KS steel grades — 823 designations — Page 5
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 |
|---|---|---|---|
| SGD2 | Unalloyed structural steels | 0.1–0.15 | 1 |
| SGD3 | Unalloyed structural steels | 0.15–0.2 | 1 |
| SGD4 | Unalloyed structural steels | 0.2–0.25 | 1 |
| SGDA | Unalloyed structural steels | — | 1 |
| SGDB | Unalloyed structural steels | — | 1 |
| SGV410 | — | ≤ 0.27 | 1 |
| SGV450 | — | ≤ 0.29 | 1 |
| SGV480 | — | ≤ 0.31 | 1 |
| SK2M | — | 1.1–1.3 | — |
| SK3M | — | 1–1.1 | — |
| SK4M | — | 0.9–1 | — |
| SK5M | — | 0.8–0.9 | — |
| SK6M | — | 0.7–0.8 | — |
| SK7M | — | 0.6–0.7 | — |
| SK85-CSP | Spring steels | 0.8–0.9 | — |
| SK95-CSP | Spring steels | 0.9–1 | — |
| SKC11 | Tool steels for cold work | 0.75–0.85 | 13 |
| SKC24 | — | 0.33–0.43 | — |
| SKC3 | Unalloyed tool steels / carbon steels | 0.75–0.85 | 15 |
| SKC31 | — | 0.12–0.25 | — |
| SKH10 | High-speed steels | 1.3–1.45 | 12 |
| SKH2 | High-speed steels | 0.73–0.83 | 22 |
| SKH3 | High-speed steels | 0.75–0.83 | 14 |
| SKH4 | High-speed steels | 0.72–0.8 | 6 |
| SKH40 | High-speed steels | 1.23–1.33 | 1 |
| SKH50 | High-speed steels | 0.77–0.87 | 1 |
| SKH51 | High-speed steels | 0.86–0.94 | 19 |
| SKH51 | High-speed steels | 0.8–0.88 | 16 |
| SKH52 | High-speed steels | 1–1.1 | 2 |
| SKH53 | High-speed steels | 1.15–1.25 | 1 |
| SKH53 Indicative | — | 1.25–1.32 | 4 |
| SKH54 | High-speed steels | 1.25–1.4 | 4 |
| SKH55 | High-speed steels | 0.87–0.95 | 19 |
| SKH56 | High-speed steels | 0.85–0.95 | 1 |
| SKH57 | High-speed steels | 1.2–1.35 | 1 |
| SKH58 | High-speed steels | 0.95–1.05 | 8 |
| SKH59 | High-speed steels | 1.05–1.15 | 14 |
| SKH9 Indicative | High-speed steels | 0.8–0.88 | 16 |
| SKS2M | — | 1–1.1 | 1 |
| SKS41 Indicative | — | 0.35–0.45 | 5 |
| SKS51M | — | 0.75–0.85 | 1 |
| SKS5M | — | 0.75–0.85 | 1 |
| SKS7M | — | 1.1–1.2 | 1 |
| SKS95M | — | 0.8–0.9 | 1 |
| SL2N255 | Low-temperature structural steels | ≤ 0.17 | 1 |
| SL3N255 | Low-temperature structural steels | ≤ 0.15 | 1 |
| SL3N275 | Low-temperature structural steels | ≤ 0.17 | 1 |
| SL3N440 | Low-temperature structural steels | ≤ 0.15 | 1 |
| SL5N590 | Low-temperature structural steels | ≤ 0.13 | 1 |
| SL9N520 | Low-temperature structural steels | ≤ 0.12 | 1 |
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.