--- title: "KS steel grades — 823 designations — Page 7" 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/7 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/ks/page/7.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:db4b196229410d9fdc0df5907e87f1215667e7377fdc86511712883932b04234 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/7 > Canonical URL: https://steelequivalents.com/materials/ks/page/7 > 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 7 Every grade designated under KS, with the material number it maps to, what kind of steel it is, its carbon window and how many other standards carry it. 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 | Material no. | Category | C% by weight | Also in other standards | |---|---|---|---|---| | [SM58C](/materials/ks/sm58c "SM58C") Indicative | [1.0601](/materials/material-no/1.0601 "1.0601") | Quenched and tempered steels | 0.57–0.65 | 25 | | [SM9CK](/materials/ks/sm9ck "SM9CK") Indicative | [1.1121](/materials/material-no/1.1121 "1.1121") | Case hardening steels | 0.07–0.13 | 22 | | [SMn420](/materials/ks/smn420 "SMn420") Indicative | [1.1160](/materials/material-no/1.1160 "1.1160") | Low-temperature structural steels | 0.18–0.25 | 6 | | [SMn420H](/materials/ks/smn420h "SMn420H") Indicative | [1.1160](/materials/material-no/1.1160 "1.1160") | Low-temperature structural steels | 0.18–0.25 | 6 | | [SMn438](/materials/ks/smn438 "SMn438") Indicative | [1.1167](/materials/material-no/1.1167 "1.1167") | Quenched and tempered steels | 0.32–0.4 | 17 | | [SMn438H](/materials/ks/smn438h "SMn438H") Indicative | [1.1167](/materials/material-no/1.1167 "1.1167") | Quenched and tempered steels | 0.32–0.4 | 17 | | [SMn438M](/materials/jis/smn438m "SMn438M") | — | — | 0.35–0.41 | 1 | | [SMn443M](/materials/jis/smn443m "SMn443M") | — | — | 0.4–0.46 | 1 | | [SMnC420](/materials/jis/smnc420 "SMnC420") Indicative | [1.1133](/materials/material-no/1.1133 "1.1133") | Quenched and tempered steels | 0.17–0.23 | 20 | | [SMnC420H](/materials/jis/smnc420h "SMnC420H") Indicative | [1.7131](/materials/material-no/1.7131 "1.7131") | Case hardening steels | 0.14–0.19 | 24 | | [SNC415M](/materials/jis/snc415m "SNC415M") | — | — | 0.12–0.18 | 1 | | [SNC631M](/materials/jis/snc631m "SNC631M") | — | — | 0.27–0.35 | 1 | | [SNC836M](/materials/jis/snc836m "SNC836M") | — | — | 0.32–0.4 | 1 | | [SNCM220](/materials/ks/sncm220 "SNCM220") Indicative | [1.6523](/materials/material-no/1.6523 "1.6523") | Case hardening steels | 0.17–0.23 | 18 | | [SNCM220H](/materials/ks/sncm220h "SNCM220H") Indicative | [1.6523](/materials/material-no/1.6523 "1.6523") | Case hardening steels | 0.17–0.23 | 18 | | [SNCM220M](/materials/jis/sncm220m "SNCM220M") | — | — | 0.17–0.23 | 1 | | [SNCM415M](/materials/jis/sncm415m "SNCM415M") | — | — | 0.12–0.18 | 1 | | [SNCM439](/materials/ks/sncm439 "SNCM439") Indicative | [1.6565](/materials/material-no/1.6565 "1.6565") | Quenched and tempered steels | 0.35–0.45 | 15 | | [SNCM447](/materials/jis/sncm447 "SNCM447") Indicative | [1.6582](/materials/material-no/1.6582 "1.6582") | Quenched and tempered steels | 0.3–0.38 | 25 | | [SPCC](/materials/jis/spcc "SPCC") | — | Sheet metal and slit strip | ≤ 0.15 | 1 | | [SPCD](/materials/jis/spcd "SPCD") | — | Sheet metal and slit strip | ≤ 0.1 | 1 | | [SPCE](/materials/jis/spce "SPCE") | — | Sheet metal and slit strip | ≤ 0.08 | 1 | | [SPCF](/materials/jis/spcf "SPCF") | — | Sheet metal and slit strip | ≤ 0.06 | 1 | | [SPCG](/materials/jis/spcg "SPCG") | — | Sheet metal and slit strip | ≤ 0.02 | 1 | | [SPE](/materials/ks/spe "SPE") | — | — | ≤ 0.008 | — | | [SPHC](/materials/jis/sphc "SPHC") | — | Sheet metal and slit strip | ≤ 0.15 | 1 | | [SPHD](/materials/ks/sphd "SPHD") | [1.0332](/materials/material-no/1.0332 "1.0332") | Unalloyed structural steels | ≤ 0.12 | 16 | | [SPHE](/materials/ks/sphe "SPHE") | [1.0050](/materials/material-no/1.0050 "1.0050") | Unalloyed structural steels | — | 23 | | [SPHE](/materials/ks/sphe "SPHE") | [1.0335](/materials/material-no/1.0335 "1.0335") | Unalloyed structural steels | ≤ 0.08 | 12 | | [SPLT390](/materials/ks/splt390 "SPLT390") | — | Low-temperature structural steels | ≤ 0.25 | — | | [SPLT460](/materials/ks/splt460 "SPLT460") | — | Low-temperature structural steels | ≤ 0.18 | — | | [SPLT700](/materials/ks/splt700 "SPLT700") | — | Low-temperature structural steels | ≤ 0.13 | — | | [SPPG](/materials/ks/sppg "SPPG") | — | Unalloyed structural steels | ≤ 0.3 | — | | [SPPH380](/materials/ks/spph380 "SPPH380") | — | Unalloyed structural steels | ≤ 0.25 | — | | [SPPH420](/materials/ks/spph420 "SPPH420") | — | Unalloyed structural steels | ≤ 0.3 | — | | [SPPH490](/materials/ks/spph490 "SPPH490") | — | Unalloyed structural steels | ≤ 0.33 | — | | [SPPS380](/materials/ks/spps380 "SPPS380") | — | Unalloyed structural steels | ≤ 0.25 | — | | [SPPS420](/materials/ks/spps420 "SPPS420") | — | Unalloyed structural steels | ≤ 0.3 | — | | [SPPV235](/materials/ks/sppv235 "SPPV235") | — | — | ≤ 0.2 | — | | [SPPV315](/materials/ks/sppv315 "SPPV315") | — | — | ≤ 0.18 | — | | [SPPV315](/materials/ks/sppv315 "SPPV315") Indicative | [1.0426](/materials/material-no/1.0426 "1.0426") | Aging resistant steels | 0.08–0.2 | 17 | | [SPPV315](/materials/ks/sppv315 "SPPV315") Indicative | [1.0425](/materials/material-no/1.0425 "1.0425") | Heat-resistant structural steels | ≤ 0.2 | 20 | | [SPPV355](/materials/ks/sppv355 "SPPV355") | — | — | ≤ 0.2 | — | | [SPPV355](/materials/ks/sppv355 "SPPV355") Indicative | [1.0426](/materials/material-no/1.0426 "1.0426") | Aging resistant steels | 0.08–0.2 | 17 | | [SPPV355](/materials/ks/sppv355 "SPPV355") Indicative | [1.0425](/materials/material-no/1.0425 "1.0425") | Heat-resistant structural steels | ≤ 0.2 | 20 | | [SPPV410](/materials/ks/sppv410 "SPPV410") | — | — | ≤ 0.18 | — | | [SPPV450](/materials/ks/sppv450 "SPPV450") | — | — | ≤ 0.18 | — | | [SPPV490](/materials/ks/sppv490 "SPPV490") | — | — | ≤ 0.18 | — | | [SPS10](/materials/ks/sps10 "SPS10") | — | — | 0.47–0.55 | — | | [SPS11A](/materials/ks/sps11a "SPS11A") | — | — | 0.56–0.64 | — | **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/6 "Previous") Page 7 of 17[Next](/materials/ks/page/8 "Next")