--- title: "UNE steel grades — 760 designations — Page 10" description: "Steel grades designated under UNE, with chemical composition, mechanical properties and equivalents in other standards. 760 designations across…" canonical: https://steelequivalents.com/materials/une/page/10 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/une/page/10.md cs: https://steelequivalents.com/cs/materiály/une.md de: https://steelequivalents.com/de/werkstoffe/une.md es: https://steelequivalents.com/es/materiales/une.md fr: https://steelequivalents.com/fr/matériaux/une.md hu: https://steelequivalents.com/hu/anyagok/une.md it: https://steelequivalents.com/it/materiali/une.md nl: https://steelequivalents.com/nl/materialen/une.md pl: https://steelequivalents.com/pl/materiały/une.md pt: https://steelequivalents.com/pt/materiais/une.md ru: https://steelequivalents.com/ru/материалы/une.md tr: https://steelequivalents.com/tr/malzemeler/une.md zh: https://steelequivalents.com/zh/材料/une.md ja: https://steelequivalents.com/ja/材料/une.md ar: https://steelequivalents.com/ar/المواد/une.md ko: https://steelequivalents.com/ko/재료/une.md pt-br: https://steelequivalents.com/pt-br/materiais/une.md hi: https://steelequivalents.com/hi/सामग्री/une.md content_hash: sha256:e87c10f33578b7cf995727d64bc2cb41354daa19453e41451877768c6d4c5ccf 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/une/page/10 > Canonical URL: https://steelequivalents.com/materials/une/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. UNE · 760 grades # UNE steel grades — 760 designations — Page 10 Every grade designated under UNE, 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. Every name on this page is an indicative cross-reference, not an asserted identity: the grades are close, not interchangeable. Check the composition before you substitute. ## Also known as 760 designations | Grade | Material no. | Category | C% by weight | Also in other standards | |---|---|---|---|---| | [F.3221-X40CrSiMo](/materials/une/f-3221-x40crsimo "F.3221-X40CrSiMo") | [1.4731](/materials/material-no/1.4731 "1.4731") | Valve steels | 0.35–0.45 | 12 | | [F.3222](/materials/une/f-3222 "F.3222") | [1.4747](/materials/material-no/1.4747 "1.4747") | Others | 0.75–0.85 | 7 | | [F.3222-X](/materials/une/f-3222-x "F.3222-X") | [1.4747](/materials/material-no/1.4747 "1.4747") | Others | 0.75–0.85 | 7 | | [F.3223](/materials/une/f-3223 "F.3223") | [1.4748](/materials/material-no/1.4748 "1.4748") | Valve steels | 0.8–0.9 | 2 | | [F.3309](/materials/une/f-3309 "F.3309") | [1.4460](/materials/material-no/1.4460 "1.4460") | Stainless steels | ≤ 0.05 | 10 | | [F.331](/materials/une/f-331 "F.331") | [1.4845](/materials/material-no/1.4845 "1.4845") | Heat resistant steels | ≤ 0.1 | 21 | | [F.331](/materials/une/f-331 "F.331") | [1.4842](/materials/material-no/1.4842 "1.4842") | Others | ≤ 0.14 | 14 | | [F.3310](/materials/une/f-3310 "F.3310") | [1.4841](/materials/material-no/1.4841 "1.4841") | Heat resistant steels | ≤ 0.2 | 17 | | [F.3310-X15 CrNiSi 25-20](/materials/une/f-3310-x15-crnisi-25-20 "F.3310-X15 CrNiSi 25-20") | [1.4841](/materials/material-no/1.4841 "1.4841") | Heat resistant steels | ≤ 0.2 | 17 | | [F.3312](/materials/une/f-3312 "F.3312") | [1.4828](/materials/material-no/1.4828 "1.4828") | Heat resistant steels | ≤ 0.2 | 20 | | [F.3313](/materials/une/f-3313 "F.3313") | [1.4864](/materials/material-no/1.4864 "1.4864") | Heat resistant steels | ≤ 0.15 | 14 | | [F.3313-X 12 CrNi 36-16](/materials/une/f-3313-x-12-crni-36-16 "F.3313-X 12 CrNi 36-16") | [1.4864](/materials/material-no/1.4864 "1.4864") | Heat resistant steels | ≤ 0.15 | 14 | | [F.3314](/materials/une/f-3314 "F.3314") | [1.4876](/materials/material-no/1.4876 "1.4876") | Heat resistant steels | ≤ 0.12 | 12 | | [F.332](/materials/une/f-332 "F.332") | [1.4541](/materials/material-no/1.4541 "1.4541") | Stainless steels | ≤ 0.08 | 25 | | [F.3401](/materials/une/f-3401 "F.3401") | [1.4006](/materials/material-no/1.4006 "1.4006") | Stainless steels | 0.08–0.15 | 26 | | [F.3401-X12Cr 13](/materials/une/f-3401-x12cr-13 "F.3401-X12Cr 13") | [1.4006](/materials/material-no/1.4006 "1.4006") | Stainless steels | 0.08–0.15 | 26 | | [F.3402](/materials/une/f-3402 "F.3402") | [1.4021](/materials/material-no/1.4021 "1.4021") | Stainless steels | 0.16–0.25 | 18 | | [F.3402-X20Cr 13](/materials/une/f-3402-x20cr-13 "F.3402-X20Cr 13") | [1.4021](/materials/material-no/1.4021 "1.4021") | Stainless steels | 0.16–0.25 | 18 | | [F.3403](/materials/une/f-3403 "F.3403") | [1.4028](/materials/material-no/1.4028 "1.4028") | Stainless steels | 0.26–0.35 | 18 | | [F.3403](/materials/une/f-3403 "F.3403") | [1.2083](/materials/material-no/1.2083 "1.2083") | Tool steels for cold work | 0.36–0.42 | 16 | | [F.3403-X30Cr 13](/materials/une/f-3403-x30cr-13 "F.3403-X30Cr 13") | [1.4028](/materials/material-no/1.4028 "1.4028") | Stainless steels | 0.26–0.35 | 18 | | [F.3404](/materials/une/f-3404 "F.3404") | [1.4031](/materials/material-no/1.4031 "1.4031") | Stainless steels | 0.36–0.42 | 18 | | [F.3404-X40Cr 13](/materials/une/f-3404-x40cr-13 "F.3404-X40Cr 13") | [1.4031](/materials/material-no/1.4031 "1.4031") | Stainless steels | 0.36–0.42 | 18 | | [F.3405](/materials/une/f-3405 "F.3405") | [1.4034](/materials/material-no/1.4034 "1.4034") | Stainless steels | 0.43–0.5 | 18 | | [F.3405](/materials/une/f-3405 "F.3405") | [1.4031](/materials/material-no/1.4031 "1.4031") | Stainless steels | 0.36–0.42 | 18 | | [F.3405-X46Cr13](/materials/une/f-3405-x46cr13 "F.3405-X46Cr13") | [1.4034](/materials/material-no/1.4034 "1.4034") | Stainless steels | 0.43–0.5 | 18 | | [F.3411](/materials/une/f-3411 "F.3411") | [1.4005](/materials/material-no/1.4005 "1.4005") | Stainless steels | 0.08–0.15 | 14 | | [F.3411-X12 CrS 13](/materials/une/f-3411-x12-crs-13 "F.3411-X12 CrS 13") | [1.4005](/materials/material-no/1.4005 "1.4005") | Stainless steels | 0.08–0.15 | 14 | | [F.3413](/materials/une/f-3413 "F.3413") | [1.4104](/materials/material-no/1.4104 "1.4104") | Stainless steels | 0.1–0.17 | 13 | | [F.3415](/materials/une/f-3415 "F.3415") | [1.4024](/materials/material-no/1.4024 "1.4024") | Stainless steels | 0.12–0.17 | 13 | | [F.3427](/materials/une/f-3427 "F.3427") | [1.4057](/materials/material-no/1.4057 "1.4057") | Stainless steels | 0.12–0.22 | 17 | | [F.3427-X15CrNi16](/materials/une/f-3427-x15crni16 "F.3427-X15CrNi16") | [1.4057](/materials/material-no/1.4057 "1.4057") | Stainless steels | 0.12–0.22 | 17 | | [F.3451](/materials/une/f-3451 "F.3451") | [1.4301](/materials/material-no/1.4301 "1.4301") | Stainless steels | ≤ 0.07 | 23 | | [F.3451-X5CrNi18-10](/materials/une/f-3451-x5crni18-10 "F.3451-X5CrNi18-10") | [1.4301](/materials/material-no/1.4301 "1.4301") | Stainless steels | ≤ 0.07 | 23 | | [F.3503](/materials/une/f-3503 "F.3503") | [1.4306](/materials/material-no/1.4306 "1.4306") | Stainless steels | ≤ 0.03 | 18 | | [F.3503-X2CrNi19-10](/materials/une/f-3503-x2crni19-10 "F.3503-X2CrNi19-10") | [1.4306](/materials/material-no/1.4306 "1.4306") | Stainless steels | ≤ 0.03 | 18 | | [F.3504](/materials/une/f-3504 "F.3504") | [1.4301](/materials/material-no/1.4301 "1.4301") | Stainless steels | ≤ 0.07 | 23 | | [F.3504](/materials/une/f-3504 "F.3504") | [1.4305](/materials/material-no/1.4305 "1.4305") | Stainless steels | ≤ 0.1 | 17 | | [F.3507](/materials/une/f-3507 "F.3507") | [1.4300](/materials/material-no/1.4300 "1.4300") | Stainless steels | ≤ 0.12 | 15 | | [F.3508](/materials/une/f-3508 "F.3508") | [1.4305](/materials/material-no/1.4305 "1.4305") | Stainless steels | ≤ 0.1 | 17 | | [F.3508](/materials/une/f-3508 "F.3508") | [1.4300](/materials/material-no/1.4300 "1.4300") | Stainless steels | ≤ 0.12 | 15 | | [F.3508-X10CrNiS](/materials/une/f-3508-x10crnis "F.3508-X10CrNiS") | [1.4305](/materials/material-no/1.4305 "1.4305") | Stainless steels | ≤ 0.1 | 17 | | [F.3513](/materials/une/f-3513 "F.3513") | [1.4303](/materials/material-no/1.4303 "1.4303") | Stainless steels | ≤ 0.06 | 14 | | [F.3513-X8CrNi.18-12](/materials/une/f-3513-x8crni-18-12 "F.3513-X8CrNi.18-12") | [1.4303](/materials/material-no/1.4303 "1.4303") | Stainless steels | ≤ 0.06 | 14 | | [F.3517](/materials/une/f-3517 "F.3517") | [1.4310](/materials/material-no/1.4310 "1.4310") | Stainless steels | 0.05–0.15 | 18 | | [F.3517](/materials/une/f-3517 "F.3517") | [1.4300](/materials/material-no/1.4300 "1.4300") | Stainless steels | ≤ 0.12 | 15 | | [F.3523](/materials/une/f-3523 "F.3523") | [1.4541](/materials/material-no/1.4541 "1.4541") | Stainless steels | ≤ 0.08 | 25 | | [F.3523](/materials/une/f-3523 "F.3523") | [1.4878](/materials/material-no/1.4878 "1.4878") | Heat resistant steels | ≤ 0.1 | 14 | | [F.3523-X 6CrNiTi 18 11](/materials/une/f-3523-x-6crniti-18-11 "F.3523-X 6CrNiTi 18 11") | [1.4878](/materials/material-no/1.4878 "1.4878") | Heat resistant steels | ≤ 0.1 | 14 | | [F.3524](/materials/une/f-3524 "F.3524") | [1.4550](/materials/material-no/1.4550 "1.4550") | Stainless steels | ≤ 0.08 | 15 | **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/une/page/9 "Previous") Page 10 of 16[Next](/materials/une/page/11 "Next")