--- title: "UNE steel grades — 760 designations — Page 9" 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/9 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/une/page/9.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: sha256:98d47d1e7efc0f338641b26730316694fbf01b62f8f88aee33f0839a665ccc23 generated: 2026-09-24 --- > **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/9 > Canonical URL: https://steelequivalents.com/materials/une/page/9 > 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 9 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.2631 -14CrMo4 5](/materials/une/f-2631-14crmo4-5 "F.2631 -14CrMo4 5") | [1.7335](/materials/material-no/1.7335 "1.7335") | Heat-resistant structural steels | 0.08–0.18 | 22 | | [F.2641](/materials/une/f-2641 "F.2641") | [1.5622](/materials/material-no/1.5622 "1.5622") | Low-temperature structural steels | ≤ 0.18 | 6 | | [F.2641 -15 Ni 6](/materials/une/f-2641-15-ni-6 "F.2641 -15 Ni 6") | [1.5622](/materials/material-no/1.5622 "1.5622") | Low-temperature structural steels | ≤ 0.18 | 6 | | [F.2645](/materials/une/f-2645 "F.2645") | [1.5662](/materials/material-no/1.5662 "1.5662") | Low-temperature structural steels | ≤ 0.1 | 8 | | [F.2645](/materials/une/f-2645 "F.2645") | [1.5662](/materials/material-no/1.5662 "1.5662") | Low-temperature structural steels | ≤ 0.1 | 6 | | [F.310.A](/materials/une/f-310-a "F.310.A") | [1.4401](/materials/material-no/1.4401 "1.4401") | Stainless steels | ≤ 0.07 | 20 | | [F.310.B](/materials/une/f-310-b "F.310.B") | [1.4571](/materials/material-no/1.4571 "1.4571") | Stainless steels | ≤ 0.08 | 18 | | [F.310.C](/materials/une/f-310-c "F.310.C") | [1.4305](/materials/material-no/1.4305 "1.4305") | Stainless steels | ≤ 0.1 | 17 | | [F.310.D](/materials/une/f-310-d "F.310.D") | [1.4016](/materials/material-no/1.4016 "1.4016") | Stainless steels | ≤ 0.08 | 18 | | [F.310.G](/materials/une/f-310-g "F.310.G") | [1.4306](/materials/material-no/1.4306 "1.4306") | Stainless steels | ≤ 0.03 | 18 | | [F.310.J](/materials/une/f-310-j "F.310.J") | [1.4021](/materials/material-no/1.4021 "1.4021") | Stainless steels | 0.16–0.25 | 18 | | [F.310.K](/materials/une/f-310-k "F.310.K") | [1.4404](/materials/material-no/1.4404 "1.4404") | Stainless steels | ≤ 0.03 | 25 | | [F.311](/materials/une/f-311 "F.311") | [1.4724](/materials/material-no/1.4724 "1.4724") | Heat resistant steels | ≤ 0.12 | 15 | | [F.3110](/materials/une/f-3110 "F.3110") | [1.4000](/materials/material-no/1.4000 "1.4000") | Stainless steels | ≤ 0.08 | 16 | | [F.3111](/materials/une/f-3111 "F.3111") | [1.4002](/materials/material-no/1.4002 "1.4002") | Stainless steels | ≤ 0.08 | 13 | | [F.3111-X6CrAI13](/materials/une/f-3111-x6crai13 "F.3111-X6CrAI13") | [1.4002](/materials/material-no/1.4002 "1.4002") | Stainless steels | ≤ 0.08 | 13 | | [F.3113](/materials/une/f-3113 "F.3113") | [1.4016](/materials/material-no/1.4016 "1.4016") | Stainless steels | ≤ 0.08 | 18 | | [F.3113](/materials/une/f-3113 "F.3113") | [1.4742](/materials/material-no/1.4742 "1.4742") | Heat resistant steels | ≤ 0.12 | 17 | | [F.3113-X8Cr17](/materials/une/f-3113-x8cr17 "F.3113-X8Cr17") | [1.4016](/materials/material-no/1.4016 "1.4016") | Stainless steels | ≤ 0.08 | 18 | | [F.3114](/materials/une/f-3114 "F.3114") | [1.4105](/materials/material-no/1.4105 "1.4105") | Stainless steels | ≤ 0.08 | 10 | | [F.3114](/materials/une/f-3114 "F.3114") | [1.4510](/materials/material-no/1.4510 "1.4510") | Stainless steels | ≤ 0.05 | 14 | | [F.3115](/materials/une/f-3115 "F.3115") | [1.4510](/materials/material-no/1.4510 "1.4510") | Stainless steels | ≤ 0.05 | 14 | | [F.3116](/materials/une/f-3116 "F.3116") | [1.4113](/materials/material-no/1.4113 "1.4113") | Stainless steels | ≤ 0.08 | 10 | | [F.3117](/materials/une/f-3117 "F.3117") | [1.4104](/materials/material-no/1.4104 "1.4104") | Stainless steels | 0.1–0.17 | 13 | | [F.3117-X10CrS17](/materials/une/f-3117-x10crs17 "F.3117-X10CrS17") | [1.4104](/materials/material-no/1.4104 "1.4104") | Stainless steels | 0.1–0.17 | 13 | | [F.3121](/materials/une/f-3121 "F.3121") | [1.4512](/materials/material-no/1.4512 "1.4512") | Stainless steels | ≤ 0.03 | 10 | | [F.3122](/materials/une/f-3122 "F.3122") | [1.4511](/materials/material-no/1.4511 "1.4511") | Stainless steels | ≤ 0.05 | 11 | | [F.3123](/materials/une/f-3123 "F.3123") | [1.4521](/materials/material-no/1.4521 "1.4521") | Stainless steels | ≤ 0.025 | 9 | | [F.313](/materials/une/f-313 "F.313") | [1.4057](/materials/material-no/1.4057 "1.4057") | Stainless steels | 0.12–0.22 | 17 | | [F.3152](/materials/une/f-3152 "F.3152") | [1.4724](/materials/material-no/1.4724 "1.4724") | Heat resistant steels | ≤ 0.12 | 15 | | [F.3153](/materials/une/f-3153 "F.3153") | [1.4742](/materials/material-no/1.4742 "1.4742") | Heat resistant steels | ≤ 0.12 | 17 | | [F.3153-X10CrAI 18](/materials/une/f-3153-x10crai-18 "F.3153-X10CrAI 18") | [1.4742](/materials/material-no/1.4742 "1.4742") | Heat resistant steels | ≤ 0.12 | 17 | | [F.3154](/materials/une/f-3154 "F.3154") | [1.4762](/materials/material-no/1.4762 "1.4762") | Heat resistant steels | ≤ 0.12 | 12 | | [F.3154-X10CrAI24](/materials/une/f-3154-x10crai24 "F.3154-X10CrAI24") | [1.4762](/materials/material-no/1.4762 "1.4762") | Heat resistant steels | ≤ 0.12 | 12 | | [F.320.C](/materials/une/f-320-c "F.320.C") | [1.4873](/materials/material-no/1.4873 "1.4873") | Valve steels | 0.4–0.5 | 11 | | [F.320B](/materials/une/f-320b "F.320B") | [1.4747](/materials/material-no/1.4747 "1.4747") | Others | 0.75–0.85 | 7 | | [F.3211](/materials/une/f-3211 "F.3211") | [1.4873](/materials/material-no/1.4873 "1.4873") | Valve steels | 0.4–0.5 | 11 | | [F.3211-X45CrNiSiW](/materials/une/f-3211-x45crnisiw "F.3211-X45CrNiSiW") | [1.4873](/materials/material-no/1.4873 "1.4873") | Valve steels | 0.4–0.5 | 11 | | [F.3214](/materials/une/f-3214 "F.3214") | [1.4875](/materials/material-no/1.4875 "1.4875") | Valve steels | 0.5–0.6 | 4 | | [F.3217](/materials/une/f-3217 "F.3217") | [1.4871](/materials/material-no/1.4871 "1.4871") | Valve steels | 0.48–0.58 | 17 | | [F.3217-X 53 CrMnln 21-09](/materials/une/f-3217-x-53-crmnln-21-09 "F.3217-X 53 CrMnln 21-09") | [1.4871](/materials/material-no/1.4871 "1.4871") | Valve steels | 0.48–0.58 | 17 | | [F.322](/materials/une/f-322 "F.322") | [1.4718](/materials/material-no/1.4718 "1.4718") | Valve steels | 0.4–0.5 | 16 | | [F.322](/materials/une/f-322 "F.322") | [1.4718](/materials/material-no/1.4718 "1.4718") | Others | 0.4–0.5 | 16 | | [F.322 (s](/materials/une/f-322-s "F.322 (s") | [1.4718](/materials/material-no/1.4718 "1.4718") | Valve steels | 0.4–0.5 | 16 | | [F.322 (s](/materials/une/f-322-s "F.322 (s") | [1.4718](/materials/material-no/1.4718 "1.4718") | Others | 0.4–0.5 | 16 | | [F.3220](/materials/une/f-3220 "F.3220") | [1.4718](/materials/material-no/1.4718 "1.4718") | Valve steels | 0.4–0.5 | 16 | | [F.3220](/materials/une/f-3220 "F.3220") | [1.4718](/materials/material-no/1.4718 "1.4718") | Others | 0.4–0.5 | 16 | | [F.3220-X 4 ScrSi 09-03](/materials/une/f-3220-x-4-scrsi-09-03 "F.3220-X 4 ScrSi 09-03") | [1.4718](/materials/material-no/1.4718 "1.4718") | Valve steels | 0.4–0.5 | 16 | | [F.3220-X 4 ScrSi 09-03](/materials/une/f-3220-x-4-scrsi-09-03 "F.3220-X 4 ScrSi 09-03") | [1.4718](/materials/material-no/1.4718 "1.4718") | Others | 0.4–0.5 | 16 | | [F.3221](/materials/une/f-3221 "F.3221") | [1.4731](/materials/material-no/1.4731 "1.4731") | Valve steels | 0.35–0.45 | 12 | **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/8 "Previous") Page 9 of 16[Next](/materials/une/page/10 "Next")