KS steel grades — 823 designations — Page 8
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. 12 of 50 rows differ and carry an “Indicative” mark.
Also known as
823 designations| Grade | Category | C% by weight | Also inother standards |
|---|---|---|---|
| SPS12 | — | 0.51–0.59 | — |
| SPS13 | — | 0.56–0.64 | — |
| SPS290 | Unalloyed structural steels | — | — |
| SPS400 | Unalloyed structural steels | ≤ 0.25 | — |
| SPS490 | Unalloyed structural steels | ≤ 0.18 | — |
| SPS5 Indicative | Spring steels | 0.52–0.59 | 18 |
| SPS500 | Unalloyed structural steels | ≤ 0.24 | — |
| SPS540 | Unalloyed structural steels | ≤ 0.23 | — |
| SPS5A Indicative | Spring steels | 0.52–0.59 | 18 |
| SPS6 | — | 0.56–0.64 | — |
| SPS6 Indicative | Quenched and tempered steels | 0.47–0.55 | 27 |
| SPS7 | — | 0.56–0.64 | — |
| SPS9 | — | 0.52–0.6 | — |
| SPS9A | — | 0.56–0.64 | — |
| SQV1A | Quenched and tempered steels | ≤ 0.25 | 1 |
| SQV1B | Quenched and tempered steels | ≤ 0.25 | 1 |
| SQV2A | Quenched and tempered steels | ≤ 0.25 | 1 |
| SQV2B | Quenched and tempered steels | ≤ 0.25 | 1 |
| SQV3A | Quenched and tempered steels | ≤ 0.25 | 1 |
| SQV3B | Quenched and tempered steels | ≤ 0.25 | 1 |
| SR240 | Unalloyed structural steels | — | — |
| SR300 | Unalloyed structural steels | — | — |
| SS330 | Unalloyed structural steels | — | 22 |
| SS330 | Unalloyed structural steels | ≤ 0.15 | 18 |
| SS400 | Unalloyed structural steels | — | 1 |
| SS490 | Unalloyed structural steels | — | 1 |
| SS490 Indicative | Unalloyed structural steels | — | 23 |
| SS490 Indicative | Unalloyed structural steels | — | 23 |
| SS540 | Unalloyed structural steels | ≤ 0.3 | 1 |
| SS590 | Unalloyed structural steels | ≤ 0.3 | — |
| SSC12 Indicative | Cast stainless steels | ≤ 0.12 | 15 |
| SSC13A | Heat-resistant cast steels | ≤ 0.08 | — |
| SSC13A Indicative | Cast stainless steels | ≤ 0.12 | 15 |
| SSC14A | Heat-resistant cast steels | ≤ 0.08 | — |
| SSC16A | Heat-resistant cast steels | ≤ 0.03 | — |
| SSC17 | Heat-resistant cast steels | ≤ 0.2 | — |
| SSC17 Indicative | Heat-resistant cast steels | 0.3–0.5 | 13 |
| SSC18 | Heat-resistant cast steels | ≤ 0.02 | — |
| SSC19A | Heat-resistant cast steels | ≤ 0.03 | — |
| SSC2 Indicative | Cast stainless steels | 0.16–0.23 | 14 |
| SSC21 | Heat-resistant cast steels | — | — |
| SSC23 | Heat-resistant cast steels | ≤ 0.07 | — |
| STB1 | — | 0.95–1.1 | — |
| STB2 | — | 0.95–1.1 | — |
| STB2 Indicative | Bearing steels | 0.93–1.05 | 22 |
| STB2 Indicative | Tool steels for cold work | 0.95–1.1 | 21 |
| STB3 | — | 0.95–1.1 | — |
| STB4 | Bearing steels | 0.95–1.1 | — |
| STB4 Indicative | Bearing steels | 0.93–1.05 | 22 |
| STB5 | Bearing steels | 0.95–1.1 | — |
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.