--- title: "HS7-7-7-11 — High-speed steels" description: "HS7-7-7-11: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/din-en/hs7-7-7-11 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/din-en/hs7-7-7-11.md cs: https://steelequivalents.com/cs/materiály/din-en/hs7-7-7-11.md de: https://steelequivalents.com/de/werkstoffe/din-en/hs7-7-7-11.md es: https://steelequivalents.com/es/materiales/din-en/hs7-7-7-11.md fr: https://steelequivalents.com/fr/matériaux/din-en/hs7-7-7-11.md hu: https://steelequivalents.com/hu/anyagok/din-en/hs7-7-7-11.md it: https://steelequivalents.com/it/materiali/din-en/hs7-7-7-11.md nl: https://steelequivalents.com/nl/materialen/din-en/hs7-7-7-11.md pl: https://steelequivalents.com/pl/materiały/din-en/hs7-7-7-11.md pt: https://steelequivalents.com/pt/materiais/din-en/hs7-7-7-11.md ru: https://steelequivalents.com/ru/материалы/din-en/hs7-7-7-11.md tr: https://steelequivalents.com/tr/malzemeler/din-en/hs7-7-7-11.md zh: https://steelequivalents.com/zh/材料/din-en/hs7-7-7-11.md ja: https://steelequivalents.com/ja/材料/din-en/hs7-7-7-11.md ar: https://steelequivalents.com/ar/المواد/din-en/hs7-7-7-11.md ko: https://steelequivalents.com/ko/재료/din-en/hs7-7-7-11.md pt-br: https://steelequivalents.com/pt-br/materiais/din-en/hs7-7-7-11.md hi: https://steelequivalents.com/hi/सामग्री/din-en/hs7-7-7-11.md content_hash: sha256:8e66d344382e9d247cd9c7e772177ef4db6332a919e5c4bdcd5d022178b150fb 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/hs7-7-7-11 > Canonical URL: https://steelequivalents.com/materials/din-en/hs7-7-7-11 > 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 # HS7-7-7-11 HS7-7-7-11 is a material in the category [High-speed steels](/categories/high-speed-steels "High-speed steels"), held under material number 1.3242. Its recorded composition includes C 2.2–2.4%, V 6.3–6.7%, Co 10–11%, Mo 6.7–7.3% and W 6.7–7.3%. No cross-standard equivalents are recorded for this grade yet. Its recorded density is 7.85 g/cm³. - [*Material no.* **1.3242**](/materials/material-no/1.3242 "Material no.: 1.3242") - [*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=0f81f4d3-f6c2-40fe-b25e-d371c090aa4d&designation=e84d7d80-5908-4e5d-92b6-98cf59ceeb9c "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/hs7-7-7-11.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 Mo W Iron — the balance, never listed by a standard — 61.5 % Co — 10.5 % Mo — 7 % W — 7 % Traces & impurities · 14 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 2.2–2.4 — Unusual | | Si | ≤ 0.7 | | Mn | ≤ 0.4 | | P | 0.05 — Unusual | | S | 0.03 | | Cr | 3.5–4.5 | | Mo | 6.7–7.3 | | V | 6.3–6.7 — Unusual | | W | 6.7–7.3 | | Co | 10–11 | 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 | 2,20-2,40 | 2.200 | 2.400 | Range | | Si | ≤0,70 | — | 0.700 | Max | | P | 0,05 | 0.050 | 0.050 | Exact | | S | 0,03 | 0.030 | 0.030 | Exact | | V | 6,30-6,70 | 6.300 | 6.700 | Range | | Cr | 3,50-4,50 | 3.500 | 4.500 | Range | | Mn | ≤0,40 | — | 0.400 | Max | | Co | 10,0-11,0 | 10.000 | 11.000 | Range | | Mo | 6,70-7,30 | 6.700 | 7.300 | Range | | W | 6,70-7,30 | 6.700 | 7.300 | 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 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 1.3, a shared category, and a published range for Co / Mo 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. [PMHS7-7-7-11 1.3292 Co 10,0-11,0 · Mo 6,70-7,30 - ΔCo 0.00 - ΔMo 0.00 - 2 designations](/materials/din-en/pmhs7-7-7-11 "PMHS7-7-7-11") ## 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=0f81f4d3-f6c2-40fe-b25e-d371c090aa4d&designation=e84d7d80-5908-4e5d-92b6-98cf59ceeb9c "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/hs7-7-7-11.pdf "Datasheet as PDF")