--- title: "HS9-4-3-11 — High-speed steels" description: "HS9-4-3-11: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/din-en/hs9-4-3-11 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/din-en/hs9-4-3-11.md cs: https://steelequivalents.com/cs/materiály/din-en/hs9-4-3-11.md de: https://steelequivalents.com/de/werkstoffe/din-en/hs9-4-3-11.md es: https://steelequivalents.com/es/materiales/din-en/hs9-4-3-11.md fr: https://steelequivalents.com/fr/matériaux/din-en/hs9-4-3-11.md hu: https://steelequivalents.com/hu/anyagok/din-en/hs9-4-3-11.md it: https://steelequivalents.com/it/materiali/din-en/hs9-4-3-11.md nl: https://steelequivalents.com/nl/materialen/din-en/hs9-4-3-11.md pl: https://steelequivalents.com/pl/materiały/din-en/hs9-4-3-11.md pt: https://steelequivalents.com/pt/materiais/din-en/hs9-4-3-11.md ru: https://steelequivalents.com/ru/материалы/din-en/hs9-4-3-11.md tr: https://steelequivalents.com/tr/malzemeler/din-en/hs9-4-3-11.md zh: https://steelequivalents.com/zh/材料/din-en/hs9-4-3-11.md ja: https://steelequivalents.com/ja/材料/din-en/hs9-4-3-11.md ar: https://steelequivalents.com/ar/المواد/din-en/hs9-4-3-11.md ko: https://steelequivalents.com/ko/재료/din-en/hs9-4-3-11.md pt-br: https://steelequivalents.com/pt-br/materiais/din-en/hs9-4-3-11.md hi: https://steelequivalents.com/hi/सामग्री/din-en/hs9-4-3-11.md content_hash: sha256:062962d051f00a949c8b995ac43902554dab68307c8f3c7bda8d54ea0f363dfa generated: 2026-09-21 --- > **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/din-en/hs9-4-3-11 > Canonical URL: https://steelequivalents.com/materials/din-en/hs9-4-3-11 > 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. DIN / EN · Europe · 1 designation # HS9-4-3-11 HS9-4-3-11 is a material in the category [High-speed steels](/categories/high-speed-steels "High-speed steels"), held under material number 1.3208. Its recorded composition includes C 1.35–1.45%, Cr 3.7–4.4%, Co 10.5–11.5%, Mo 3.4–3.8% and W 8.4–9.1%. No cross-standard equivalents are recorded for this grade yet. Its recorded density is 8.2 g/cm³. - [*Material no.* **1.3208**](/materials/material-no/1.3208 "Material no.: 1.3208") - [*Category* **High-speed steels · 59 grades**](/categories/high-speed-steels "Category: High-speed steels · 59 grades") - *Designations* **1** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=b9b068ad-eb5d-4d3e-807e-92c741830acf&designation=135cbb5b-8758-41eb-870b-264d238111d8 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/hs9-4-3-11.pdf "Datasheet as PDF") ## About High-speed steels High-speed steels are alloyed tool steels designed to retain hardness and cutting ability when tools heat up during high-speed machining. Their hot hardness and wear resistance make them suitable for cutting tools such as drills, milling cutters, taps and broaches. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Chemical composition 10 elements on file · weight % What this alloy is Fe Co W Cr Iron — the balance, never listed by a standard — 66.8 % Co — 11 % W — 8.8 % Cr — 4.1 % Traces & impurities · 9.4 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 1.35–1.45 | | Si | ≤ 0.5 | | Mn | ≤ 0.4 | | P | 0.03 | | S | 0.03 | | Cr | 3.7–4.4 | | Mo | 3.4–3.8 | | V | 3.2–3.6 | | W | 8.4–9.1 | | Co | 10.5–11.5 — Unusual | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Vanadium Tungsten Cobalt 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 | 1,35-1,45 | 1.350 | 1.450 | Range | | Si | ≤0,50 | — | 0.500 | Max | | P | 0,03 | 0.030 | 0.030 | Exact | | S | 0,03 | 0.030 | 0.030 | Exact | | V | 3,20-3,60 | 3.200 | 3.600 | Range | | Cr | 3,70-4,40 | 3.700 | 4.400 | Range | | Mn | ≤0,40 | — | 0.400 | Max | | Co | 10,5-11,5 | 10.500 | 11.500 | Range | | Mo | 3,40-3,80 | 3.400 | 3.800 | Range | | W | 8,40-9,10 | 8.400 | 9.100 | 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. ## Physical & mechanical properties Density 8,2 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 1.3, a shared category, and a published range for Co / W 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. [HS10-4-3-10 1.3207 Co 9,50-10,5 · W 9,00-10,0 - ΔCo 1.00 - ΔW 0.75 - 20 designations](/materials/din-en/hs10-4-3-10 "HS10-4-3-10") ## 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=b9b068ad-eb5d-4d3e-807e-92c741830acf&designation=135cbb5b-8758-41eb-870b-264d238111d8 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/hs9-4-3-11.pdf "Datasheet as PDF")