--- title: "KS steel grades — 823 designations — Page 13" 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/13 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/ks/page/13.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: sha256:6dd83856bc7735b1533c59867c637a6b00a3d07ae4c5bfe34a3b56f35d2603a9 generated: 2026-09-25 --- > **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/13 > Canonical URL: https://steelequivalents.com/materials/ks/page/13 > 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 13 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 | |---|---|---| | [STS329J2LTB](/materials/ks/sts329j2ltb "STS329J2LTB") | Stainless steels | ≤ 0.03 | | [STS329J3L](/materials/ks/sts329j3l "STS329J3L") | Stainless steels | ≤ 0.03 | | [STS329J4L](/materials/ks/sts329j4l "STS329J4L") | Stainless steels | ≤ 0.03 | | [STS329LDTB](/materials/ks/sts329ldtb "STS329LDTB") | Stainless steels | ≤ 0.03 | | [STS347](/materials/ks/sts347 "STS347") | Stainless steels | — | | [STS347HTB](/materials/ks/sts347htb "STS347HTB") | Stainless steels | — | | [STS347TB](/materials/ks/sts347tb "STS347TB") | Stainless steels | — | | [STS350](/materials/ks/sts350 "STS350") | Stainless steels | ≤ 0.03 | | [STS350FB](/materials/ks/sts350fb "STS350FB") | — | ≤ 0.03 | | [STS350TB](/materials/ks/sts350tb "STS350TB") | Stainless steels | ≤ 0.03 | | [STS384](/materials/ks/sts384 "STS384") | — | ≤ 0.08 | | [STS4](/materials/ks/sts4 "STS4") | — | 0.45–0.55 | | [STS403](/materials/ks/sts403 "STS403") | Stainless steels | ≤ 0.15 | | [STS403FB](/materials/ks/sts403fb "STS403FB") | — | ≤ 0.15 | | [STS405](/materials/ks/sts405 "STS405") | Stainless steels | ≤ 0.08 | | [STS405TB](/materials/ks/sts405tb "STS405TB") | Stainless steels | ≤ 0.08 | | [STS409TB](/materials/ks/sts409tb "STS409TB") | Stainless steels | — | | [STS41](/materials/ks/sts41 "STS41") | — | 0.35–0.45 | | [STS410](/materials/jis/sts410 "STS410") | Unalloyed structural steels | ≤ 0.3 | | [STS410](/materials/jis/sts410 "STS410") Indicative | Stainless steels | 0.08–0.15 | | [STS410F2](/materials/ks/sts410f2 "STS410F2") | Stainless steels | ≤ 0.15 | | [STS410FB](/materials/ks/sts410fb "STS410FB") | — | ≤ 0.15 | | [STS410J1](/materials/ks/sts410j1 "STS410J1") | Stainless steels | 0.08–0.18 | | [STS410J1FB](/materials/ks/sts410j1fb "STS410J1FB") | — | 0.08–0.18 | | [STS410L](/materials/ks/sts410l "STS410L") | Stainless steels | ≤ 0.03 | | [STS410TB](/materials/ks/sts410tb "STS410TB") | Stainless steels | ≤ 0.15 | | [STS410TiTB](/materials/ks/sts410titb "STS410TiTB") | Stainless steels | — | | [STS410TKA](/materials/ks/sts410tka "STS410TKA") Indicative | Stainless steels | 0.08–0.15 | | [STS416](/materials/ks/sts416 "STS416") | Stainless steels | ≤ 0.15 | | [STS420F](/materials/ks/sts420f "STS420F") | Stainless steels | 0.26–0.4 | | [STS420F2](/materials/ks/sts420f2 "STS420F2") | Stainless steels | 0.26–0.4 | | [STS420J1](/materials/ks/sts420j1 "STS420J1") | Stainless steels | 0.16–0.25 | | [STS420J1FB](/materials/ks/sts420j1fb "STS420J1FB") | — | 0.16–0.25 | | [STS420J2](/materials/ks/sts420j2 "STS420J2") | Stainless steels | 0.26–0.4 | | [STS420J2FB](/materials/ks/sts420j2fb "STS420J2FB") | — | 0.26–0.4 | | [STS43](/materials/ks/sts43 "STS43") | — | 1–1.1 | | [STS430](/materials/ks/sts430 "STS430") | Stainless steels | ≤ 0.12 | | [STS430CA](/materials/ks/sts430ca "STS430CA") | Stainless steels | ≤ 0.12 | | [STS430F](/materials/ks/sts430f "STS430F") | Stainless steels | ≤ 0.12 | | [STS430TB](/materials/ks/sts430tb "STS430TB") | Stainless steels | ≤ 0.12 | | [STS431](/materials/ks/sts431 "STS431") | Stainless steels | ≤ 0.2 | | [STS431FB](/materials/ks/sts431fb "STS431FB") | — | ≤ 0.2 | | [STS434](/materials/ks/sts434 "STS434") | Stainless steels | ≤ 0.12 | | [STS44](/materials/ks/sts44 "STS44") | — | 0.8–0.9 | | [STS440A](/materials/ks/sts440a "STS440A") | Stainless steels | 0.6–0.75 | | [STS440B](/materials/ks/sts440b "STS440B") | Stainless steels | 0.75–0.95 | | [STS440C](/materials/ks/sts440c "STS440C") | Stainless steels | 0.95–1.2 | | [STS440F](/materials/ks/sts440f "STS440F") | Stainless steels | 0.95–1.2 | | [STS444TB](/materials/ks/sts444tb "STS444TB") | Stainless steels | — | | [STS447J1](/materials/ks/sts447j1 "STS447J1") | Stainless steels | ≤ 0.01 | **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/12 "Previous") Page 13 of 17[Next](/materials/ks/page/14 "Next")