--- title: "UNI steel grades — 671 designations" description: "Steel grades designated under UNI, with chemical composition, mechanical properties and equivalents in other standards. 671 designations across 331…" canonical: https://steelequivalents.com/materials/uni language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/uni.md cs: https://steelequivalents.com/cs/materiály/uni.md de: https://steelequivalents.com/de/werkstoffe/uni.md es: https://steelequivalents.com/es/materiales/uni.md fr: https://steelequivalents.com/fr/matériaux/uni.md hu: https://steelequivalents.com/hu/anyagok/uni.md it: https://steelequivalents.com/it/materiali/uni.md nl: https://steelequivalents.com/nl/materialen/uni.md pl: https://steelequivalents.com/pl/materiały/uni.md pt: https://steelequivalents.com/pt/materiais/uni.md ru: https://steelequivalents.com/ru/материалы/uni.md tr: https://steelequivalents.com/tr/malzemeler/uni.md zh: https://steelequivalents.com/zh/材料/uni.md ja: https://steelequivalents.com/ja/材料/uni.md ar: https://steelequivalents.com/ar/المواد/uni.md ko: https://steelequivalents.com/ko/재료/uni.md pt-br: https://steelequivalents.com/pt-br/materiais/uni.md hi: https://steelequivalents.com/hi/सामग्री/uni.md content_hash: sha256:ca5b5676c642cf94d73b3b2ff848332f1dcfa189fe30e7333be865872968c42f generated: 2026-09-22 --- > **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/uni > Canonical URL: https://steelequivalents.com/materials/uni > 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. UNI · 671 grades # UNI steel grades — 671 designations Every grade designated under UNI, 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 671 designations | Grade | Material no. | Category | C% by weight | Also in other standards | |---|---|---|---|---| | [(G)X6CrNi304](/materials/uni/g-x6crni304 "(G)X6CrNi304") | [1.4313](/materials/material-no/1.4313 "1.4313") | Stainless steels | ≤ 0.05 | 8 | | [100Cr6](/materials/din-en/100cr6 "100Cr6") | [1.2067](/materials/material-no/1.2067 "1.2067") | Tool steels for cold work | 0.95–1.1 | 21 | | [100Cr6](/materials/din-en/100cr6 "100Cr6") | [1.3505](/materials/material-no/1.3505 "1.3505") | Bearing steels | 0.93–1.05 | 22 | | [100MnCrW4KU](/materials/uni/100mncrw4ku "100MnCrW4KU") | [1.2510](/materials/material-no/1.2510 "1.2510") | Tool steels for cold work | 0.9–1.05 | 13 | | [100WCr6](/materials/uni/100wcr6 "100WCr6") | [1.2419](/materials/material-no/1.2419 "1.2419") | Tool steels for cold work | 1–1.1 | 16 | | [102Cr6KU](/materials/uni/102cr6ku "102Cr6KU") | [1.2067](/materials/material-no/1.2067 "1.2067") | Tool steels for cold work | 0.95–1.1 | 21 | | [107WCr5KU](/materials/uni/107wcr5ku "107WCr5KU") | [1.2419](/materials/material-no/1.2419 "1.2419") | Tool steels for cold work | 1–1.1 | 16 | | [10CrMo9-10](/materials/din-en/10crmo9-10 "10CrMo9-10") | [1.7380](/materials/material-no/1.7380 "1.7380") | Heat-resistant structural steels | 0.08–0.14 | 20 | | [115CrV3KU](/materials/uni/115crv3ku "115CrV3KU") | [1.2210](/materials/material-no/1.2210 "1.2210") | Tool steels for cold work | 1.1–1.25 | 13 | | [12CrMo10](/materials/uni/12crmo10 "12CrMo10") | [1.7380](/materials/material-no/1.7380 "1.7380") | Heat-resistant structural steels | 0.08–0.14 | 20 | | [12CrMo9](/materials/uni/12crmo9 "12CrMo9") | [1.7380](/materials/material-no/1.7380 "1.7380") | Heat-resistant structural steels | 0.08–0.14 | 20 | | [12CrMo9-10](/materials/din-en/12crmo9-10 "12CrMo9-10") | [1.7383](/materials/material-no/1.7383 "1.7383") | Heat-resistant structural steels | 0.08–0.15 | 9 | | [12CrMo9-10](/materials/din-en/12crmo9-10 "12CrMo9-10") | [1.7380](/materials/material-no/1.7380 "1.7380") | Heat-resistant structural steels | 0.08–0.14 | 20 | | [13CrMo4-5](/materials/din-en/13crmo4-5 "13CrMo4-5") | [1.7262](/materials/material-no/1.7262 "1.7262") | Case hardening steels | 0.13–0.17 | 18 | | [13CrMo4-5](/materials/din-en/13crmo4-5 "13CrMo4-5") | [1.7335](/materials/material-no/1.7335 "1.7335") | Heat-resistant structural steels | 0.08–0.18 | 22 | | [14CrMo3](/materials/uni/14crmo3 "14CrMo3") | [1.7335](/materials/material-no/1.7335 "1.7335") | Heat-resistant structural steels | 0.08–0.18 | 22 | | [14CrMo3](/materials/uni/14crmo3 "14CrMo3") | [1.7262](/materials/material-no/1.7262 "1.7262") | Case hardening steels | 0.13–0.17 | 18 | | [14CrMo45](/materials/afnor/14crmo45 "14CrMo45") | [1.7335](/materials/material-no/1.7335 "1.7335") | Heat-resistant structural steels | 0.08–0.18 | 22 | | [14Ni6](/materials/din-en/14ni6 "14Ni6") | [1.5622](/materials/material-no/1.5622 "1.5622") | Low-temperature structural steels | ≤ 0.18 | 6 | | [15Mo3](/materials/din-en/15mo3 "15Mo3") | [1.5415](/materials/material-no/1.5415 "1.5415") | Heat-resistant structural steels | 0.12–0.2 | 15 | | [15NiCrMo13](/materials/uni/15nicrmo13 "15NiCrMo13") | [1.6657](/materials/material-no/1.6657 "1.6657") | Special steels for aviation and aerospace | 0.11–0.17 | 15 | | [15NiCrMo13](/materials/uni/15nicrmo13 "15NiCrMo13") | [1.3343](/materials/material-no/1.3343 "1.3343") | High-speed steels | 0.86–0.94 | 19 | | [16 NiCr 11](/materials/uni/16nicr11 "16 NiCr 11") | [1.5752](/materials/material-no/1.5752 "1.5752") | Case hardening steels | 0.14–0.2 | 15 | | [16 NiCr 11](/materials/uni/16nicr11 "16 NiCr 11") | [1.5752](/materials/material-no/1.5752 "1.5752") | Case hardening steels | 0.14–0.2 | 15 | | [16CrMo3](/materials/uni/16crmo3 "16CrMo3") | [1.7262](/materials/material-no/1.7262 "1.7262") | Case hardening steels | 0.13–0.17 | 18 | | [16CrMo3](/materials/uni/16crmo3 "16CrMo3") | [1.7335](/materials/material-no/1.7335 "1.7335") | Heat-resistant structural steels | 0.08–0.18 | 22 | | [16CrNi4](/materials/uni/16crni4 "16CrNi4") | [1.5715](/materials/material-no/1.5715 "1.5715") | Case hardening steels | 0.13–0.19 | 7 | | [16CrNi4](/materials/uni/16crni4 "16CrNi4") | [1.5714](/materials/material-no/1.5714 "1.5714") | Case hardening steels | 0.13–0.19 | 6 | | [16MnCr5](/materials/din-en/16mncr5 "16MnCr5") | [1.7139](/materials/material-no/1.7139 "1.7139") | Case hardening steels | 0.14–0.19 | 11 | | [16MnCr5](/materials/din-en/16mncr5 "16MnCr5") | [1.7131](/materials/material-no/1.7131 "1.7131") | Case hardening steels | 0.14–0.19 | 24 | | [16Mo3](/materials/din-en/16mo3 "16Mo3") | [1.5415](/materials/material-no/1.5415 "1.5415") | Heat-resistant structural steels | 0.12–0.2 | 15 | | [16Mo3KW](/materials/uni/16mo3kw "16Mo3KW") | [1.5415](/materials/material-no/1.5415 "1.5415") | Heat-resistant structural steels | 0.12–0.2 | 15 | | [16Mo5](/materials/din-en/16mo5 "16Mo5") | [1.5423](/materials/material-no/1.5423 "1.5423") | Heat-resistant structural steels | 0.12–0.2 | 5 | | [16NiCr11](/materials/uni/16nicr11 "16NiCr11") | [1.5732](/materials/material-no/1.5732 "1.5732") | Case hardening steels | 0.1–0.17 | 13 | | [16NiCrMo12](/materials/uni/16nicrmo12 "16NiCrMo12") | [1.6657](/materials/material-no/1.6657 "1.6657") | Special steels for aviation and aerospace | 0.11–0.17 | 15 | | [16NiCrS4](/materials/din-en/16nicrs4 "16NiCrS4") | [1.5715](/materials/material-no/1.5715 "1.5715") | Case hardening steels | 0.13–0.19 | 7 | | [18CrMo4](/materials/din-en/18crmo4 "18CrMo4") | [1.7243](/materials/material-no/1.7243 "1.7243") | Case hardening steels | 0.15–0.21 | 12 | | [18CrMo4](/materials/din-en/18crmo4 "18CrMo4") | [1.7218](/materials/material-no/1.7218 "1.7218") | Quenched and tempered steels | 0.22–0.29 | 25 | | [18CrMo45KG](/materials/uni/18crmo45kg "18CrMo45KG") | [1.7262](/materials/material-no/1.7262 "1.7262") | Case hardening steels | 0.13–0.17 | 18 | | [18CrMo45KW](/materials/uni/18crmo45kw "18CrMo45KW") | [1.7262](/materials/material-no/1.7262 "1.7262") | Case hardening steels | 0.13–0.17 | 18 | | [18NiCrMo5](/materials/uni/18nicrmo5 "18NiCrMo5") | [1.6566](/materials/material-no/1.6566 "1.6566") | Case hardening steels | 0.14–0.2 | 7 | | [18NiCrMo7](/materials/uni/18nicrmo7 "18NiCrMo7") | [1.6587](/materials/material-no/1.6587 "1.6587") | Case hardening steels | 0.15–0.21 | 15 | | [18NiCrMo7](/materials/uni/18nicrmo7 "18NiCrMo7") | [1.6566](/materials/material-no/1.6566 "1.6566") | Case hardening steels | 0.14–0.2 | 7 | | [18NiCrMoS5](/materials/uni/18nicrmos5 "18NiCrMoS5") | [1.6569](/materials/material-no/1.6569 "1.6569") | Case hardening steels | 0.14–0.2 | 1 | | [1C10](/materials/uni/1c10 "1C10") | [1.0301](/materials/material-no/1.0301 "1.0301") | Case hardening steels | 0.07–0.13 | 20 | | [1C35](/materials/afnor/1c35 "1C35") | [1.0501](/materials/material-no/1.0501 "1.0501") | Quenched and tempered steels | 0.32–0.39 | 23 | | [1C45](/materials/afnor/1c45 "1C45") | [1.0503](/materials/material-no/1.0503 "1.0503") | Quenched and tempered steels | 0.42–0.5 | 24 | | [1C50](/materials/uni/1c50 "1C50") | [1.0540](/materials/material-no/1.0540 "1.0540") | Quenched and tempered steels | 0.47–0.55 | 13 | | [1C55](/materials/afnor/1c55 "1C55") | [1.0535](/materials/material-no/1.0535 "1.0535") | Quenched and tempered steels | 0.52–0.6 | 21 | | [1C60](/materials/afnor/1c60 "1C60") | [1.0601](/materials/material-no/1.0601 "1.0601") | Quenched and tempered steels | 0.57–0.65 | 25 | **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. Page 1 of 14[Next](/materials/uni/page/2 "Next")