--- title: "KS steel grades — 823 designations — Page 15" 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/15 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/ks/page/15.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: sha256:6f6d5ee6b3badcc0eec5b776a38cb0ed69c9981fceac6f8fb4c1fc07965f9678 generated: 2026-09-26 --- > **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/15 > Canonical URL: https://steelequivalents.com/materials/ks/page/15 > 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 15 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. 3 of 50 rows differ and carry an “Indicative” mark. ## Also known as 823 designations | Grade | Category | C% by weight | Also in other standards | |---|---|---|---| | [STSXM8TB](/materials/ks/stsxm8tb "STSXM8TB") | Stainless steels | — | — | | [STSY16-8-2](/materials/ks/stsy16-8-2 "STSY16-8-2") | — | ≤ 0.1 | — | | [STSY308](/materials/ks/stsy308 "STSY308") | — | ≤ 0.08 | — | | [STSY308L](/materials/ks/stsy308l "STSY308L") | — | ≤ 0.03 | — | | [STSY309](/materials/ks/stsy309 "STSY309") | — | ≤ 0.12 | — | | [STSY309L](/materials/ks/stsy309l "STSY309L") | — | ≤ 0.03 | — | | [STSY309Mo](/materials/ks/stsy309mo "STSY309Mo") | — | ≤ 0.12 | — | | [STSY310](/materials/ks/stsy310 "STSY310") | — | ≤ 0.15 | — | | [STSY310S](/materials/ks/stsy310s "STSY310S") | — | ≤ 0.08 | — | | [STSY312](/materials/ks/stsy312 "STSY312") | — | ≤ 0.15 | — | | [STSY316](/materials/ks/stsy316 "STSY316") | — | ≤ 0.08 | — | | [STSY316J1L](/materials/ks/stsy316j1l "STSY316J1L") | — | ≤ 0.03 | — | | [STSY316L](/materials/ks/stsy316l "STSY316L") | — | ≤ 0.03 | — | | [STSY317](/materials/ks/stsy317 "STSY317") | — | ≤ 0.08 | — | | [STSY317L](/materials/ks/stsy317l "STSY317L") | — | ≤ 0.03 | — | | [STSY410](/materials/ks/stsy410 "STSY410") | — | ≤ 0.12 | — | | [STSY430](/materials/ks/stsy430 "STSY430") | — | ≤ 0.1 | — | | [SUM11](/materials/jis/sum11 "SUM11") | Free cutting steels | 0.08–0.13 | 1 | | [SUM12](/materials/jis/sum12 "SUM12") | Free cutting steels | 0.08–0.13 | 1 | | [SUM21](/materials/ks/sum21 "SUM21") | Free cutting steels | ≤ 0.12 | 6 | | [SUM22](/materials/ks/sum22 "SUM22") | Free cutting steels | ≤ 0.14 | 14 | | [SUM22L](/materials/ks/sum22l "SUM22L") | Free cutting steels | ≤ 0.14 | 11 | | [SUM23](/materials/ks/sum23 "SUM23") | Free cutting steels | ≤ 0.14 | 14 | | [SUM23L](/materials/jis/sum23l "SUM23L") | Free cutting steels | ≤ 0.09 | 1 | | [SUM24L](/materials/ks/sum24l "SUM24L") | Free cutting steels | ≤ 0.14 | 11 | | [SUM25](/materials/ks/sum25 "SUM25") | Free cutting steels | ≤ 0.14 | 11 | | [SUM31](/materials/ks/sum31 "SUM31") | Free cutting steels | 0.12–0.18 | 5 | | [SUM31L](/materials/jis/sum31l "SUM31L") | Free cutting steels | 0.14–0.2 | 1 | | [SUM32](/materials/jis/sum32 "SUM32") | Free cutting steels | 0.12–0.2 | 1 | | [SUM41](/materials/ks/sum41 "SUM41") | Free cutting steels | 0.32–0.39 | 4 | | [SUM42](/materials/jis/sum42 "SUM42") | Free cutting steels | 0.37–0.45 | 1 | | [SUM43](/materials/ks/sum43 "SUM43") | Free cutting steels | 0.4–0.48 | 20 | | [SUP10-CSP](/materials/jis/sup10-csp "SUP10-CSP") | Spring steels | 0.47–0.55 | 1 | | [SUP10M](/materials/jis/sup10m "SUP10M") | — | 0.47–0.55 | 1 | | [SUP6M](/materials/jis/sup6m "SUP6M") | — | 0.56–0.64 | 1 | | [SUP9M](/materials/jis/sup9m "SUP9M") | — | 0.52–0.6 | 1 | | [SUS304](/materials/ks/sus304 "SUS304") Indicative | Stainless steels | ≤ 0.07 | 23 | | [SV330](/materials/ks/sv330 "SV330") | — | — | — | | [SV400](/materials/ks/sv400 "SV400") | — | — | — | | [SWCH10A](/materials/jis/swch10a "SWCH10A") Indicative | — | 0.08–0.13 | 5 | | [SWCH20K](/materials/jis/swch20k "SWCH20K") Indicative | — | 0.18–0.23 | 5 | | [SWO-A](/materials/jis/swo-a "SWO-A") | Spring steels | 0.53–0.88 | 1 | | [SWO-B](/materials/jis/swo-b "SWO-B") | Spring steels | 0.53–0.88 | 1 | | [SWO-V](/materials/jis/swo-v "SWO-V") | Spring steels | 0.6–0.75 | 1 | | [SWOCV-V](/materials/jis/swocv-v "SWOCV-V") | Spring steels | 0.45–0.55 | 1 | | [SWOSC-B](/materials/jis/swosc-b "SWOSC-B") | Spring steels | 0.51–0.59 | 1 | | [SWOSC-V](/materials/jis/swosc-v "SWOSC-V") | Spring steels | 0.51–0.59 | 1 | | [SWOSM](/materials/jis/swosm "SWOSM") | Spring steels | 0.56–0.64 | 1 | | [SWP400](/materials/ks/swp400 "SWP400") | Unalloyed structural steels | ≤ 0.25 | — | | [SWP600](/materials/ks/swp600 "SWP600") | Unalloyed structural steels | ≤ 0.25 | — | **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/14 "Previous") Page 15 of 17[Next](/materials/ks/page/16 "Next")