--- title: "KS steel grades — 823 designations — Page 3" description: "Steel grades designated under KS, with chemical composition, mechanical properties and equivalents in other standards. 823 designations across 764…" canonical: https://steelequivalents.com/materials/ks/page/3 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/ks/page/3.md cs: https://steelequivalents.com/cs/materiály/ks.md de: https://steelequivalents.com/de/werkstoffe/ks.md es: https://steelequivalents.com/es/materiales/ks.md fr: https://steelequivalents.com/fr/matériaux/ks.md hu: https://steelequivalents.com/hu/anyagok/ks.md it: https://steelequivalents.com/it/materiali/ks.md nl: https://steelequivalents.com/nl/materialen/ks.md pl: https://steelequivalents.com/pl/materiały/ks.md pt: https://steelequivalents.com/pt/materiais/ks.md ru: https://steelequivalents.com/ru/материалы/ks.md tr: https://steelequivalents.com/tr/malzemeler/ks.md zh: https://steelequivalents.com/zh/材料/ks.md ja: https://steelequivalents.com/ja/材料/ks.md ar: https://steelequivalents.com/ar/المواد/ks.md ko: https://steelequivalents.com/ko/재료/ks.md pt-br: https://steelequivalents.com/pt-br/materiais/ks.md hi: https://steelequivalents.com/hi/सामग्री/ks.md content_hash: sha256:6566900894e11b918c4b421fc7561dd76a342ab4d66926c679e8a90bab98d62f generated: 2026-09-22 --- > **Machine-readable Markdown rendering.** This is a Markdown representation of a web page, > served for AI agents and crawlers as a token-efficient alternative to the full HTML. > Full interactive HTML version: https://steelequivalents.com/materials/ks/page/3 > Canonical URL: https://steelequivalents.com/materials/ks/page/3 > Available languages: en, cs, de, es, fr, hu, it, nl, pl, pt, ru, tr, zh, ja, ar, ko, pt-br, hi > Change detection: `content_hash` is the SHA-256 of this document's Markdown body — everything > below this block, whitespace-trimmed, excluding the front-matter. Compare it to detect a real > content change; `generated` moves on every render and is not a change signal. KS · 823 grades # KS steel grades — 823 designations — Page 3 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. 16 of 50 rows differ and carry an “Indicative” mark. ## Also known as 823 designations | Grade | Category | C% by weight | Also in other standards | |---|---|---|---| | [SCM430](/materials/ks/scm430 "SCM430") Indicative | Quenched and tempered steels | 0.22–0.29 | 25 | | [SCM430M](/materials/jis/scm430m "SCM430M") | — | 0.28–0.33 | 1 | | [SCM432](/materials/ks/scm432 "SCM432") Indicative | Quenched and tempered steels | 0.3–0.37 | 24 | | [SCM435](/materials/ks/scm435 "SCM435") Indicative | Quenched and tempered steels | 0.3–0.37 | 24 | | [SCM435H](/materials/jis/scm435h "SCM435H") Indicative | Quenched and tempered steels | 0.3–0.37 | 24 | | [SCM435M](/materials/jis/scm435m "SCM435M") | — | 0.33–0.38 | 1 | | [SCM435TK](/materials/jis/scm435tk "SCM435TK") Indicative | Quenched and tempered steels | 0.3–0.37 | 24 | | [SCM440M](/materials/jis/scm440m "SCM440M") | — | 0.38–0.43 | 1 | | [SCM721](/materials/ks/scm721 "SCM721") | — | 0.22–0.29 | — | | [SCM722](/materials/ks/scm722 "SCM722") | — | 0.3–0.37 | — | | [SCM725](/materials/ks/scm725 "SCM725") | — | 0.38–0.45 | — | | [SCMn2](/materials/jis/scmn2 "SCMn2") Indicative | Quenched and tempered steels | 0.25–0.32 | 16 | | [SCMn3](/materials/jis/scmn3 "SCMn3") Indicative | Quenched and tempered steels | 0.32–0.4 | 17 | | [SCMnH1](/materials/jis/scmnh1 "SCMnH1") Indicative | Quenched and tempered steels | 1.1–1.3 | 19 | | [SCMQ4E](/materials/jis/scmq4e "SCMQ4E") | — | ≤ 0.17 | 1 | | [SCMQ4V](/materials/jis/scmq4v "SCMQ4V") | — | ≤ 0.17 | 1 | | [SCMQ5V](/materials/jis/scmq5v "SCMQ5V") | — | ≤ 0.17 | 1 | | [SCMV1](/materials/jis/scmv1 "SCMV1") | — | ≤ 0.21 | 1 | | [SCMV2](/materials/jis/scmv2 "SCMV2") | — | ≤ 0.17 | 1 | | [SCMV3](/materials/jis/scmv3 "SCMV3") | — | ≤ 0.17 | 1 | | [SCMV4](/materials/jis/scmv4 "SCMV4") | — | ≤ 0.17 | 1 | | [SCMV5](/materials/jis/scmv5 "SCMV5") | — | ≤ 0.17 | 1 | | [SCMV6](/materials/jis/scmv6 "SCMV6") | — | ≤ 0.15 | 1 | | [SCPH11](/materials/jis/scph11 "SCPH11") | Cast steel | ≤ 0.25 | 1 | | [SCPH21](/materials/jis/scph21 "SCPH21") | Cast steel | ≤ 0.2 | 1 | | [SCPH32](/materials/jis/scph32 "SCPH32") | Cast steel | ≤ 0.2 | 1 | | [SCPH61](/materials/jis/scph61 "SCPH61") | Cast steel | ≤ 0.2 | 1 | | [SCr415](/materials/ks/scr415 "SCr415") Indicative | Case hardening steels | 0.12–0.18 | 15 | | [SCr415H](/materials/ks/scr415h "SCr415H") Indicative | Case hardening steels | 0.12–0.18 | 15 | | [SCr420M](/materials/jis/scr420m "SCr420M") | — | 0.18–0.23 | 1 | | [SCr430](/materials/ks/scr430 "SCr430") Indicative | Quenched and tempered steels | 0.3–0.37 | 18 | | [SCr430H](/materials/jis/scr430h "SCr430H") Indicative | Quenched and tempered steels | 0.3–0.37 | 18 | | [SCr435](/materials/ks/scr435 "SCr435") Indicative | Quenched and tempered steels | 0.34–0.41 | 23 | | [SCr435H](/materials/ks/scr435h "SCr435H") Indicative | Quenched and tempered steels | 0.34–0.41 | 23 | | [SCr435M](/materials/jis/scr435m "SCr435M") | — | 0.33–0.38 | 1 | | [SCr440](/materials/ks/scr440 "SCr440") Indicative | Quenched and tempered steels | 0.34–0.41 | 23 | | [SCr440H](/materials/ks/scr440h "SCr440H") Indicative | Quenched and tempered steels | 0.34–0.41 | 23 | | [SCr440M](/materials/jis/scr440m "SCr440M") | — | 0.38–0.43 | 1 | | [SD300](/materials/ks/sd300 "SD300") | Unalloyed structural steels | — | — | | [SD350](/materials/ks/sd350 "SD350") | Unalloyed structural steels | — | — | | [SD400](/materials/ks/sd400 "SD400") | Unalloyed structural steels | — | — | | [SD400W](/materials/ks/sd400w "SD400W") | Unalloyed structural steels | — | — | | [SD500](/materials/ks/sd500 "SD500") | Unalloyed structural steels | — | — | | [SD500W](/materials/ks/sd500w "SD500W") | Unalloyed structural steels | — | — | | [SD600](/materials/ks/sd600 "SD600") | Unalloyed structural steels | — | — | | [SD700](/materials/ks/sd700 "SD700") | Unalloyed structural steels | — | — | | [SEV245](/materials/jis/sev245 "SEV245") | High-strength steels | ≤ 0.2 | 1 | | [SEV295](/materials/jis/sev295 "SEV295") | High-strength steels | ≤ 0.19 | 1 | | [SEV345](/materials/jis/sev345 "SEV345") | High-strength steels | ≤ 0.19 | 1 | | [SF340A](/materials/jis/sf340a "SF340A") | Unalloyed structural steels | ≤ 0.6 | 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. [Previous](/materials/ks/page/2 "Previous") Page 3 of 17[Next](/materials/ks/page/4 "Next")