--- title: "KS steel grades — 823 designations — Page 2" 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/2 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/ks/page/2.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: sha256:9d9c3d67659d17174dded25a439902fb05cde1dca6e7b813e472ee3ab3e1cb23 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/2 > Canonical URL: https://steelequivalents.com/materials/ks/page/2 > 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 2 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. 9 of 50 rows differ and carry an “Indicative” mark. ## Also known as 823 designations | Grade | Category | C% by weight | Also in other standards | |---|---|---|---| | [NCF750](/materials/jis/ncf750 "NCF750") | Nickel and cobalt alloys | ≤ 0.08 | 1 | | [NCF751](/materials/jis/ncf751 "NCF751") | Nickel and cobalt alloys | ≤ 0.1 | 1 | | [NCF800](/materials/jis/ncf800 "NCF800") | Nickel and cobalt alloys | ≤ 0.1 | 1 | | [NCF800H](/materials/jis/ncf800h "NCF800H") | Nickel and cobalt alloys | 0.05–0.1 | 1 | | [NCF800HTB](/materials/jis/ncf800htb "NCF800HTB") | Nickel and cobalt alloys | 0.05–0.1 | 1 | | [NCF800HTP](/materials/jis/ncf800htp "NCF800HTP") | Nickel and cobalt alloys | 0.05–0.1 | 1 | | [NCF800TB](/materials/jis/ncf800tb "NCF800TB") | Nickel and cobalt alloys | ≤ 0.1 | 1 | | [NCF800TP](/materials/jis/ncf800tp "NCF800TP") | Nickel and cobalt alloys | ≤ 0.1 | 1 | | [NCF80A](/materials/jis/ncf80a "NCF80A") | Nickel and cobalt alloys | 0.04–0.1 | 1 | | [NCF825](/materials/jis/ncf825 "NCF825") | Nickel and cobalt alloys | ≤ 0.05 | 1 | | [NCF825HTB](/materials/ks/ncf825htb "NCF825HTB") | Nickel and cobalt alloys | — | — | | [NCF825TP](/materials/jis/ncf825tp "NCF825TP") | Nickel and cobalt alloys | ≤ 0.05 | 1 | | [Nimonic80A](/materials/ks/nimonic80a "Nimonic80A") | Nickel and cobalt alloys | — | — | | [S30CM](/materials/jis/s30cm "S30CM") | — | 0.27–0.33 | 1 | | [S35CM](/materials/jis/s35cm "S35CM") | — | 0.32–0.38 | 1 | | [S45CM](/materials/jis/s45cm "S45CM") | — | 0.42–0.48 | 1 | | [S50C-CSP](/materials/jis/s50c-csp "S50C-CSP") | Spring steels | 0.47–0.53 | 1 | | [S50CM](/materials/jis/s50cm "S50CM") | — | 0.47–0.53 | 1 | | [S55C-CSP](/materials/jis/s55c-csp "S55C-CSP") | Spring steels | 0.52–0.58 | 1 | | [S55CM](/materials/jis/s55cm "S55CM") | — | 0.52–0.58 | 1 | | [S60C-CSP](/materials/jis/s60c-csp "S60C-CSP") | Spring steels | 0.55–0.65 | 1 | | [S60CM](/materials/jis/s60cm "S60CM") | — | 0.55–0.65 | 1 | | [S65C-CSP](/materials/jis/s65c-csp "S65C-CSP") | Spring steels | 0.6–0.7 | 1 | | [S65CM](/materials/jis/s65cm "S65CM") | — | 0.6–0.7 | 1 | | [S70C-CSP](/materials/jis/s70c-csp "S70C-CSP") | Spring steels | 0.65–0.75 | 1 | | [S70CM](/materials/jis/s70cm "S70CM") | — | 0.65–0.75 | 1 | | [S75CM](/materials/jis/s75cm "S75CM") | — | 0.7–0.8 | 1 | | [SACM645](/materials/jis/sacm645 "SACM645") Indicative | Nitriding steels | 0.38–0.45 | 16 | | [SAPH310](/materials/jis/saph310 "SAPH310") | Sheet metal and slit strip | — | 1 | | [SAPH370](/materials/jis/saph370 "SAPH370") | Sheet metal and slit strip | — | 1 | | [SAPH400](/materials/jis/saph400 "SAPH400") | Sheet metal and slit strip | — | 1 | | [SAPH440](/materials/jis/saph440 "SAPH440") | Sheet metal and slit strip | — | 1 | | [SB410](/materials/jis/sb410 "SB410") | — | ≤ 0.3 | 1 | | [SB450](/materials/jis/sb450 "SB450") | — | ≤ 0.33 | 1 | | [SB450M](/materials/jis/sb450m "SB450M") | — | ≤ 0.25 | 1 | | [SB480](/materials/jis/sb480 "SB480") | — | ≤ 0.35 | 1 | | [SB480M](/materials/jis/sb480m "SB480M") | — | ≤ 0.27 | 1 | | [SBV1A](/materials/jis/sbv1a "SBV1A") | — | ≤ 0.25 | 1 | | [SBV1B](/materials/jis/sbv1b "SBV1B") | — | ≤ 0.25 | 1 | | [SBV2](/materials/jis/sbv2 "SBV2") | — | ≤ 0.25 | 1 | | [SBV3](/materials/jis/sbv3 "SBV3") | — | ≤ 0.25 | 1 | | [SCCrM1](/materials/jis/sccrm1 "SCCrM1") Indicative | Quenched and tempered steels | 0.3–0.37 | 24 | | [SCCrM1](/materials/jis/sccrm1 "SCCrM1") Indicative | Quenched and tempered steels | 0.22–0.29 | 25 | | [SCCrM3](/materials/ks/sccrm3 "SCCrM3") Indicative | Quenched and tempered steels | 0.3–0.37 | 24 | | [SCM415M](/materials/jis/scm415m "SCM415M") | — | 0.13–0.18 | 1 | | [SCM420](/materials/ks/scm420 "SCM420") Indicative | Quenched and tempered steels | 0.3–0.37 | 24 | | [SCM420](/materials/ks/scm420 "SCM420") Indicative | Quenched and tempered steels | 0.22–0.29 | 25 | | [SCM420TK](/materials/jis/scm420tk "SCM420TK") Indicative | Quenched and tempered steels | 0.3–0.37 | 24 | | [SCM420TK](/materials/jis/scm420tk "SCM420TK") Indicative | Quenched and tempered steels | 0.22–0.29 | 25 | | [SCM430](/materials/ks/scm430 "SCM430") Indicative | Quenched and tempered steels | 0.3–0.37 | 24 | **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 "Previous") Page 2 of 17[Next](/materials/ks/page/3 "Next")