KS steel grades — 823 designations — Page 6
Every grade designated under KS, 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. 15 of 50 rows differ and carry an “Indicative” mark.
Also known as
823 designations| Grade | Material no. | Category | C% by weight | Also inother standards |
|---|---|---|---|---|
| SL9N590 | — | Low-temperature structural steels | ≤ 0.12 | 1 |
| SLAI235 | — | Low-temperature structural steels | ≤ 0.15 | — |
| SLAI325 | — | Low-temperature structural steels | ≤ 0.16 | — |
| SLAI360 | — | Low-temperature structural steels | ≤ 0.18 | — |
| SM10C | — | — | 0.08–0.13 | — |
| SM10C Indicative | 1.1121 | Case hardening steels | 0.07–0.13 | 22 |
| SM12C | — | — | 0.1–0.15 | — |
| SM15C | — | — | 0.13–0.18 | — |
| SM15C Indicative | 1.0401 | Case hardening steels | 0.12–0.18 | 23 |
| SM15CK Indicative | 1.0401 | Case hardening steels | 0.12–0.18 | 23 |
| SM17C | — | — | 0.15–0.2 | — |
| SM20C | — | — | 0.18–0.23 | — |
| SM20C Indicative | 1.0402 | Quenched and tempered steels | 0.17–0.24 | 24 |
| SM20CK Indicative | 1.0402 | Quenched and tempered steels | 0.17–0.24 | 24 |
| SM22C | — | — | 0.2–0.25 | — |
| SM22C Indicative | 1.0402 | Quenched and tempered steels | 0.17–0.24 | 24 |
| SM25C | — | — | 0.22–0.28 | — |
| SM25C Indicative | 1.0406 | Quenched and tempered steels | 0.22–0.29 | 20 |
| SM28C | — | — | 0.25–0.31 | — |
| SM28C Indicative | 1.0406 | Quenched and tempered steels | 0.22–0.29 | 20 |
| SM30C | — | — | 0.27–0.33 | — |
| SM33C | — | — | 0.3–0.36 | — |
| SM35C | — | — | 0.32–0.38 | — |
| SM35C Indicative | 1.0501 | Quenched and tempered steels | 0.32–0.39 | 23 |
| SM38C | — | — | 0.35–0.41 | — |
| SM38C Indicative | 1.0501 | Quenched and tempered steels | 0.32–0.39 | 23 |
| SM400A | 1.0144 | Unalloyed structural steels | ≤ 0.18 | 22 |
| SM400B | 1.0490 | Fine-grain structural steels | ≤ 0.18 | 6 |
| SM400C | 1.0144 | Unalloyed structural steels | ≤ 0.18 | 22 |
| SM40C | — | — | 0.37–0.43 | — |
| SM40C Indicative | 1.0511 | Quenched and tempered steels | 0.37–0.44 | 21 |
| SM43C | — | — | 0.4–0.46 | — |
| SM45C | — | — | 0.42–0.48 | — |
| SM45C Indicative | 1.0503 | Quenched and tempered steels | 0.42–0.5 | 24 |
| SM48C | — | — | 0.45–0.51 | — |
| SM48C Indicative | 1.0503 | Quenched and tempered steels | 0.42–0.5 | 24 |
| SM490A | 1.8902 | Fine-grain structural steels | ≤ 0.2 | 19 |
| SM490B | 1.0562 | Fine-grain structural steels | ≤ 0.18 | 18 |
| SM490C | 1.8902 | Fine-grain structural steels | ≤ 0.2 | 19 |
| SM490YA | — | Unalloyed structural steels | ≤ 0.2 | 1 |
| SM490YB | 1.0595 | Others | ≤ 0.2 | 7 |
| SM50C | — | — | 0.47–0.53 | — |
| SM50C Indicative | 1.0535 | Quenched and tempered steels | 0.52–0.6 | 21 |
| SM520B | 1.0596 | Unalloyed structural steels | ≤ 0.2 | 4 |
| SM520C | — | Unalloyed structural steels | ≤ 0.2 | 1 |
| SM53C | 1.0426 | Aging resistant steels | 0.08–0.2 | 17 |
| SM55C | — | — | 0.52–0.58 | — |
| SM55C Indicative | 1.0535 | Quenched and tempered steels | 0.52–0.6 | 21 |
| SM570 | — | Unalloyed structural steels | ≤ 0.18 | 1 |
| SM58C | — | — | 0.55–0.61 | — |
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.