--- title: "UNE steel grades — 760 designations — Page 3" 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/3 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/une/page/3.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:b3bec707153e69e4df5f4a7e4e2e21759daada8d1f6b44a7cbd9b5c93e3c9054 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/3 > Canonical URL: https://steelequivalents.com/materials/une/page/3 > 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 3 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 | |---|---|---|---|---| | [55Cr3](/materials/din-en/55cr3 "55Cr3") | [1.7218](/materials/material-no/1.7218 "1.7218") | Quenched and tempered steels | 0.22–0.29 | 25 | | [55Cr3](/materials/din-en/55cr3 "55Cr3") | [1.7176](/materials/material-no/1.7176 "1.7176") | Spring steels | 0.52–0.59 | 18 | | [55Si7](/materials/din-en/55si7 "55Si7") | [1.5026](/materials/material-no/1.5026 "1.5026") | Spring steels | 0.52–0.6 | 20 | | [56Si7](/materials/din-en/56si7 "56Si7") | [1.5026](/materials/material-no/1.5026 "1.5026") | Spring steels | 0.52–0.6 | 20 | | [6-5-2](/materials/une/6-5-2 "6-5-2") | [1.3343](/materials/material-no/1.3343 "1.3343") | High-speed steels | 0.86–0.94 | 19 | | [6-5-2-5](/materials/afnor/6-5-2-5 "6-5-2-5") | [1.3246](/materials/material-no/1.3246 "1.3246") | High-speed steels | 1.05–1.15 | 5 | | [6-5-2-5](/materials/afnor/6-5-2-5 "6-5-2-5") | [1.3243](/materials/material-no/1.3243 "1.3243") | High-speed steels | 0.87–0.95 | 19 | | [6-5-3](/materials/une/6-5-3 "6-5-3") | [1.3344](/materials/material-no/1.3344 "1.3344") | High-speed steels | 1.15–1.25 | 8 | | [60Si7](/materials/din-en/60si7 "60Si7") | [1.0961](/materials/material-no/1.0961 "1.0961") | High-strength multi-phase steels | ≤ 0.18 | 14 | | [60SiCr8](/materials/une/60sicr8 "60SiCr8") | [1.0961](/materials/material-no/1.0961 "1.0961") | High-strength multi-phase steels | ≤ 0.18 | 14 | | [7-4-2-5](/materials/une/7-4-2-5 "7-4-2-5") | [1.3247](/materials/material-no/1.3247 "1.3247") | High-speed steels | 1.05–1.15 | 14 | | [80CrSiNi20-02](/materials/une/80crsini20-02 "80CrSiNi20-02") | [1.4747](/materials/material-no/1.4747 "1.4747") | Others | 0.75–0.85 | 7 | | [95MnCrW5](/materials/une/95mncrw5 "95MnCrW5") | [1.2825](/materials/material-no/1.2825 "1.2825") | Tool steels for cold work | 0.9–1 | 13 | | [A 37 RC l](/materials/une/a-37-rc-l "A 37 RC l") | [1.0345](/materials/material-no/1.0345 "1.0345") | Heat-resistant structural steels | ≤ 0.16 | 18 | | [A 47 RB II](/materials/une/a-47-rb-ii "A 47 RB II") | [1.0473](/materials/material-no/1.0473 "1.0473") | Heat-resistant structural steels | 0.1–0.22 | 10 | | [A 47 RC1](/materials/une/a-47-rc1 "A 47 RC1") | [1.0481](/materials/material-no/1.0481 "1.0481") | Heat-resistant structural steels | 0.08–0.2 | 17 | | [A-128](/materials/aisi-sae/a128 "A-128") | [1.6510](/materials/material-no/1.6510 "1.6510") | Others | 0.35–0.43 | 7 | | [A-150.E](/materials/une/a-150-e "A-150.E") | [1.5920](/materials/material-no/1.5920 "1.5920") | Case hardening steels | 0.15–0.2 | 6 | | [A-152](/materials/une/a-152 "A-152") | [1.5637](/materials/material-no/1.5637 "1.5637") | Low-temperature structural steels | ≤ 0.15 | 11 | | [A-152](/materials/une/a-152 "A-152") | [1.5639](/materials/material-no/1.5639 "1.5639") | Low-temperature structural steels | 0.12–0.19 | 9 | | [A-1550](/materials/une/a-1550 "A-1550") | [1.7243](/materials/material-no/1.7243 "1.7243") | Case hardening steels | 0.15–0.21 | 12 | | [A-1550](/materials/une/a-1550 "A-1550") | [1.3566](/materials/material-no/1.3566 "1.3566") | Others | 0.12–0.18 | 8 | | [A-5117](/materials/une/a-5117 "A-5117") | [1.1274](/materials/material-no/1.1274 "1.1274") | Spring steels | 0.95–1.05 | 13 | | [A310-0](/materials/une/a310-0 "A310-0") | [1.0035](/materials/material-no/1.0035 "1.0035") | Unalloyed structural steels | — | 22 | | [A360](/materials/une/a360 "A360") | [1.0116](/materials/material-no/1.0116 "1.0116") | Unalloyed structural steels | ≤ 0.17 | 12 | | [A360 C](/materials/une/a360-c "A360 C") | [1.0116](/materials/material-no/1.0116 "1.0116") | Unalloyed structural steels | ≤ 0.17 | 12 | | [A37RCI](/materials/une/a37rci "A37RCI") | [1.0345](/materials/material-no/1.0345 "1.0345") | Heat-resistant structural steels | ≤ 0.16 | 18 | | [A42](/materials/une/a42 "A42") | [1.0425](/materials/material-no/1.0425 "1.0425") | Heat-resistant structural steels | ≤ 0.2 | 20 | | [A42 RC 1](/materials/une/a42-rc-1 "A42 RC 1") | [1.0425](/materials/material-no/1.0425 "1.0425") | Heat-resistant structural steels | ≤ 0.2 | 20 | | [A42RCI](/materials/une/a42rci "A42RCI") | [1.0425](/materials/material-no/1.0425 "1.0425") | Heat-resistant structural steels | ≤ 0.2 | 20 | | [A42RCI](/materials/une/a42rci "A42RCI") | [1.0426](/materials/material-no/1.0426 "1.0426") | Aging resistant steels | 0.08–0.2 | 17 | | [A42RCII](/materials/une/a42rcii "A42RCII") | [1.0426](/materials/material-no/1.0426 "1.0426") | Aging resistant steels | 0.08–0.2 | 17 | | [A42RCII](/materials/une/a42rcii "A42RCII") | [1.0425](/materials/material-no/1.0425 "1.0425") | Heat-resistant structural steels | ≤ 0.2 | 20 | | [A430B](/materials/une/a430b "A430B") | [1.0044](/materials/material-no/1.0044 "1.0044") | Unalloyed structural steels | ≤ 0.21 | 26 | | [A47RCI](/materials/une/a47rci "A47RCI") | [1.0481](/materials/material-no/1.0481 "1.0481") | Heat-resistant structural steels | 0.08–0.2 | 17 | | [A490](/materials/une/a490 "A490") | [1.0050](/materials/material-no/1.0050 "1.0050") | Unalloyed structural steels | — | 23 | | [A490](/materials/une/a490 "A490") | [1.0050](/materials/material-no/1.0050 "1.0050") | Unalloyed structural steels | — | 23 | | [A490-2](/materials/une/a490-2 "A490-2") | [1.0050](/materials/material-no/1.0050 "1.0050") | Unalloyed structural steels | — | 23 | | [A490-2](/materials/une/a490-2 "A490-2") | [1.0050](/materials/material-no/1.0050 "1.0050") | Unalloyed structural steels | — | 23 | | [A510C](/materials/une/a510c "A510C") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 22 | | [A510C](/materials/une/a510c "A510C") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 20 | | [A52RCI](/materials/une/a52rci "A52RCI") | [1.0473](/materials/material-no/1.0473 "1.0473") | Heat-resistant structural steels | 0.1–0.22 | 10 | | [A590](/materials/une/a590 "A590") | [1.0060](/materials/material-no/1.0060 "1.0060") | Unalloyed structural steels | — | 21 | | [A590](/materials/une/a590 "A590") | [1.0060](/materials/material-no/1.0060 "1.0060") | Unalloyed structural steels | — | 21 | | [A590-2](/materials/une/a590-2 "A590-2") | [1.0060](/materials/material-no/1.0060 "1.0060") | Unalloyed structural steels | — | 21 | | [A590-2](/materials/une/a590-2 "A590-2") | [1.0060](/materials/material-no/1.0060 "1.0060") | Unalloyed structural steels | — | 21 | | [A690](/materials/une/a690 "A690") | [1.0070](/materials/material-no/1.0070 "1.0070") | Unalloyed structural steels | — | 16 | | [A690](/materials/une/a690 "A690") | [1.0070](/materials/material-no/1.0070 "1.0070") | Unalloyed structural steels | — | 16 | | [A690-2](/materials/une/a690-2 "A690-2") | [1.0070](/materials/material-no/1.0070 "1.0070") | Unalloyed structural steels | — | 16 | | [A690-2](/materials/une/a690-2 "A690-2") | [1.0070](/materials/material-no/1.0070 "1.0070") | Unalloyed structural steels | — | 16 | **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/2 "Previous") Page 3 of 16[Next](/materials/une/page/4 "Next")