--- title: "6HW2S — Tool steels for cold work" description: "6HW2S in GOST: material number 1.2550, also listed as 60WCrV7. Category: Tool steels for cold work. Designations recorded for this grade: 31." canonical: https://steelequivalents.com/materials/gost/6hw2s language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/gost/6hw2s.md cs: https://steelequivalents.com/cs/materiály/gost/6hw2s.md de: https://steelequivalents.com/de/werkstoffe/gost/6hw2s.md es: https://steelequivalents.com/es/materiales/gost/6hw2s.md fr: https://steelequivalents.com/fr/matériaux/gost/6hw2s.md hu: https://steelequivalents.com/hu/anyagok/gost/6hw2s.md it: https://steelequivalents.com/it/materiali/gost/6hw2s.md nl: https://steelequivalents.com/nl/materialen/gost/6hw2s.md pl: https://steelequivalents.com/pl/materiały/gost/6hw2s.md pt: https://steelequivalents.com/pt/materiais/gost/6hw2s.md ru: https://steelequivalents.com/ru/материалы/gost/6hw2s.md tr: https://steelequivalents.com/tr/malzemeler/gost/6hw2s.md zh: https://steelequivalents.com/zh/材料/gost/6hw2s.md ja: https://steelequivalents.com/ja/材料/gost/6hw2s.md ar: https://steelequivalents.com/ar/المواد/gost/6hw2s.md ko: https://steelequivalents.com/ko/재료/gost/6hw2s.md pt-br: https://steelequivalents.com/pt-br/materiais/gost/6hw2s.md hi: https://steelequivalents.com/hi/सामग्री/gost/6hw2s.md content_hash: sha256:0b93f2f8449482e63f591dfbcad12f5d2b0304877f4210fe2093b14e88175284 generated: 2026-09-22 --- > **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/gost/6hw2s > Canonical URL: https://steelequivalents.com/materials/gost/6hw2s > 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. GOST · Russia / CIS · 31 designations # 6HW2S 6HW2S is a designation in GOST for the material held under material number 1.2550, also listed as 60WCrV7. It is a material in the category Tool steels for cold work. We list 31 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, BS, AFNOR, ISO, GB, GOST, UNI, ČSN, STN, SRPS, HRN, PN, MSZ and ÖNORM. - [*Material no.* **1.2550**](/materials/material-no/1.2550 "Material no.: 1.2550") - [*Category* **Tool steels for cold work · 109 grades**](/categories/tool-steels-for-cold-work "Category: Tool steels for cold work · 109 grades") - *Designations* **31** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=b1f668f1-8449-41a1-805d-634befdd01f8&designation=4a04e123-b037-461f-ad69-c5de9d4f11f8 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/6hw2s.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN 60WCrV8 This grade’s own name](/materials/din-en/60wcrv8 "DIN / EN 60WCrV8") ## 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 31 designations · 16 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 - [60WCrV7 This grade’s own name Withdrawn](/materials/din-en/60wcrv7 "DIN / EN 60WCrV7") - [60WCrV8 This grade’s own name](/materials/din-en/60wcrv8 "DIN / EN 60WCrV8") UNS United States · 1 - [T41901 Indicative](/materials/uns/t41901 "UNS T41901") AISI / SAE United States · 1 - [S1 Indicative](/materials/aisi-sae/s1 "AISI / SAE S1") BS United Kingdom · 1 - [BS1 Indicative](/materials/bs/bs1 "BS BS1") AFNOR France · 2 - [55WC20 Indicative](/materials/afnor/55wc20 "AFNOR 55WC20") - [55WCrV8 Indicative](/materials/afnor/55wcrv8 "AFNOR 55WCrV8") ISO International · 2 - [45WCrV7 Indicative](/materials/din-en/45wcrv7 "ISO 45WCrV7") - [60WCrV8 Indicative](/materials/din-en/60wcrv8 "ISO 60WCrV8") GB China · 2 - [5CrW2Si Indicative](/materials/gb/5crw2si "GB 5CrW2Si") - [6CrW2Si Indicative](/materials/gb/6crw2si "GB 6CrW2Si") GOST Russia / CIS · 9 - [5ChV2S Indicative](/materials/gost/5chv2s "GOST 5ChV2S") - [5ChV2SF Indicative](/materials/gost/5chv2sf "GOST 5ChV2SF") - [5KHV2S Indicative](/materials/gost/5khv2s "GOST 5KHV2S") - [5XB2C Indicative](/materials/gost/5xb2c "GOST 5XB2C") - [5ХВ2С Indicative](/materials/gost/5khv2s "GOST 5ХВ2С") - [6ChV2S Indicative](/materials/gost/6chv2s "GOST 6ChV2S") - **6HW2S Indicative** - [6KhV2S Indicative](/materials/gost/6khv2s "GOST 6KhV2S") - [6XB2C Indicative](/materials/gost/6xb2c "GOST 6XB2C") UNI Italy · 2 - [55WCrV8KU Indicative](/materials/uni/55wcrv8ku "UNI 55WCrV8KU") - [60WCrV8KU Indicative](/materials/uni/60wcrv8ku "UNI 60WCrV8KU") ČSN Czechia · 2 - [19733 Indicative](/materials/csn/19733 "ČSN 19733") - [19735 Indicative](/materials/csn/19735 "ČSN 19735") STN Slovakia · 1 - [19 735 Indicative](/materials/csn/19735 "STN 19 735") SRPS Serbia · 1 - [Č.6444 Indicative](/materials/srps/c-6444 "SRPS Č.6444") HRN Croatia · 1 - [Č6444 Indicative](/materials/srps/c-6444 "HRN Č6444") PN Poland · 2 - [NZ2 Indicative](/materials/pn/nz2 "PN NZ2") - [NZ3 Indicative](/materials/pn/nz3 "PN NZ3") MSZ Hungary · 1 - [W6 Indicative](/materials/msz/w6 "MSZ W6") ÖNORM Austria · 1 - [K455 Indicative](/materials/onorm/k455 "ÖNORM K455") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 8 elements on file · weight % What this alloy is Fe W Cr Si Iron — the balance, never listed by a standard — 95 % W — 2 % Cr — 1.1 % Si — 0.9 % Traces & impurities · 1.1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.55–0.65 | | Si | 0.7–1 | | Mn | 0.15–0.45 | | P | 0.03 | | S | 0.03 | | Cr | 0.9–1.2 | | V | 0.1–0.2 | | W | 1.7–2.2 | Carbon Silicon Manganese Phosphorus Sulfur Chromium 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 | 0,55-0,65 | 0.550 | 0.650 | Range | | Si | 0,70-1,00 | 0.700 | 1.000 | Range | | P | 0,03 | 0.030 | 0.030 | Exact | | S | 0,03 | 0.030 | 0.030 | Exact | | V | 0,10-0,20 | 0.100 | 0.200 | Range | | Cr | 0,90-1,20 | 0.900 | 1.200 | Range | | Mn | 0,15-0,45 | 0.150 | 0.450 | Range | | W | 1,70-2,20 | 1.700 | 2.200 | 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 775 °C Exact Transformation point Ac3 860 °C Exact · Ac3(Acm) Weldability not suitable for welding As published: is not used. Flake sensitivity susceptible As published: predisposed Temper brittleness slightly susceptible As published: weakly predisposed 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 4 conditions · 17 values By delivery state**Soft annealed** source `steelnumber` | Delivery state | HB | |---|---| | Soft annealed | 229 | By heat-treated condition**no delivery state stated** source `splav` | Heat-treated condition | Rm N/mm² | Re N/mm² | A5% | Z% | KCU kJ/m² | |---|---|---|---|---|---| | Steel | 1470 | 1290 | 10 | 30 | 230 | By delivery state**no delivery state stated** source `splav` | Delivery state | HB | |---|---| | (annealing) | 229 – 255 | At temperature**no delivery state stated** source `splav` | Temperature °C | Specific heat capacity J/(kg·K) | Electrical resistivity nΩ·m | |---|---|---| | 20 | — | 300 | | 100 | 462 | — | | 200 | — | 420 | | 300 | 462 | — | | 500 | — | 690 | | 600 | 655 | — | | 800 | — | 1080 | | 900 | 832 | 1150 | | 1000 | 752 | — | 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. ## Heat treatment **GB /T 1299-2025** Single operation Test specimen - Quenching 860–900 °C Cooling Oil Supply condition - Quenching Test specimen - Annealing Supply condition Conditions the standard permits on delivery. No temperature or medium is published for these, so no order and no alternation is implied. Source: [www.caishuku.com](https://www.caishuku.com/detail/azhlNWIxMzUxMTY_ "Source: www.caishuku.com") ## 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 W / 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. [35WCrV7 1.2541 W 1,80-2,10 · Cr 0,90-1,20 - ΔW 0.00 - ΔCr 0.00 - 1 designations](/materials/din-en/35wcrv7 "35WCrV7")[1.2542 1.2542 W 1,80-2,10 · Cr 0,90-1,20 - ΔW 0.00 - ΔCr 0.00 - 25 designations](/materials/material-no/1.2542 "1.2542")[80 WCrV 8 1.2552 W 1,80-2,10 · Cr 1,00-1,20 - ΔW 0.00 - ΔCr 0.05 - 2 designations](/materials/din-en/80-wcrv-8 "80 WCrV 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=b1f668f1-8449-41a1-805d-634befdd01f8&designation=4a04e123-b037-461f-ad69-c5de9d4f11f8 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/6hw2s.pdf "Datasheet as PDF")