--- title: "M1 — High-speed steels" description: "M1 in AISI / SAE: material number 1.3346, also listed as HS2-9-1. Category: High-speed steels. Designations recorded for this grade: 9." canonical: https://steelequivalents.com/materials/aisi-sae/m1 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/aisi-sae/m1.md cs: https://steelequivalents.com/cs/materiály/aisi-sae/m1.md de: https://steelequivalents.com/de/werkstoffe/aisi-sae/m1.md es: https://steelequivalents.com/es/materiales/aisi-sae/m1.md fr: https://steelequivalents.com/fr/matériaux/aisi-sae/m1.md hu: https://steelequivalents.com/hu/anyagok/aisi-sae/m1.md it: https://steelequivalents.com/it/materiali/aisi-sae/m1.md nl: https://steelequivalents.com/nl/materialen/aisi-sae/m1.md pl: https://steelequivalents.com/pl/materiały/aisi-sae/m1.md pt: https://steelequivalents.com/pt/materiais/aisi-sae/m1.md ru: https://steelequivalents.com/ru/материалы/aisi-sae/m1.md tr: https://steelequivalents.com/tr/malzemeler/aisi-sae/m1.md zh: https://steelequivalents.com/zh/材料/aisi-sae/m1.md ja: https://steelequivalents.com/ja/材料/aisi-sae/m1.md ar: https://steelequivalents.com/ar/المواد/aisi-sae/m1.md ko: https://steelequivalents.com/ko/재료/aisi-sae/m1.md pt-br: https://steelequivalents.com/pt-br/materiais/aisi-sae/m1.md hi: https://steelequivalents.com/hi/सामग्री/aisi-sae/m1.md content_hash: sha256:76c25bab6bef75d6d69a221bc74614f676d3f50120222619edeaaee730c9c615 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/aisi-sae/m1 > Canonical URL: https://steelequivalents.com/materials/aisi-sae/m1 > 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 · 9 designations # M1 M1 is a designation in AISI / SAE for the material held under material number 1.3346, also listed as HS2-9-1. It is a material in the category High-speed steels. We list 9 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, BS, AFNOR and SRPS. - [*Material no.* **1.3346**](/materials/material-no/1.3346 "Material no.: 1.3346") - [*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=5bc215cc-7028-4439-8340-f215dd1ea44c&designation=45ca9545-704f-466c-ade6-9e736f72d836 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/aisi-sae/m1.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN HS2-9-1 This grade’s own name](/materials/din-en/hs2-9-1 "DIN / EN HS2-9-1") - [UNS T11301 This grade’s own name](/materials/uns/t11301 "UNS T11301") - [AISI / SAE H41 This grade’s own name](/materials/aisi-sae/h41 "AISI / SAE H41") ## 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 · 6 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 - [HS2-9-1 This grade’s own name](/materials/din-en/hs2-9-1 "DIN / EN HS2-9-1") - [S 2-9-1 This grade’s own name Withdrawn](/materials/din-en/s-2-9-1 "DIN / EN S 2-9-1") UNS United States · 2 - [T11301 This grade’s own name](/materials/uns/t11301 "UNS T11301") - [T20841 This grade’s own name](/materials/uns/t20841 "UNS T20841") AISI / SAE United States · 2 - [H41 This grade’s own name](/materials/aisi-sae/h41 "AISI / SAE H41") - **M1 This grade’s own name** BS United Kingdom · 1 - [BM1 Indicative](/materials/bs/bm1 "BS BM1") AFNOR France · 1 - [Z85DCWV08-04-02-01 Indicative](/materials/afnor/z85dcwv08-04-02-01 "AFNOR Z85DCWV08-04-02-01") SRPS Serbia · 1 - [Č.7880 Indicative](/materials/srps/c-7880 "SRPS Č.7880") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 9 elements on file · weight % What this alloy is Fe Mo Cr W Iron — the balance, never listed by a standard — 82.9 % Mo — 8.6 % Cr — 3.9 % W — 1.8 % Traces & impurities · 2.9 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.78–0.86 | | Si | ≤ 0.45 | | Mn | ≤ 0.4 | | P | 0.03 | | S | 0.03 | | Cr | 3.5–4.2 | | Mo | 8–9.2 | | V | 1–1.3 | | W | 1.5–2 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Vanadium Tungsten 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 | 0,78-0,86 | 0.780 | 0.860 | Range | | Si | ≤0,45 | — | 0.450 | Max | | P | 0,03 | 0.030 | 0.030 | Exact | | S | 0,03 | 0.030 | 0.030 | Exact | | V | 1,00-1,30 | 1.000 | 1.300 | Range | | Cr | 3,50-4,20 | 3.500 | 4.200 | Range | | Mn | ≤0,40 | — | 0.400 | Max | | 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 8 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 / Cr 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. [HS2-9-2-8 1.3249 Mo 8,00-9,20 · Cr 3,50-4,20 - ΔMo 0.00 - ΔCr 0.00 - 9 designations](/materials/din-en/hs2-9-2-8 "HS2-9-2-8")[HS1-8-1 1.3327 Mo 8,00-9,00 · Cr 3,50-4,50 - ΔMo 0.10 - ΔCr 0.15 - 1 designations](/materials/din-en/hs1-8-1 "HS1-8-1")[1.3348 1.3348 Mo 8,20-9,20 · Cr 3,50-4,50 - ΔMo 0.10 - ΔCr 0.15 - 13 designations](/materials/material-no/1.3348 "1.3348")[HS4-8-3 1.3336 Mo 8,00-9,00 · Cr 3,80-4,50 - ΔMo 0.10 - ΔCr 0.30 - 1 designations](/materials/din-en/hs4-8-3 "HS4-8-3")[HS2-9-1-8 1.3247 Mo 9,00-10,0 · Cr 3,50-4,50 - ΔMo 0.90 - ΔCr 0.15 - 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=5bc215cc-7028-4439-8340-f215dd1ea44c&designation=45ca9545-704f-466c-ade6-9e736f72d836 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/aisi-sae/m1.pdf "Datasheet as PDF")