--- title: "1.3246 — High-speed steels" description: "1.3246 is the material number of the grade also listed as HS7-4-2-5. Category: High-speed steels. Designations recorded for this grade: 8." canonical: https://steelequivalents.com/materials/material-no/1.3246 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/material-no/1.3246.md cs: https://steelequivalents.com/cs/materiály/číslo-materiálu/1.3246.md de: https://steelequivalents.com/de/werkstoffe/werkstoff-nr/1.3246.md es: https://steelequivalents.com/es/materiales/número-de-material/1.3246.md fr: https://steelequivalents.com/fr/matériaux/numéro-de-matériau/1.3246.md hu: https://steelequivalents.com/hu/anyagok/anyagszám/1.3246.md it: https://steelequivalents.com/it/materiali/numero-materiale/1.3246.md nl: https://steelequivalents.com/nl/materialen/materiaalnummer/1.3246.md pl: https://steelequivalents.com/pl/materiały/numer-materiału/1.3246.md pt: https://steelequivalents.com/pt/materiais/número-do-material/1.3246.md ru: https://steelequivalents.com/ru/материалы/номер-материала/1.3246.md tr: https://steelequivalents.com/tr/malzemeler/malzeme-numarası/1.3246.md zh: https://steelequivalents.com/zh/材料/材料编号/1.3246.md ja: https://steelequivalents.com/ja/材料/材料番号/1.3246.md ar: https://steelequivalents.com/ar/المواد/رقم-المادة/1.3246.md ko: https://steelequivalents.com/ko/재료/재료번호/1.3246.md pt-br: https://steelequivalents.com/pt-br/materiais/número-do-material/1.3246.md hi: https://steelequivalents.com/hi/सामग्री/सामग्री-संख्या/1.3246.md content_hash: sha256:36d135337173ead6cecdef70118ad74e8bf21525d3289fef6514885412a8c3aa 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/material-no/1.3246 > Canonical URL: https://steelequivalents.com/materials/material-no/1.3246 > 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. Material number · Europe · 8 designations # 1.3246 1.3246 is the material number of the grade also listed as HS7-4-2-5. It is a material in the category High-speed steels. We list 8 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, AFNOR, UNE and ČSN. - ***Material no.* **1.3246**** - [*Category* **High-speed steels · 59 grades**](/categories/high-speed-steels "Category: High-speed steels · 59 grades") - *Designations* **8** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=927763d4-aac6-4c87-a846-85acefbd44b3 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/material-no/1.3246.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN HS7-4-2-5 This grade’s own name](/materials/din-en/hs7-4-2-5 "DIN / EN HS7-4-2-5") - [UNS T11341 This grade’s own name · 2 grades on that route](/materials/uns/t11341 "UNS T11341") - [AISI / SAE M41 This grade’s own name · 2 grades on that route](/materials/aisi-sae/m41 "AISI / SAE M41") ## 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 8 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 - [HS7-4-2-5 This grade’s own name](/materials/din-en/hs7-4-2-5 "DIN / EN HS7-4-2-5") - [S 7-4-2-5 This grade’s own name Withdrawn](/materials/din-en/s-7-4-2-5 "DIN / EN S 7-4-2-5") UNS United States · 1 - [T11341 This grade’s own name](/materials/uns/t11341 "UNS T11341") AISI / SAE United States · 1 - [M41 This grade’s own name](/materials/aisi-sae/m41 "AISI / SAE M41") AFNOR France · 1 - [Z110WKCDV07-05-04-04-02 Indicative](/materials/afnor/z110wkcdv07-05-04-04-02 "AFNOR Z110WKCDV07-05-04-04-02") UNE Spain · 2 - [6-5-2-5 Indicative](/materials/afnor/6-5-2-5 "UNE 6-5-2-5") - [F.5613 Indicative](/materials/une/f-5613 "UNE F.5613") ČSN Czechia · 1 - [19851 Indicative](/materials/csn/19851 "ČSN 19851") 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 W Co Cr Iron — the balance, never listed by a standard — 76.4 % W — 6.9 % Co — 5 % Cr — 4.2 % Traces & impurities · 7.6 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 1.05–1.15 | | Si | ≤ 0.45 | | Mn | ≤ 0.4 | | P | 0.03 | | S | 0.03 | | Cr | 3.8–4.5 | | Mo | 3.6–4 | | V | 1.7–1.9 | | W | 6.6–7.1 | | Co | 4.8–5.2 | 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 | 1,05-1,15 | 1.050 | 1.150 | Range | | Si | ≤0,45 | — | 0.450 | Max | | P | 0,03 | 0.030 | 0.030 | Exact | | S | 0,03 | 0.030 | 0.030 | Exact | | V | 1,70-1,90 | 1.700 | 1.900 | Range | | Cr | 3,80-4,50 | 3.800 | 4.500 | Range | | Mn | ≤0,40 | — | 0.400 | Max | | Co | 4,80-5,20 | 4.800 | 5.200 | Range | | Mo | 3,60-4,00 | 3.600 | 4.000 | Range | | W | 6,60-7,10 | 6.600 | 7.100 | 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 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 W / 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. [HS6-5-2-5S 1.3245 W 6,00-6,70 · Co 4,50-5,00 - ΔW 0.50 - ΔCo 0.25 - 2 designations](/materials/din-en/hs6-5-2-5s "HS6-5-2-5S")[1.3243 1.3243 W 5,90-6,70 · Co 4,50-5,00 - ΔW 0.55 - ΔCo 0.25 - 49 designations](/materials/material-no/1.3243 "1.3243") ## 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=927763d4-aac6-4c87-a846-85acefbd44b3 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/material-no/1.3246.pdf "Datasheet as PDF")