KS steel grades — 823 designations — Page 4
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. 2 of 50 rows differ and carry an “Indicative” mark.
Also known as
823 designations| Grade | Category | C% by weight | Also inother standards |
|---|---|---|---|
| SF390A | Unalloyed structural steels | ≤ 0.6 | 1 |
| SF440A | Unalloyed structural steels | ≤ 0.6 | 1 |
| SF490A | Unalloyed structural steels | ≤ 0.6 | 1 |
| SF540A | Unalloyed structural steels | ≤ 0.6 | 1 |
| SF540B | Unalloyed structural steels | ≤ 0.6 | 1 |
| SF590A | Unalloyed structural steels | ≤ 0.6 | 1 |
| SF590B | Unalloyed structural steels | ≤ 0.6 | 1 |
| SF640B | Unalloyed structural steels | ≤ 0.6 | 1 |
| SFB1 | Unalloyed structural steels | 0.05–0.2 | 1 |
| SFB2 | Unalloyed structural steels | 0.1–0.25 | 1 |
| SFB3 | Unalloyed structural steels | 0.15–0.3 | 1 |
| SFB4 | Unalloyed structural steels | 0.2–0.38 | 1 |
| SFB5 | Unalloyed structural steels | 0.28–0.45 | 1 |
| SFB6 | Unalloyed structural steels | 0.35–0.5 | 1 |
| SFB7 | Unalloyed structural steels | 0.4–0.6 | 1 |
| SFL1 | Low-temperature structural steels | ≤ 0.3 | 1 |
| SFL2 | Low-temperature structural steels | ≤ 0.3 | 1 |
| SFL3 | Low-temperature structural steels | ≤ 0.2 | 1 |
| SFVAF1 | — | ≤ 0.3 | 1 |
| SFVAF11A | — | ≤ 0.2 | 1 |
| SFVAF11B | — | ≤ 0.2 | 1 |
| SFVAF12 | — | ≤ 0.2 | 1 |
| SFVAF12 Indicative | Case hardening steels | 0.13–0.17 | 18 |
| SFVAF12 Indicative | Heat-resistant structural steels | 0.08–0.18 | 22 |
| SFVAF2 | — | ≤ 0.2 | 1 |
| SFVAF21A | — | ≤ 0.15 | 1 |
| SFVAF21B | — | ≤ 0.15 | 1 |
| SFVAF22A | — | ≤ 0.15 | 1 |
| SFVAF22B | — | ≤ 0.15 | 1 |
| SFVAF5A | — | ≤ 0.15 | 1 |
| SFVAF5B | — | ≤ 0.15 | 1 |
| SFVAF5C | — | ≤ 0.25 | 1 |
| SFVAF5D | — | ≤ 0.25 | 1 |
| SFVAF9 | — | ≤ 0.15 | 1 |
| SFVC1 | — | ≤ 0.3 | 1 |
| SFVC2A | — | ≤ 0.35 | 1 |
| SFVC2B | — | ≤ 0.3 | 1 |
| SFVCMF22B | — | ≤ 0.17 | 1 |
| SFVCMF22V | — | ≤ 0.17 | 1 |
| SFVCMF3V | — | ≤ 0.17 | 1 |
| SFVQ1A | Quenched and tempered steels | ≤ 0.25 | 1 |
| SFVQ1B | Quenched and tempered steels | ≤ 0.25 | 1 |
| SFVQ2A | Quenched and tempered steels | ≤ 0.27 | 1 |
| SFVQ2B | Quenched and tempered steels | ≤ 0.27 | 1 |
| SFVQ3 | Quenched and tempered steels | ≤ 0.23 | 1 |
| SG255 | — | ≤ 0.2 | 1 |
| SG295 | — | ≤ 0.2 | 1 |
| SG325 | — | ≤ 0.2 | 1 |
| SG365 | — | ≤ 0.2 | 1 |
| SGD1 | Unalloyed structural steels | ≤ 0.1 | 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.