--- title: "JIS steel grades — 2322 designations — Page 16" description: "Steel grades designated under JIS, with chemical composition, mechanical properties and equivalents in other standards. 2322 designations across…" canonical: https://steelequivalents.com/materials/jis/page/16 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/jis/page/16.md cs: https://steelequivalents.com/cs/materiály/jis.md de: https://steelequivalents.com/de/werkstoffe/jis.md es: https://steelequivalents.com/es/materiales/jis.md fr: https://steelequivalents.com/fr/matériaux/jis.md hu: https://steelequivalents.com/hu/anyagok/jis.md it: https://steelequivalents.com/it/materiali/jis.md nl: https://steelequivalents.com/nl/materialen/jis.md pl: https://steelequivalents.com/pl/materiały/jis.md pt: https://steelequivalents.com/pt/materiais/jis.md ru: https://steelequivalents.com/ru/материалы/jis.md tr: https://steelequivalents.com/tr/malzemeler/jis.md zh: https://steelequivalents.com/zh/材料/jis.md ja: https://steelequivalents.com/ja/材料/jis.md ar: https://steelequivalents.com/ar/المواد/jis.md ko: https://steelequivalents.com/ko/재료/jis.md pt-br: https://steelequivalents.com/pt-br/materiais/jis.md hi: https://steelequivalents.com/hi/सामग्री/jis.md content_hash: sha256:b76061df6f7fdea6ebc6c22fea20893372c96defac390c7e27f428611065eddd 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/jis/page/16 > Canonical URL: https://steelequivalents.com/materials/jis/page/16 > 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. JIS · 2,322 grades # JIS steel grades — 2322 designations — Page 16 Every grade designated under JIS, 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. 5 of 50 rows differ and carry an “Indicative” mark. ## Also known as 2322 designations | Grade | Category | C% by weight | Also in other standards | |---|---|---|---| | [SF440A](/materials/jis/sf440a "SF440A") | Unalloyed structural steels | ≤ 0.6 | 1 | | [SF490A](/materials/jis/sf490a "SF490A") | Unalloyed structural steels | ≤ 0.6 | 1 | | [SF540A](/materials/jis/sf540a "SF540A") | Unalloyed structural steels | ≤ 0.6 | 1 | | [SF540B](/materials/jis/sf540b "SF540B") | Unalloyed structural steels | ≤ 0.6 | 1 | | [SF590A](/materials/jis/sf590a "SF590A") | Unalloyed structural steels | ≤ 0.6 | 1 | | [SF590B](/materials/jis/sf590b "SF590B") | Unalloyed structural steels | ≤ 0.6 | 1 | | [SF640B](/materials/jis/sf640b "SF640B") | Unalloyed structural steels | ≤ 0.6 | 1 | | [SFB1](/materials/jis/sfb1 "SFB1") | Unalloyed structural steels | 0.05–0.2 | 1 | | [SFB2](/materials/jis/sfb2 "SFB2") | Unalloyed structural steels | 0.1–0.25 | 1 | | [SFB3](/materials/jis/sfb3 "SFB3") | Unalloyed structural steels | 0.15–0.3 | 1 | | [SFB4](/materials/jis/sfb4 "SFB4") | Unalloyed structural steels | 0.2–0.38 | 1 | | [SFB5](/materials/jis/sfb5 "SFB5") | Unalloyed structural steels | 0.28–0.45 | 1 | | [SFB6](/materials/jis/sfb6 "SFB6") | Unalloyed structural steels | 0.35–0.5 | 1 | | [SFB7](/materials/jis/sfb7 "SFB7") | Unalloyed structural steels | 0.4–0.6 | 1 | | [SFCM590](/materials/jis/sfcm590 "SFCM590") | — | ≤ 0.48 | — | | [SFCM640](/materials/jis/sfcm640 "SFCM640") | — | ≤ 0.48 | — | | [SFCM690](/materials/jis/sfcm690 "SFCM690") | — | ≤ 0.48 | — | | [SFCM740](/materials/jis/sfcm740 "SFCM740") | — | ≤ 0.48 | — | | [SFCM780](/materials/jis/sfcm780 "SFCM780") | — | ≤ 0.48 | — | | [SFCM830](/materials/jis/sfcm830 "SFCM830") | — | ≤ 0.48 | — | | [SFCM880](/materials/jis/sfcm880 "SFCM880") | — | ≤ 0.48 | — | | [SFCM930](/materials/jis/sfcm930 "SFCM930") | — | ≤ 0.48 | — | | [SFCM980](/materials/jis/sfcm980 "SFCM980") | — | ≤ 0.48 | — | | [SFL1](/materials/jis/sfl1 "SFL1") | Low-temperature structural steels | ≤ 0.3 | 1 | | [SFL2](/materials/jis/sfl2 "SFL2") | Low-temperature structural steels | ≤ 0.3 | 1 | | [SFL3](/materials/jis/sfl3 "SFL3") | Low-temperature structural steels | ≤ 0.2 | 1 | | [SFNCM1030](/materials/jis/sfncm1030 "SFNCM1030") | — | ≤ 0.5 | — | | [SFNCM1080](/materials/jis/sfncm1080 "SFNCM1080") | — | ≤ 0.5 | — | | [SFNCM690](/materials/jis/sfncm690 "SFNCM690") | — | ≤ 0.5 | — | | [SFNCM740](/materials/jis/sfncm740 "SFNCM740") | — | ≤ 0.5 | — | | [SFNCM780](/materials/jis/sfncm780 "SFNCM780") | — | ≤ 0.5 | — | | [SFNCM830](/materials/jis/sfncm830 "SFNCM830") | — | ≤ 0.5 | — | | [SFNCM880](/materials/jis/sfncm880 "SFNCM880") | — | ≤ 0.5 | — | | [SFNCM930](/materials/jis/sfncm930 "SFNCM930") | — | ≤ 0.5 | — | | [SFNCM980](/materials/jis/sfncm980 "SFNCM980") | — | ≤ 0.5 | — | | [SFT590](/materials/jis/sft590 "SFT590") | High-strength steels | ≤ 0.2 | — | | [SFVA12](/materials/jis/sfva12 "SFVA12") Indicative | Heat-resistant structural steels | 0.08–0.18 | 22 | | [SFVAB5A](/materials/jis/sfvab5a "SFVAB5A") Indicative | Hydrogen resistant steels | 0.1–0.15 | 13 | | [SFVAF1](/materials/jis/sfvaf1 "SFVAF1") | — | ≤ 0.3 | 1 | | [SFVAF11A](/materials/jis/sfvaf11a "SFVAF11A") | — | ≤ 0.2 | 1 | | [SFVAF11B](/materials/jis/sfvaf11b "SFVAF11B") | — | ≤ 0.2 | 1 | | [SFVAF12](/materials/jis/sfvaf12 "SFVAF12") | — | ≤ 0.2 | 1 | | [SFVAF12](/materials/jis/sfvaf12 "SFVAF12") Indicative | Heat-resistant structural steels | 0.08–0.18 | 22 | | [SFVAF12](/materials/jis/sfvaf12 "SFVAF12") Indicative | Case hardening steels | 0.13–0.17 | 18 | | [SFVAF2](/materials/jis/sfvaf2 "SFVAF2") | — | ≤ 0.2 | 1 | | [SFVAF21A](/materials/jis/sfvaf21a "SFVAF21A") | — | ≤ 0.15 | 1 | | [SFVAF21B](/materials/jis/sfvaf21b "SFVAF21B") | — | ≤ 0.15 | 1 | | [SFVAF22A](/materials/jis/sfvaf22a "SFVAF22A") | — | ≤ 0.15 | 1 | | [SFVAF22A](/materials/jis/sfvaf22a "SFVAF22A") Indicative | Heat-resistant structural steels | 0.08–0.14 | 20 | | [SFVAF22B](/materials/jis/sfvaf22b "SFVAF22B") | — | ≤ 0.15 | 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/jis/page/15 "Previous") Page 16 of 47[Next](/materials/jis/page/17 "Next")