--- title: "UNE steel grades — 760 designations — Page 16" 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/16 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/une/page/16.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: sha256:1d3e7399ad6ff52df7d6c592f44e91dae5acc031c2528cd79d10f70913fa104b 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/16 > Canonical URL: https://steelequivalents.com/materials/une/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. UNE · 760 grades # UNE steel grades — 760 designations — Page 16 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 | |---|---|---|---|---| | [X6CrNiMoTi17-12-2](/materials/din-en/x6crnimoti17-12-2 "X6CrNiMoTi17-12-2") | [1.4571](/materials/material-no/1.4571 "1.4571") | Stainless steels | ≤ 0.08 | 18 | | [X6CrNiNb18-10](/materials/din-en/x6crninb18-10 "X6CrNiNb18-10") | [1.4550](/materials/material-no/1.4550 "1.4550") | Stainless steels | ≤ 0.08 | 15 | | [X6CrNiTi18-10](/materials/din-en/x6crniti18-10 "X6CrNiTi18-10") | [1.4541](/materials/material-no/1.4541 "1.4541") | Stainless steels | ≤ 0.08 | 25 | | [X8CrNi18-12](/materials/une/x8crni18-12 "X8CrNi18-12") | [1.4303](/materials/material-no/1.4303 "1.4303") | Stainless steels | ≤ 0.06 | 14 | | [X8CrNi25-21](/materials/din-en/x8crni25-21 "X8CrNi25-21") | [1.4845](/materials/material-no/1.4845 "1.4845") | Heat resistant steels | ≤ 0.1 | 21 | | [X8CrNi25-21](/materials/din-en/x8crni25-21 "X8CrNi25-21") | [1.4842](/materials/material-no/1.4842 "1.4842") | Others | ≤ 0.14 | 14 | | [X8CrNiMo26-6](/materials/une/x8crnimo26-6 "X8CrNiMo26-6") | [1.4460](/materials/material-no/1.4460 "1.4460") | Stainless steels | ≤ 0.05 | 10 | | [XBNi09](/materials/une/xbni09 "XBNi09") | [1.5662](/materials/material-no/1.5662 "1.5662") | Low-temperature structural steels | ≤ 0.1 | 8 | | [XBNi09](/materials/une/xbni09 "XBNi09") | [1.5662](/materials/material-no/1.5662 "1.5662") | Low-temperature structural steels | ≤ 0.1 | 6 | | [Х40CrMoV5](/materials/afnor/kh40crmov5 "Х40CrMoV5") | [1.2344](/materials/material-no/1.2344 "1.2344") | Tool steels for hot work | 0.35–0.42 | 20 | **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/15 "Previous") Page 16 of 16