--- title: "UNI steel grades — 671 designations — Page 6" 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/6 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/uni/page/6.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:e5985df2c652546bc44d5f58b9a0cc0406522581d131275f83f7be3e779c2a2b 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/uni/page/6 > Canonical URL: https://steelequivalents.com/materials/uni/page/6 > 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 6 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 | |---|---|---|---|---| | [C60](/materials/din-en/c60 "C60") | [1.0601](/materials/material-no/1.0601 "1.0601") | Quenched and tempered steels | 0.57–0.65 | 25 | | [C60E](/materials/din-en/c60e "C60E") | [1.0601](/materials/material-no/1.0601 "1.0601") | Quenched and tempered steels | 0.57–0.65 | 25 | | [C60R](/materials/din-en/c60r "C60R") | [1.0601](/materials/material-no/1.0601 "1.0601") | Quenched and tempered steels | 0.57–0.65 | 25 | | [C67](/materials/din-en/c67 "C67") | [1.0612](/materials/material-no/1.0612 "1.0612") | Others | 0.63–0.68 | 12 | | [C70](/materials/uni/c70 "C70") | [1.1231](/materials/material-no/1.1231 "1.1231") | Spring steels | 0.65–0.73 | 18 | | [C70KU](/materials/uni/c70ku "C70KU") | [1.1520](/materials/material-no/1.1520 "1.1520") | Unalloyed tool steels / carbon steels | 0.65–0.75 | 11 | | [C70KU](/materials/uni/c70ku "C70KU") | [1.1620](/materials/material-no/1.1620 "1.1620") | Unalloyed tool steels / carbon steels | 0.65–0.74 | 14 | | [C80KU](/materials/uni/c80ku "C80KU") | [1.1525](/materials/material-no/1.1525 "1.1525") | Unalloyed tool steels / carbon steels | 0.75–0.85 | 20 | | [C80KU](/materials/uni/c80ku "C80KU") | [1.1625](/materials/material-no/1.1625 "1.1625") | Unalloyed tool steels / carbon steels | 0.75–0.85 | 15 | | [C85](/materials/din-en/c85 "C85") | [1.1269](/materials/material-no/1.1269 "1.1269") | Spring steels | 0.8–0.9 | 14 | | [C90](/materials/uni/c90 "C90") | [1.1269](/materials/material-no/1.1269 "1.1269") | Spring steels | 0.8–0.9 | 14 | | [C90](/materials/uni/c90 "C90") | [1.1217](/materials/material-no/1.1217 "1.1217") | Others | 0.85–0.95 | 6 | | [C90](/materials/uni/c90 "C90") | [1.2018](/materials/material-no/1.2018 "1.2018") | Tool steels for cold work | 0.9–1 | 4 | | [C90KU](/materials/uni/c90ku "C90KU") | [1.1525](/materials/material-no/1.1525 "1.1525") | Unalloyed tool steels / carbon steels | 0.75–0.85 | 20 | | [C90KU](/materials/uni/c90ku "C90KU") | [1.1830](/materials/material-no/1.1830 "1.1830") | Unalloyed tool steels / carbon steels | 0.8–0.9 | 10 | | [CB 15](/materials/uni/cb-15 "CB 15") | [1.0234](/materials/material-no/1.0234 "1.0234") | Unalloyed structural steels | 0.13–0.17 | 7 | | [CF10Pb20](/materials/uni/cf10pb20 "CF10Pb20") | [1.0722](/materials/material-no/1.0722 "1.0722") | Free cutting steels | 0.07–0.13 | 5 | | [CF10S20](/materials/uni/cf10s20 "CF10S20") | [1.0721](/materials/material-no/1.0721 "1.0721") | Free cutting steels | 0.07–0.13 | 15 | | [CF35SMn10](/materials/uni/cf35smn10 "CF35SMn10") | [1.0726](/materials/material-no/1.0726 "1.0726") | Free cutting steels | 0.32–0.39 | 15 | | [CF35SMnPb](/materials/uni/cf35smnpb "CF35SMnPb") | [1.0760](/materials/material-no/1.0760 "1.0760") | Free cutting steels | 0.35–0.4 | 2 | | [CF35SMnPb10](/materials/uni/cf35smnpb10 "CF35SMnPb10") | [1.0765](/materials/material-no/1.0765 "1.0765") | Free cutting steels | 0.32–0.39 | 2 | | [CF44SMn28](/materials/uni/cf44smn28 "CF44SMn28") | [1.0762](/materials/material-no/1.0762 "1.0762") | Free cutting steels | 0.4–0.48 | 20 | | [CF9SMn28](/materials/uni/cf9smn28 "CF9SMn28") | [1.0715](/materials/material-no/1.0715 "1.0715") | Free cutting steels | ≤ 0.14 | 14 | | [CF9SMn36](/materials/uni/cf9smn36 "CF9SMn36") | [1.0736](/materials/material-no/1.0736 "1.0736") | Free cutting steels | ≤ 0.14 | 11 | | [CF9SMnPb28](/materials/uni/cf9smnpb28 "CF9SMnPb28") | [1.0718](/materials/material-no/1.0718 "1.0718") | Free cutting steels | ≤ 0.14 | 11 | | [CF9SMnPb36](/materials/uni/cf9smnpb36 "CF9SMnPb36") | [1.0737](/materials/material-no/1.0737 "1.0737") | Free cutting steels | ≤ 0.14 | 8 | | [DC01](/materials/din-en/dc01 "DC01") | [1.0338](/materials/material-no/1.0338 "1.0338") | Unalloyed structural steels | ≤ 0.08 | 18 | | [DC01](/materials/din-en/dc01 "DC01") | [1.0322](/materials/material-no/1.0322 "1.0322") | Unalloyed structural steels | ≤ 0.12 | 17 | | [DC03](/materials/gb/dc03 "DC03") | [1.0338](/materials/material-no/1.0338 "1.0338") | Unalloyed structural steels | ≤ 0.08 | 18 | | [DC04](/materials/din-en/dc04 "DC04") | [1.0338](/materials/material-no/1.0338 "1.0338") | Unalloyed structural steels | ≤ 0.08 | 18 | | [E 335 Fe 590](/materials/uni/e-335-fe-590 "E 335 Fe 590") | [1.0060](/materials/material-no/1.0060 "1.0060") | Unalloyed structural steels | — | 21 | | [E295](/materials/din-en/e295 "E295") | [1.0050](/materials/material-no/1.0050 "1.0050") | Unalloyed structural steels | — | 23 | | [E295](/materials/din-en/e295 "E295") | [1.0050](/materials/material-no/1.0050 "1.0050") | Unalloyed structural steels | — | 23 | | [E335](/materials/din-en/e335 "E335") | [1.0580](/materials/material-no/1.0580 "1.0580") | Unalloyed structural steels | ≤ 0.22 | 10 | | [E335](/materials/din-en/e335 "E335") | [1.0060](/materials/material-no/1.0060 "1.0060") | Unalloyed structural steels | — | 21 | | [E335](/materials/din-en/e335 "E335") | [1.0060](/materials/material-no/1.0060 "1.0060") | Unalloyed structural steels | — | 21 | | [E4](/materials/din-en/e4 "E4") | [1.1274](/materials/material-no/1.1274 "1.1274") | Spring steels | 0.95–1.05 | 13 | | [EVM11](/materials/uni/evm11 "EVM11") | [1.4718](/materials/material-no/1.4718 "1.4718") | Others | 0.4–0.5 | 16 | | [FC35](/materials/jis/fc35 "FC35") | [EN-JL1060](/materials/material-no/en-jl1060 "EN-JL1060") | Others | — | 21 | | [Fe320](/materials/uni/fe320 "Fe320") | [1.0035](/materials/material-no/1.0035 "1.0035") | Unalloyed structural steels | — | 22 | | [Fe330](/materials/uni/fe330 "Fe330") | [1.0028](/materials/material-no/1.0028 "1.0028") | Unalloyed structural steels | ≤ 0.15 | 18 | | [Fe360](/materials/uni/fe360 "Fe360") | [1.0308](/materials/material-no/1.0308 "1.0308") | Unalloyed structural steels | ≤ 0.17 | 10 | | [Fe360](/materials/uni/fe360 "Fe360") | [1.0301](/materials/material-no/1.0301 "1.0301") | Case hardening steels | 0.07–0.13 | 20 | | [Fe360-1KG](/materials/uni/fe360-1kg "Fe360-1KG") | [1.0345](/materials/material-no/1.0345 "1.0345") | Heat-resistant structural steels | ≤ 0.16 | 18 | | [Fe360-1KG](/materials/uni/fe360-1kg "Fe360-1KG") | [1.8945](/materials/material-no/1.8945 "1.8945") | Weathering steels | ≤ 0.12 | 16 | | [Fe360-1KW](/materials/uni/fe360-1kw "Fe360-1KW") | [1.0345](/materials/material-no/1.0345 "1.0345") | Heat-resistant structural steels | ≤ 0.16 | 18 | | [Fe360-2KG](/materials/uni/fe360-2kg "Fe360-2KG") | [1.8945](/materials/material-no/1.8945 "1.8945") | Weathering steels | ≤ 0.12 | 16 | | [Fe360-2KW](/materials/uni/fe360-2kw "Fe360-2KW") | [1.0112](/materials/material-no/1.0112 "1.0112") | Unalloyed structural steels | ≤ 0.16 | 5 | | [FE360B](/materials/une/fe360b "FE360B") | [1.0038](/materials/material-no/1.0038 "1.0038") | Unalloyed structural steels | ≤ 0.17 | 26 | | [Fe360B](/materials/une/fe360b "Fe360B") | [1.0036](/materials/material-no/1.0036 "1.0036") | Unalloyed structural steels | ≤ 0.17 | 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/uni/page/5 "Previous") Page 6 of 14[Next](/materials/uni/page/7 "Next")