--- title: "C 0.85 — Unalloyed tool steels / carbon steels" description: "C 0.85 in AISI / SAE: material number 1.1625, also listed as C80W2. Category: Unalloyed tool steels / carbon steels. Designations recorded for this grade: 27." canonical: https://steelequivalents.com/materials/aisi-sae/c-0-85 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/aisi-sae/c-0-85.md cs: https://steelequivalents.com/cs/materiály/aisi-sae/c-0-85.md de: https://steelequivalents.com/de/werkstoffe/aisi-sae/c-0-85.md es: https://steelequivalents.com/es/materiales/aisi-sae/c-0-85.md fr: https://steelequivalents.com/fr/matériaux/aisi-sae/c-0-85.md hu: https://steelequivalents.com/hu/anyagok/aisi-sae/c-0-85.md it: https://steelequivalents.com/it/materiali/aisi-sae/c-0-85.md nl: https://steelequivalents.com/nl/materialen/aisi-sae/c-0-85.md pl: https://steelequivalents.com/pl/materiały/aisi-sae/c-0-85.md pt: https://steelequivalents.com/pt/materiais/aisi-sae/c-0-85.md ru: https://steelequivalents.com/ru/материалы/aisi-sae/c-0-85.md tr: https://steelequivalents.com/tr/malzemeler/aisi-sae/c-0-85.md zh: https://steelequivalents.com/zh/材料/aisi-sae/c-0-85.md ja: https://steelequivalents.com/ja/材料/aisi-sae/c-0-85.md ar: https://steelequivalents.com/ar/المواد/aisi-sae/c-0-85.md ko: https://steelequivalents.com/ko/재료/aisi-sae/c-0-85.md pt-br: https://steelequivalents.com/pt-br/materiais/aisi-sae/c-0-85.md hi: https://steelequivalents.com/hi/सामग्री/aisi-sae/c-0-85.md content_hash: sha256:ac20c5b6faa66b43d0fcef4cbfa06f7a0f25bb7609a285eebb3eb4474e632dd2 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/aisi-sae/c-0-85 > Canonical URL: https://steelequivalents.com/materials/aisi-sae/c-0-85 > 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. AISI / SAE · United States · 27 designations # C 0.85 C 0.85 is a designation in AISI / SAE for the material held under material number 1.1625, also listed as C80W2. It is a material in the category Unalloyed tool steels / carbon steels. We list 27 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, BS, AFNOR, UNE, ISO, JIS, GB, GOST, UNI, ČSN, PN, STAS, ÖNORM and KS. - [*Material no.* **1.1625**](/materials/material-no/1.1625 "Material no.: 1.1625") - [*Category* **Unalloyed tool steels / carbon steels · 35 grades**](/categories/unalloyed-tool-steels-carbon-steels "Category: Unalloyed tool steels / carbon steels · 35 grades") - *Designations* **27** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=66ed16ea-afea-4fbf-8caa-bc3c4b1add65&designation=dc85c217-d103-4616-aba5-805031b53e29 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/aisi-sae/c-0-85.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN C80W2 This grade’s own name · 2 grades on that route](/materials/din-en/c80w2 "DIN / EN C80W2") - [KS SKC3 This grade’s own name](/materials/ks/skc3 "KS SKC3") ## About Unalloyed tool steels / carbon steels Unalloyed tool steels are carbon steels whose working properties are developed primarily through carbon content and heat treatment. They are characterised by high attainable hardness and wear resistance, and are used for cutting tools, punches, dies, gauges and other tooling where edge retention and resistance to deformation are important. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 27 designations · 16 standards · nothing hidden 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. DIN / EN Europe · 1 - [C80W2 This grade’s own name](/materials/din-en/c80w2 "DIN / EN C80W2") UNS United States · 1 - [T72301 Indicative](/materials/uns/t72301 "UNS T72301") AISI / SAE United States · 3 - **C 0.85 Indicative** - [W 1 Indicative](/materials/aisi-sae/w1 "AISI / SAE W 1") - [W1-7 Indicative](/materials/aisi-sae/w1-7 "AISI / SAE W1-7") BS United Kingdom · 2 - [BW1A Indicative](/materials/bs/bw1a "BS BW1A") - [BW1B Indicative](/materials/bs/bw1b "BS BW1B") AFNOR France · 4 - [C90E2U Indicative](/materials/afnor/c90e2u "AFNOR C90E2U") - [Y1-70 Indicative](/materials/afnor/y1-70 "AFNOR Y1-70") - [Y1-80 Indicative](/materials/afnor/y180 "AFNOR Y1-80") - [Y90 Indicative](/materials/afnor/y90 "AFNOR Y90") UNE Spain · 1 - [F-513 Indicative](/materials/une/f-513 "UNE F-513") ISO International · 1 - [C80U Indicative](/materials/din-en/c80u "ISO C80U") JIS Japan · 3 - [SK5 Indicative](/materials/jis/sk5 "JIS SK5") - [SK6 Indicative](/materials/jis/sk6 "JIS SK6") - [SKC3 Indicative](/materials/ks/skc3 "JIS SKC3") GB China · 1 - [T8 Indicative](/materials/gb/t8 "GB T8") GOST Russia / CIS · 3 - [U8 Indicative](/materials/gost/u8 "GOST U8") - [U8A Indicative](/materials/gost/u8a "GOST U8A") - [У8 Indicative](/materials/gost/u8 "GOST У8") UNI Italy · 1 - [C80KU Indicative](/materials/uni/c80ku "UNI C80KU") ČSN Czechia · 1 - [19 152 Indicative](/materials/csn/19152 "ČSN 19 152") PN Poland · 2 - [N8 Indicative](/materials/pn/n8 "PN N8") - [N8E Indicative](/materials/pn/n8e "PN N8E") STAS Romania · 1 - [OSC8 Indicative](/materials/stas/osc8 "STAS OSC8") ÖNORM Austria · 1 - [K980 Indicative](/materials/onorm/k980 "ÖNORM K980") KS South Korea · 1 - [SKC3 This grade’s own name](/materials/ks/skc3 "KS SKC3") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 5 elements on file · weight % What this alloy is Fe C Mn Si Iron — the balance, never listed by a standard — 98.7 % C — 0.8 % Mn — 0.2 % Si — 0.2 % Traces & impurities · 0.1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.75–0.85 | | Si | 0.1–0.3 | | Mn | 0.1–0.35 | | P | 0.03 | | S | 0.03 | Carbon Silicon Manganese Phosphorus Sulfur 0.01 % 0.1 % 1 % 10 % 100 % The scale is logarithmic, not the element’s raw share of the alloy — the only honest way to fit 0.01 % and 100 % in one picture, and it means every value here can be compared with every other. | Element | As published source text, verbatim | Min% by weight | Max% by weight | Bound | |---|---|---|---|---| | C | 0,75-0,85 | 0.750 | 0.850 | Range | | Si | 0,10-0,30 | 0.100 | 0.300 | Range | | P | 0,03 | 0.030 | 0.030 | Exact | | S | 0,03 | 0.030 | 0.030 | Exact | | Mn | 0,10-0,35 | 0.100 | 0.350 | Range | The published column is the source string byte-for-byte, decimal comma and all; Min and Max are the parsed bounds. Elements not listed have no value on file — they are omitted, never inferred. ## Predicted transformation temperatures Not enough recorded composition to predict a transformation temperature for this grade — missing: Ni, Cr, Mo. ## Physical & mechanical properties Density 7,85 g/cm³ Exact An absent property means we hold no value for it — it is left out rather than estimated, interpolated from a neighbouring grade, or filled from a handbook. It does not mean the property is undefined for the material. ## Similar grades — and why Selection rule, stated so you can disagree with it: same number class 1.1, a shared category, and a published range for Mn / Si that overlaps this grade’s. These are neighbours in composition space — they are not equivalents, and none is claimed to be interchangeable with this grade. [C110U 1.1554 Mn 0,10-0,35 · Si 0,10-0,30 - ΔMn 0.00 - ΔSi 0.00 - 9 designations](/materials/din-en/c110u "C110U")[C125U 1.1563 Mn 0,10-0,35 · Si 0,10-0,30 - ΔMn 0.00 - ΔSi 0.00 - 32 designations](/materials/din-en/c125u "C125U")[C135U 1.1573 Mn 0,10-0,35 · Si 0,10-0,30 - ΔMn 0.00 - ΔSi 0.00 - 3 designations](/materials/din-en/c135u "C135U")[C70W2 1.1620 Mn 0,10-0,35 · Si 0,10-0,30 - ΔMn 0.00 - ΔSi 0.00 - 26 designations](/materials/din-en/c70w2 "C70W2")[C105W2 1.1645 Mn 0,10-0,35 · Si 0,10-0,30 - ΔMn 0.00 - ΔSi 0.00 - 45 designations](/materials/din-en/c105w2 "C105W2")[1.1620 1.1520 Mn 0,10-0,40 · Si 0,10-0,30 - ΔMn 0.03 - ΔSi 0.00 - 21 designations](/materials/material-no/1.1620 "1.1620") ## Looking for this grade under another name? Search the catalogue by designation, material number or composition — every name on this page is itself a way in. [Search](/search "Steel grade search")[Inquiry](/inquiry?material=66ed16ea-afea-4fbf-8caa-bc3c4b1add65&designation=dc85c217-d103-4616-aba5-805031b53e29 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/aisi-sae/c-0-85.pdf "Datasheet as PDF")