--- title: "AFNOR steel grades — 1469 designations — Page 10" description: "Steel grades designated under AFNOR, with chemical composition, mechanical properties and equivalents in other standards. 1469 designations across…" canonical: https://steelequivalents.com/materials/afnor/page/10 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/afnor/page/10.md cs: https://steelequivalents.com/cs/materiály/afnor.md de: https://steelequivalents.com/de/werkstoffe/afnor.md es: https://steelequivalents.com/es/materiales/afnor.md fr: https://steelequivalents.com/fr/matériaux/afnor.md hu: https://steelequivalents.com/hu/anyagok/afnor.md it: https://steelequivalents.com/it/materiali/afnor.md nl: https://steelequivalents.com/nl/materialen/afnor.md pl: https://steelequivalents.com/pl/materiały/afnor.md pt: https://steelequivalents.com/pt/materiais/afnor.md ru: https://steelequivalents.com/ru/материалы/afnor.md tr: https://steelequivalents.com/tr/malzemeler/afnor.md zh: https://steelequivalents.com/zh/材料/afnor.md ja: https://steelequivalents.com/ja/材料/afnor.md ar: https://steelequivalents.com/ar/المواد/afnor.md ko: https://steelequivalents.com/ko/재료/afnor.md pt-br: https://steelequivalents.com/pt-br/materiais/afnor.md hi: https://steelequivalents.com/hi/सामग्री/afnor.md content_hash: sha256:48070be4a8017e5d92cf475f27d355623ee938149be55de6f2453495fb92feed 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/afnor/page/10 > Canonical URL: https://steelequivalents.com/materials/afnor/page/10 > 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. AFNOR · 1,469 grades # AFNOR steel grades — 1469 designations — Page 10 Every grade designated under AFNOR, 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 indicative cross-reference, not an asserted identity — the grades are close, not interchangeable. 1 of 50 rows differ and carry a “This grade’s own name” mark. ## Also known as 1469 designations | Grade | Material no. | Category | C% by weight | Also in other standards | |---|---|---|---|---| | [A70-2](/materials/afnor/a70-2 "A70-2") | [1.0070](/materials/material-no/1.0070 "1.0070") | Unalloyed structural steels | — | 16 | | [AF Z12CN25-20](/materials/afnor/af-z12cn25-20 "AF Z12CN25-20") | [1.4845](/materials/material-no/1.4845 "1.4845") | Heat resistant steels | ≤ 0.1 | 21 | | [AF Z12CN25-20](/materials/afnor/af-z12cn25-20 "AF Z12CN25-20") | [1.4843](/materials/material-no/1.4843 "1.4843") | Resistance heating alloys | ≤ 0.2 | 9 | | [AF-34](/materials/afnor/af34 "AF-34") | [1.1121](/materials/material-no/1.1121 "1.1121") | Case hardening steels | 0.07–0.13 | 22 | | [AF34](/materials/afnor/af34 "AF34") | [1.0301](/materials/material-no/1.0301 "1.0301") | Case hardening steels | 0.07–0.13 | 20 | | [AF34C10](/materials/afnor/af34c10 "AF34C10") | [1.0301](/materials/material-no/1.0301 "1.0301") | Case hardening steels | 0.07–0.13 | 20 | | [AF37C12](/materials/afnor/af37c12 "AF37C12") | [1.0401](/materials/material-no/1.0401 "1.0401") | Case hardening steels | 0.12–0.18 | 23 | | [AF42](/materials/afnor/af42 "AF42") | [1.0402](/materials/material-no/1.0402 "1.0402") | Quenched and tempered steels | 0.17–0.24 | 24 | | [AF42C20](/materials/afnor/af42c20 "AF42C20") | [1.0402](/materials/material-no/1.0402 "1.0402") | Quenched and tempered steels | 0.17–0.24 | 24 | | [AF50C30](/materials/afnor/af50c30 "AF50C30") | [1.0528](/materials/material-no/1.0528 "1.0528") | Quenched and tempered steels | 0.27–0.34 | 14 | | [AF50C30](/materials/afnor/af50c30 "AF50C30") | [1.0406](/materials/material-no/1.0406 "1.0406") | Quenched and tempered steels | 0.22–0.29 | 20 | | [AF55](/materials/afnor/af55 "AF55") | [1.0501](/materials/material-no/1.0501 "1.0501") | Quenched and tempered steels | 0.32–0.39 | 23 | | [AF55C35](/materials/afnor/af55c35 "AF55C35") | [1.0501](/materials/material-no/1.0501 "1.0501") | Quenched and tempered steels | 0.32–0.39 | 23 | | [AF60C40](/materials/afnor/af60c40 "AF60C40") | [1.0511](/materials/material-no/1.0511 "1.0511") | Quenched and tempered steels | 0.37–0.44 | 21 | | [AF60C45](/materials/afnor/af60c45 "AF60C45") | [1.0511](/materials/material-no/1.0511 "1.0511") | Quenched and tempered steels | 0.37–0.44 | 21 | | [AF65](/materials/afnor/af65 "AF65") | [1.0503](/materials/material-no/1.0503 "1.0503") | Quenched and tempered steels | 0.42–0.5 | 24 | | [AF65C45](/materials/afnor/af65c45 "AF65C45") | [1.0503](/materials/material-no/1.0503 "1.0503") | Quenched and tempered steels | 0.42–0.5 | 24 | | [AF70](/materials/afnor/af70 "AF70") | [1.0535](/materials/material-no/1.0535 "1.0535") | Quenched and tempered steels | 0.52–0.6 | 21 | | [AF70](/materials/afnor/af70 "AF70") | [1.0601](/materials/material-no/1.0601 "1.0601") | Quenched and tempered steels | 0.57–0.65 | 25 | | [AF70C55](/materials/afnor/af70c55 "AF70C55") | [1.0535](/materials/material-no/1.0535 "1.0535") | Quenched and tempered steels | 0.52–0.6 | 21 | | [AF70C55](/materials/afnor/af70c55 "AF70C55") | [1.0601](/materials/material-no/1.0601 "1.0601") | Quenched and tempered steels | 0.57–0.65 | 25 | | [AFNOT Z7CN18-09](/materials/afnor/afnot-z7cn18-09 "AFNOT Z7CN18-09") This grade’s own name | [1.4301](/materials/material-no/1.4301 "1.4301") | Stainless steels | ≤ 0.07 | 23 | | [AP](/materials/afnor/ap "AP") | [1.0345](/materials/material-no/1.0345 "1.0345") | Heat-resistant structural steels | ≤ 0.16 | 18 | | [AP](/materials/afnor/ap "AP") | [1.0425](/materials/material-no/1.0425 "1.0425") | Heat-resistant structural steels | ≤ 0.2 | 20 | | [AP](/materials/afnor/ap "AP") | [1.0473](/materials/material-no/1.0473 "1.0473") | Heat-resistant structural steels | 0.1–0.22 | 10 | | [AP](/materials/afnor/ap "AP") | [1.0481](/materials/material-no/1.0481 "1.0481") | Heat-resistant structural steels | 0.08–0.2 | 17 | | [BS1](/materials/bs/bs1 "BS1") | [1.0111](/materials/material-no/1.0111 "1.0111") | Unalloyed structural steels | ≤ 0.16 | 5 | | [BS2](/materials/afnor/bs2 "BS2") | [1.0423](/materials/material-no/1.0423 "1.0423") | Heat-resistant structural steels | ≤ 0.19 | 6 | | [BS3](/materials/afnor/bs3 "BS3") | [1.0437](/materials/material-no/1.0437 "1.0437") | Others | ≤ 0.2 | 8 | | [BS4](/materials/afnor/bs4 "BS4") | [1.0557](/materials/material-no/1.0557 "1.0557") | Others | ≤ 0.2 | 4 | | [C](/materials/afnor/c "C") | [1.0330](/materials/material-no/1.0330 "1.0330") | Unalloyed structural steels | ≤ 0.12 | 17 | | [C10](/materials/din-en/c10 "C10") | [1.0301](/materials/material-no/1.0301 "1.0301") | Case hardening steels | 0.07–0.13 | 20 | | [C100RR](/materials/afnor/c100rr "C100RR") | [1.1274](/materials/material-no/1.1274 "1.1274") | Spring steels | 0.95–1.05 | 13 | | [C105E2U](/materials/afnor/c105e2u "C105E2U") | [1.1535](/materials/material-no/1.1535 "1.1535") | Unalloyed tool steels / carbon steels | 0.85–0.95 | 14 | | [C105E2U](/materials/afnor/c105e2u "C105E2U") | [1.1545](/materials/material-no/1.1545 "1.1545") | Unalloyed tool steels / carbon steels | 1–1.1 | 19 | | [C105E2U](/materials/afnor/c105e2u "C105E2U") | [1.1645](/materials/material-no/1.1645 "1.1645") | Unalloyed tool steels / carbon steels | 1–1.1 | 18 | | [C10RR](/materials/afnor/c10rr "C10RR") | [1.0301](/materials/material-no/1.0301 "1.0301") | Case hardening steels | 0.07–0.13 | 20 | | [C10RR](/materials/afnor/c10rr "C10RR") | [1.1121](/materials/material-no/1.1121 "1.1121") | Case hardening steels | 0.07–0.13 | 22 | | [C120E3U](/materials/afnor/c120e3u "C120E3U") | [1.1645](/materials/material-no/1.1645 "1.1645") | Unalloyed tool steels / carbon steels | 1–1.1 | 18 | | [C120E3U](/materials/afnor/c120e3u "C120E3U") | [1.1563](/materials/material-no/1.1563 "1.1563") | Unalloyed tool steels / carbon steels | 1.2–1.35 | 13 | | [C120E3U](/materials/afnor/c120e3u "C120E3U") | [1.1555](/materials/material-no/1.1555 "1.1555") | Unalloyed tool steels / carbon steels | 1.15–1.25 | 16 | | [C120E3UCr4](/materials/afnor/c120e3ucr4 "C120E3UCr4") | [1.1224](/materials/material-no/1.1224 "1.1224") | Others | 1.2–1.3 | 2 | | [C120E3UCr4](/materials/afnor/c120e3ucr4 "C120E3UCr4") | [1.2002](/materials/material-no/1.2002 "1.2002") | Tool steels for cold work | 1.2–1.3 | 2 | | [C120U](/materials/din-en/c120u "C120U") | — | — | 1.15–1.24 | 7 | | [C125RR](/materials/afnor/c125rr "C125RR") | [1.1224](/materials/material-no/1.1224 "1.1224") | Others | 1.2–1.3 | 2 | | [C125RR](/materials/afnor/c125rr "C125RR") | [1.2002](/materials/material-no/1.2002 "1.2002") | Tool steels for cold work | 1.2–1.3 | 2 | | [C140E3U](/materials/afnor/c140e3u "C140E3U") | [1.1563](/materials/material-no/1.1563 "1.1563") | Unalloyed tool steels / carbon steels | 1.2–1.35 | 13 | | [C15E](/materials/din-en/c15e "C15E") | [1.1141](/materials/material-no/1.1141 "1.1141") | Case hardening steels | 0.12–0.18 | 20 | | [C18RR](/materials/afnor/c18rr "C18RR") | [1.1141](/materials/material-no/1.1141 "1.1141") | Case hardening steels | 0.12–0.18 | 20 | | [C18RR](/materials/afnor/c18rr "C18RR") | [1.0401](/materials/material-no/1.0401 "1.0401") | Case hardening steels | 0.12–0.18 | 23 | **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/afnor/page/9 "Previous") Page 10 of 30[Next](/materials/afnor/page/11 "Next")