--- title: "HS2-9-2-8 — High-speed steels" description: "HS2-9-2-8: 9 equivalent designations across 5 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/din-en/hs2-9-2-8 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/din-en/hs2-9-2-8.md cs: https://steelequivalents.com/cs/materiály/din-en/hs2-9-2-8.md de: https://steelequivalents.com/de/werkstoffe/din-en/hs2-9-2-8.md es: https://steelequivalents.com/es/materiales/din-en/hs2-9-2-8.md fr: https://steelequivalents.com/fr/matériaux/din-en/hs2-9-2-8.md hu: https://steelequivalents.com/hu/anyagok/din-en/hs2-9-2-8.md it: https://steelequivalents.com/it/materiali/din-en/hs2-9-2-8.md nl: https://steelequivalents.com/nl/materialen/din-en/hs2-9-2-8.md pl: https://steelequivalents.com/pl/materiały/din-en/hs2-9-2-8.md pt: https://steelequivalents.com/pt/materiais/din-en/hs2-9-2-8.md ru: https://steelequivalents.com/ru/материалы/din-en/hs2-9-2-8.md tr: https://steelequivalents.com/tr/malzemeler/din-en/hs2-9-2-8.md zh: https://steelequivalents.com/zh/材料/din-en/hs2-9-2-8.md ja: https://steelequivalents.com/ja/材料/din-en/hs2-9-2-8.md ar: https://steelequivalents.com/ar/المواد/din-en/hs2-9-2-8.md ko: https://steelequivalents.com/ko/재료/din-en/hs2-9-2-8.md pt-br: https://steelequivalents.com/pt-br/materiais/din-en/hs2-9-2-8.md hi: https://steelequivalents.com/hi/सामग्री/din-en/hs2-9-2-8.md content_hash: sha256:baa9f32106c7b21a69cd73d651e3603912925af6317954e8e383c16bd281bf8c 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/din-en/hs2-9-2-8 > Canonical URL: https://steelequivalents.com/materials/din-en/hs2-9-2-8 > 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 · 9 designations # HS2-9-2-8 [HS2-9-2](/materials/material-no/1.3348 " — composition, equivalents and standards")-8 is a material in the category [High-speed steels](/categories/high-speed-steels "High-speed steels"), held under material number 1.3249. We list 8 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, BS and UNE. Its recorded composition includes [C 0.85](/materials/material-no/1.1625 " — composition, equivalents and standards")–0.92%, V 1.8–2.2%, Cr 3.5–4.2%, Co 7.75–8.75% and Mo 8–9.2%. Its recorded density is 7.85 g/cm³. - [*Material no.* **1.3249**](/materials/material-no/1.3249 "Material no.: 1.3249") - [*Category* **High-speed steels · 59 grades**](/categories/high-speed-steels "Category: High-speed steels · 59 grades") - *Designations* **9** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=b3edd131-2009-47c3-8184-ccd1bc69e7fe&designation=574ed305-4f48-498a-8bdc-8f05bd194070 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/hs2-9-2-8.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [UNS T11333 This grade’s own name](/materials/uns/t11333 "UNS T11333") - [AISI / SAE M33 This grade’s own name](/materials/aisi-sae/m33 "AISI / SAE M33") ## 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. ## Also known as 9 designations · 5 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 · 2 - **HS2-9-2-8 This grade’s own name** - [S 2-9-2-8 This grade’s own name Withdrawn](/materials/din-en/s-2-9-2-8 "DIN / EN S 2-9-2-8") UNS United States · 2 - [T11333 This grade’s own name](/materials/uns/t11333 "UNS T11333") - [T11334 This grade’s own name](/materials/uns/t11334 "UNS T11334") AISI / SAE United States · 2 - [M33 This grade’s own name](/materials/aisi-sae/m33 "AISI / SAE M33") - [M34 This grade’s own name](/materials/aisi-sae/m34 "AISI / SAE M34") BS United Kingdom · 1 - [BM34 Indicative](/materials/bs/bm34 "BS BM34") UNE Spain · 2 - [2-9-2-8 Indicative](/materials/une/2-9-2-8 "UNE 2-9-2-8") - [F.5611 Indicative](/materials/une/f-5611 "UNE F.5611") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 10 elements on file · weight % What this alloy is Fe Mo Co Cr Iron — the balance, never listed by a standard — 73.8 % Mo — 8.6 % Co — 8.3 % Cr — 3.9 % Traces & impurities · 5.5 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.85–0.92 | | Si | ≤ 0.45 | | Mn | ≤ 0.4 | | P | 0.03 | | S | 0.03 | | Cr | 3.5–4.2 | | Mo | 8–9.2 | | V | 1.8–2.2 | | W | 1.5–2 | | Co | 7.75–8.75 | 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 | 0,85-0,92 | 0.850 | 0.920 | Range | | Si | ≤0,45 | — | 0.450 | Max | | P | 0,03 | 0.030 | 0.030 | Exact | | S | 0,03 | 0.030 | 0.030 | Exact | | V | 1,80-2,20 | 1.800 | 2.200 | Range | | Cr | 3,50-4,20 | 3.500 | 4.200 | Range | | Mn | ≤0,40 | — | 0.400 | Max | | Co | 7,75-8,75 | 7.750 | 8.750 | Range | | Mo | 8,00-9,20 | 8.000 | 9.200 | Range | | W | 1,50-2,00 | 1.500 | 2.000 | 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 Mo / Co 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. [HS2-9-1-8 1.3247 Mo 9,00-10,0 · Co 7,50-8,50 - ΔMo 0.90 - ΔCo 0.25 - 28 designations](/materials/din-en/hs2-9-1-8 "HS2-9-1-8") ## 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=b3edd131-2009-47c3-8184-ccd1bc69e7fe&designation=574ed305-4f48-498a-8bdc-8f05bd194070 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/hs2-9-2-8.pdf "Datasheet as PDF")