4–0.48 | 20 |
| SUP10-CSP | Spring steels | 0.47–0.55 | 1 |
| SUP10M | — | 0.47–0.55 | 1 |
| SUP6M | — | 0.56–0.64 | 1 |
| SUP9M | — | 0.52–0.6 | 1 |
| SUS304 Indicative | Stainless steels | ≤ 0.07 | 23 |
| SV330 | — | — | — |
| SV400 | — | — | — |
| SWCH10A Indicative | — | 0.08–0.13 | 5 |
| SWCH20K Indicative | — | 0.18–0.23 | 5 |
| SWO-A | Spring steels | 0.53–0.88 | 1 |
| SWO-B | Spring steels | 0.53–0.88 | 1 |
| SWO-V | Spring steels | 0.6–0.75 | 1 |
| SWOCV-V | Spring steels | 0.45–0.55 | 1 |
| SWOSC-B | Spring steels | 0.51–0.59 | 1 |
| SWOSC-V | Spring steels | 0.51–0.59 | 1 |
| SWOSM | Spring steels | 0.56–0.64 | 1 |
| SWP400 | Unalloyed structural steels | ≤ 0.25 | — |
| SWP600 | Unalloyed structural steels | ≤ 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.






