--- title: "UNI steel grades — 671 designations — Page 4" 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/page/4 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/uni/page/4.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:c68ac4be9dbf6132e4e05f21eb506e3427d7e0cc2399ea6d2049d3e6712ec65d 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/page/4 > Canonical URL: https://steelequivalents.com/materials/uni/page/4 > 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 — Page 4 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 | |---|---|---|---|---| | [60SiCr8](/materials/une/60sicr8 "60SiCr8") | [1.7102](/materials/material-no/1.7102 "1.7102") | Spring steels | 0.51–0.59 | 14 | | [60SiCr8](/materials/une/60sicr8 "60SiCr8") | [1.5092](/materials/material-no/1.5092 "1.5092") | Others | 0.55–0.66 | 8 | | [60SiCr8](/materials/une/60sicr8 "60SiCr8") | [1.7108](/materials/material-no/1.7108 "1.7108") | Spring steels | 0.57–0.65 | 11 | | [60WCrV8KU](/materials/uni/60wcrv8ku "60WCrV8KU") | [1.2550](/materials/material-no/1.2550 "1.2550") | Tool steels for cold work | 0.55–0.65 | 15 | | [80CrV2](/materials/din-en/80crv2 "80CrV2") | [1.2235](/materials/material-no/1.2235 "1.2235") | Tool steels for cold work | 0.75–0.85 | 13 | | [90MnCrV8KU](/materials/uni/90mncrv8ku "90MnCrV8KU") | [1.2842](/materials/material-no/1.2842 "1.2842") | Tool steels for cold work | 0.85–0.95 | 14 | | [90MnVCr8KU](/materials/uni/90mnvcr8ku "90MnVCr8KU") | [1.2842](/materials/material-no/1.2842 "1.2842") | Tool steels for cold work | 0.85–0.95 | 14 | | [95MnWVCr5KU](/materials/uni/95mnwvcr5ku "95MnWVCr5KU") | [1.2825](/materials/material-no/1.2825 "1.2825") | Tool steels for cold work | 0.9–1 | 13 | | [A16CrMo25-5KG](/materials/uni/a16crmo25-5kg "A16CrMo25-5KG") | [1.7362](/materials/material-no/1.7362 "1.7362") | Hydrogen resistant steels | 0.1–0.15 | 13 | | [A16CrMo25-5KW](/materials/uni/a16crmo25-5kw "A16CrMo25-5KW") | [1.7362](/materials/material-no/1.7362 "1.7362") | Hydrogen resistant steels | 0.1–0.15 | 13 | | [A18CrMo4-5KW](/materials/uni/a18crmo4-5kw "A18CrMo4-5KW") | [1.7262](/materials/material-no/1.7262 "1.7262") | Case hardening steels | 0.13–0.17 | 18 | | [AR 309](/materials/uni/ar-309 "AR 309") | [1.4829](/materials/material-no/1.4829 "1.4829") | Others | ≤ 0.14 | 8 | | [B18CrMo4-5KG](/materials/uni/b18crmo4-5kg "B18CrMo4-5KG") | [1.7262](/materials/material-no/1.7262 "1.7262") | Case hardening steels | 0.13–0.17 | 18 | | [B35-10](/materials/uni/b35-10 "B35-10") | [EN-JM1130](/materials/material-no/en-jm1130 "EN-JM1130") | Others | — | 10 | | [C10](/materials/din-en/c10 "C10") | [1.1207](/materials/material-no/1.1207 "1.1207") | Case hardening steels | 0.07–0.13 | 5 | | [C10](/materials/din-en/c10 "C10") | [1.0301](/materials/material-no/1.0301 "1.0301") | Case hardening steels | 0.07–0.13 | 20 | | [C10](/materials/din-en/c10 "C10") | [1.1121](/materials/material-no/1.1121 "1.1121") | Case hardening steels | 0.07–0.13 | 22 | | [C100](/materials/uni/c100 "C100") | [1.1274](/materials/material-no/1.1274 "1.1274") | Spring steels | 0.95–1.05 | 13 | | [C100KU](/materials/uni/c100ku "C100KU") | [1.1535](/materials/material-no/1.1535 "1.1535") | Unalloyed tool steels / carbon steels | 0.85–0.95 | 14 | | [C100KU](/materials/uni/c100ku "C100KU") | [1.1545](/materials/material-no/1.1545 "1.1545") | Unalloyed tool steels / carbon steels | 1–1.1 | 19 | | [C100KU](/materials/uni/c100ku "C100KU") | [1.1645](/materials/material-no/1.1645 "1.1645") | Unalloyed tool steels / carbon steels | 1–1.1 | 18 | | [C120KU](/materials/uni/c120ku "C120KU") | [1.1555](/materials/material-no/1.1555 "1.1555") | Unalloyed tool steels / carbon steels | 1.15–1.25 | 16 | | [C120KU](/materials/uni/c120ku "C120KU") | [1.1545](/materials/material-no/1.1545 "1.1545") | Unalloyed tool steels / carbon steels | 1–1.1 | 19 | | [C120KU](/materials/uni/c120ku "C120KU") | [1.1563](/materials/material-no/1.1563 "1.1563") | Unalloyed tool steels / carbon steels | 1.2–1.35 | 13 | | [C14](/materials/din-en/c14 "C14") | [1.0301](/materials/material-no/1.0301 "1.0301") | Case hardening steels | 0.07–0.13 | 20 | | [C140KU](/materials/uni/c140ku "C140KU") | [1.1563](/materials/material-no/1.1563 "1.1563") | Unalloyed tool steels / carbon steels | 1.2–1.35 | 13 | | [C15](/materials/is/c15 "C15") | [1.1141](/materials/material-no/1.1141 "1.1141") | Case hardening steels | 0.12–0.18 | 20 | | [C15](/materials/is/c15 "C15") | [1.1140](/materials/material-no/1.1140 "1.1140") | Case hardening steels | 0.12–0.18 | 7 | | [C15](/materials/is/c15 "C15") | [1.1121](/materials/material-no/1.1121 "1.1121") | Case hardening steels | 0.07–0.13 | 22 | | [C15](/materials/is/c15 "C15") | [1.0401](/materials/material-no/1.0401 "1.0401") | Case hardening steels | 0.12–0.18 | 23 | | [C16](/materials/din-en/c16 "C16") | [1.0401](/materials/material-no/1.0401 "1.0401") | Case hardening steels | 0.12–0.18 | 23 | | [C16](/materials/din-en/c16 "C16") | [1.1141](/materials/material-no/1.1141 "1.1141") | Case hardening steels | 0.12–0.18 | 20 | | [C165CrMoV12KU](/materials/uni/c165crmov12ku "C165CrMoV12KU") | [1.2379](/materials/material-no/1.2379 "1.2379") | Tool steels for cold work | 1.45–1.6 | 20 | | [C18](/materials/uni/c18 "C18") | [1.0402](/materials/material-no/1.0402 "1.0402") | Quenched and tempered steels | 0.17–0.24 | 24 | | [C18](/materials/uni/c18 "C18") | [1.0436](/materials/material-no/1.0436 "1.0436") | Fine-grain structural steels | 0.15–0.2 | 14 | | [C20](/materials/afnor/c20 "C20") | [1.0402](/materials/material-no/1.0402 "1.0402") | Quenched and tempered steels | 0.17–0.24 | 24 | | [C21](/materials/din-en/c21 "C21") | [1.0402](/materials/material-no/1.0402 "1.0402") | Quenched and tempered steels | 0.17–0.24 | 24 | | [C22](/materials/is/c22 "C22") | [1.0402](/materials/material-no/1.0402 "1.0402") | Quenched and tempered steels | 0.17–0.24 | 24 | | [C22E](/materials/din-en/c22e "C22E") | [1.0406](/materials/material-no/1.0406 "1.0406") | Quenched and tempered steels | 0.22–0.29 | 20 | | [C22E](/materials/din-en/c22e "C22E") | [1.0402](/materials/material-no/1.0402 "1.0402") | Quenched and tempered steels | 0.17–0.24 | 24 | | [C22R](/materials/din-en/c22r "C22R") | [1.0402](/materials/material-no/1.0402 "1.0402") | Quenched and tempered steels | 0.17–0.24 | 24 | | [C22R](/materials/din-en/c22r "C22R") | [1.0406](/materials/material-no/1.0406 "1.0406") | Quenched and tempered steels | 0.22–0.29 | 20 | | [C25](/materials/din-en/c25 "C25") | [1.1151](/materials/material-no/1.1151 "1.1151") | Quenched and tempered steels | 0.17–0.24 | 15 | | [C25](/materials/din-en/c25 "C25") | [1.1149](/materials/material-no/1.1149 "1.1149") | Quenched and tempered steels | 0.17–0.24 | 7 | | [C25](/materials/din-en/c25 "C25") | [1.0402](/materials/material-no/1.0402 "1.0402") | Quenched and tempered steels | 0.17–0.24 | 24 | | [C25](/materials/din-en/c25 "C25") | [1.0406](/materials/material-no/1.0406 "1.0406") | Quenched and tempered steels | 0.22–0.29 | 20 | | [C25E](/materials/din-en/c25e "C25E") | [1.0402](/materials/material-no/1.0402 "1.0402") | Quenched and tempered steels | 0.17–0.24 | 24 | | [C25E](/materials/din-en/c25e "C25E") | [1.0406](/materials/material-no/1.0406 "1.0406") | Quenched and tempered steels | 0.22–0.29 | 20 | | [C25R](/materials/din-en/c25r "C25R") | [1.0406](/materials/material-no/1.0406 "1.0406") | Quenched and tempered steels | 0.22–0.29 | 20 | | [C28Mn](/materials/uni/c28mn "C28Mn") | [1.1170](/materials/material-no/1.1170 "1.1170") | Quenched and tempered steels | 0.25–0.32 | 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/uni/page/3 "Previous") Page 4 of 14[Next](/materials/uni/page/5 "Next")