--- title: "K6 — Tool steels for cold work" description: "K6 in MSZ: material number 1.2008, also listed as 140Cr2. It is a material in the category Tool steels for cold work. Designations recorded for this grade: 14." canonical: https://steelequivalents.com/materials/msz/k6 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/msz/k6.md cs: https://steelequivalents.com/cs/materiály/msz/k6.md de: https://steelequivalents.com/de/werkstoffe/msz/k6.md es: https://steelequivalents.com/es/materiales/msz/k6.md fr: https://steelequivalents.com/fr/matériaux/msz/k6.md hu: https://steelequivalents.com/hu/anyagok/msz/k6.md it: https://steelequivalents.com/it/materiali/msz/k6.md nl: https://steelequivalents.com/nl/materialen/msz/k6.md pl: https://steelequivalents.com/pl/materiały/msz/k6.md pt: https://steelequivalents.com/pt/materiais/msz/k6.md ru: https://steelequivalents.com/ru/материалы/msz/k6.md tr: https://steelequivalents.com/tr/malzemeler/msz/k6.md zh: https://steelequivalents.com/zh/材料/msz/k6.md ja: https://steelequivalents.com/ja/材料/msz/k6.md ar: https://steelequivalents.com/ar/المواد/msz/k6.md ko: https://steelequivalents.com/ko/재료/msz/k6.md pt-br: https://steelequivalents.com/pt-br/materiais/msz/k6.md hi: https://steelequivalents.com/hi/सामग्री/msz/k6.md content_hash: sha256:293763c8d0eed34c4ebb127656ab77937ac46e9529c5e4ee53c18f22db9a1c27 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/msz/k6 > Canonical URL: https://steelequivalents.com/materials/msz/k6 > 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. MSZ · Hungary · 14 designations # K6 K6 is a designation in MSZ for the material held under material number 1.2008, also listed as 140Cr2. It is a material in the category Tool steels for cold work. We list 14 designations recorded for this grade, in the standards DIN / EN, AFNOR, JIS, GB, GOST, ČSN, SRPS, PN, MSZ and ÖNORM. - [*Material no.* **1.2008**](/materials/material-no/1.2008 "Material no.: 1.2008") - [*Category* **Tool steels for cold work · 109 grades**](/categories/tool-steels-for-cold-work "Category: Tool steels for cold work · 109 grades") - *Designations* **14** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=7224b6bf-d0c0-4eaf-b536-421c109d509a&designation=f1836c99-43d2-4aa7-890c-5b74ecd8f8be "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/msz/k6.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN 140Cr2 This grade’s own name](/materials/din-en/140cr2 "DIN / EN 140Cr2") ## About Tool steels for cold work Cold-work tool steels are high-strength tool materials designed for shaping, cutting and forming operations carried out without significant heating of the workpiece. They are characterised by high hardness, wear resistance and the ability to retain a sharp or precise working edge, making them suitable for dies, punches, cutting tools and other tooling exposed to repeated mechanical contact. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 14 designations · 10 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 · 3 - [140Cr2 This grade’s own name](/materials/din-en/140cr2 "DIN / EN 140Cr2") - [140Cr3 This grade’s own name Withdrawn](/materials/din-en/140cr3 "DIN / EN 140Cr3") - [140CrV1 Indicative](/materials/din-en/140crv1 "DIN / EN 140CrV1") AFNOR France · 2 - [130Cr3 Indicative](/materials/afnor/130cr3 "AFNOR 130Cr3") - [Y2-140C Indicative](/materials/afnor/y2-140c "AFNOR Y2-140C") JIS Japan · 1 - [SKS8 Indicative](/materials/jis/sks8 "JIS SKS8") GB China · 1 - [Cr06 Indicative](/materials/gb/cr06 "GB Cr06") GOST Russia / CIS · 2 - [13KH Indicative](/materials/gost/13kh "GOST 13KH") - [13Х Indicative](/materials/gost/13kh "GOST 13Х") ČSN Czechia · 1 - [19 420 Indicative](/materials/csn/19-420 "ČSN 19 420") SRPS Serbia · 1 - [Č.4143 Indicative](/materials/srps/c-4143 "SRPS Č.4143") PN Poland · 1 - [NC5 Indicative](/materials/pn/nc5 "PN NC5") MSZ Hungary · 1 - **K6 Indicative** ÖNORM Austria · 1 - [K205 Indicative](/materials/onorm/k205 "ÖNORM K205") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 6 elements on file · weight % What this alloy is Fe C Cr Mn Iron — the balance, never listed by a standard — 97.4 % C — 1.4 % Cr — 0.6 % Mn — 0.3 % Traces & impurities · 0.3 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 1.35–1.5 | | Si | 0.15–0.3 | | Mn | 0.25–0.4 | | P | 0.035 | | S | 0.035 | | Cr | 0.4–0.7 | Carbon Silicon Manganese Phosphorus Sulfur Chromium 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 | 1,35-1,50 | 1.350 | 1.500 | Range | | Si | 0,15-0,30 | 0.150 | 0.300 | Range | | P | 0,035 | 0.035 | 0.035 | Exact | | S | 0,035 | 0.035 | 0.035 | Exact | | Cr | 0,40-0,70 | 0.400 | 0.700 | Range | | Mn | 0,25-0,40 | 0.250 | 0.400 | 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, Mo. ## Physical & mechanical properties Density 7,85 g/cm³ Exact Transformation point Ac1 760 °C Exact Transformation point Ac3 860 °C Exact · Ac3(Acm) Transformation point Ar1 700 °C 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. ## Properties by condition 2 conditions · 2 values By dimension**no delivery state stated** source `splav` | Dimension mm | Rm N/mm² | |---|---| | 0.1 - 4 | 930 | By delivery state**no delivery state stated** source `splav` | Delivery state | HB | |---|---| | (annealing) , GOST 5950-2000 | 248 | Every figure holds only for the condition on its own row. Values are never merged across conditions or across sources, never averaged, and never interpolated between two rows. An em dash means no value on file — never zero. Figures are converted to the unit in the column header; the source’s own wording is kept and shown where the two differ. ## Similar grades — and why Selection rule, stated so you can disagree with it: same number class 1.2, a shared category, and a published range for Cr / Mn 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. [125Cr2 1.2002 Cr 0,40-0,60 · Mn 0,25-0,40 - ΔCr 0.05 - ΔMn 0.00 - 10 designations](/materials/din-en/125cr2 "125Cr2")[80 CrV 2 3 1.2236 Cr 0,40-0,70 · Mn 0,30-0,50 - ΔCr 0.00 - ΔMn 0.08 - 1 designations](/materials/din-en/80-crv-2-3 "80 CrV 2 3")[115CrV3 1.2210 Cr 0,50-0,80 · Mn 0,20-0,40 - ΔCr 0.10 - ΔMn 0.02 - 18 designations](/materials/din-en/115crv3 "115CrV3")[80CrV2 1.2235 Cr 0,40-0,60 · Mn 0,30-0,50 - ΔCr 0.05 - ΔMn 0.08 - 26 designations](/materials/din-en/80crv2 "80CrV2")[55NiCr10 1.2718 Cr 0,50-0,70 · Mn 0,40-0,50 - ΔCr 0.05 - ΔMn 0.13 - 2 designations](/materials/din-en/55nicr10 "55NiCr10")[31CrV2 1.2208 Cr 0,40-0,70 · Mn 0,40-0,60 - ΔCr 0.00 - ΔMn 0.18 - 7 designations](/materials/din-en/31crv2 "31CrV2") ## 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=7224b6bf-d0c0-4eaf-b536-421c109d509a&designation=f1836c99-43d2-4aa7-890c-5b74ecd8f8be "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/msz/k6.pdf "Datasheet as PDF")