--- title: "X100CrMoV51KU — Tool steels for cold work" description: "X100CrMoV51KU in UNI: material number 1.2363, also listed as X100CrMoV5-1. It is a material in the category Tool steels for cold work." canonical: https://steelequivalents.com/materials/uni/x100crmov51ku language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/uni/x100crmov51ku.md cs: https://steelequivalents.com/cs/materiály/uni/x100crmov51ku.md de: https://steelequivalents.com/de/werkstoffe/uni/x100crmov51ku.md es: https://steelequivalents.com/es/materiales/uni/x100crmov51ku.md fr: https://steelequivalents.com/fr/matériaux/uni/x100crmov51ku.md hu: https://steelequivalents.com/hu/anyagok/uni/x100crmov51ku.md it: https://steelequivalents.com/it/materiali/uni/x100crmov51ku.md nl: https://steelequivalents.com/nl/materialen/uni/x100crmov51ku.md pl: https://steelequivalents.com/pl/materiały/uni/x100crmov51ku.md pt: https://steelequivalents.com/pt/materiais/uni/x100crmov51ku.md ru: https://steelequivalents.com/ru/материалы/uni/x100crmov51ku.md tr: https://steelequivalents.com/tr/malzemeler/uni/x100crmov51ku.md zh: https://steelequivalents.com/zh/材料/uni/x100crmov51ku.md ja: https://steelequivalents.com/ja/材料/uni/x100crmov51ku.md ar: https://steelequivalents.com/ar/المواد/uni/x100crmov51ku.md ko: https://steelequivalents.com/ko/재료/uni/x100crmov51ku.md pt-br: https://steelequivalents.com/pt-br/materiais/uni/x100crmov51ku.md hi: https://steelequivalents.com/hi/सामग्री/uni/x100crmov51ku.md content_hash: sha256:c571244a328b2faf3d64969bdc9f5c32d507f8422dc51bbefae7aac3630b0670 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/uni/x100crmov51ku > Canonical URL: https://steelequivalents.com/materials/uni/x100crmov51ku > 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. UNI · Italy · 32 designations # X100CrMoV51KU X100CrMoV51KU is a designation in UNI for the material held under material number 1.2363, also listed as X100CrMoV5-1. It is a material in the category Tool steels for cold work. We list 32 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, BS, AFNOR, UNE, ISO, JIS, GB, GOST, UNI, SS, ČSN, STN, SRPS, PN and ÖNORM. - [*Material no.* **1.2363**](/materials/material-no/1.2363 "Material no.: 1.2363") - [*Category* **Tool steels for cold work · 109 grades**](/categories/tool-steels-for-cold-work "Category: Tool steels for cold work · 109 grades") - *Designations* **32** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=f07686e9-1969-4360-b8f3-1f3afe051524&designation=9dae3a40-85fc-4a9d-9fa9-2cae6e4ec9db "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/uni/x100crmov51ku.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN X100CrMoV5 This grade’s own name](/materials/din-en/x100crmov5 "DIN / EN X100CrMoV5") - [UNS T30102 This grade’s own name](/materials/uns/t30102 "UNS T30102") - [AISI / SAE A2 This grade’s own name](/materials/din-en/a2 "AISI / SAE A2") ## 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 32 designations · 17 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 - [1.2363 Indicative](/materials/material-no/1.2363 "DIN / EN 1.2363") - [X100CrMoV5 This grade’s own name](/materials/din-en/x100crmov5 "DIN / EN X100CrMoV5") - [X100CrMoV5-1 This grade’s own name Withdrawn](/materials/din-en/x100crmov5-1 "DIN / EN X100CrMoV5-1") UNS United States · 1 - [T30102 This grade’s own name](/materials/uns/t30102 "UNS T30102") AISI / SAE United States · 2 - [A2 This grade’s own name](/materials/din-en/a2 "AISI / SAE A2") - [T30102 Indicative](/materials/uns/t30102 "AISI / SAE T30102") BS United Kingdom · 1 - [BA2 Indicative](/materials/bs/ba2 "BS BA2") AFNOR France · 3 - [X100CrMoV5 Indicative](/materials/din-en/x100crmov5 "AFNOR X100CrMoV5") - [Z100CDV5 Indicative](/materials/afnor/z100cdv5 "AFNOR Z100CDV5") - [Z100CVD5 Indicative](/materials/afnor/z100cvd5 "AFNOR Z100CVD5") UNE Spain · 3 - [F.5227X100CrMoV5 Indicative](/materials/une/f-5227x100crmov5 "UNE F.5227X100CrMoV5") - [grupa A2 Indicative](/materials/une/grupa-a2 "UNE grupa A2") - [X100CrMoV5 Indicative](/materials/din-en/x100crmov5 "UNE X100CrMoV5") ISO International · 2 - [X100CrMoV5 Indicative](/materials/din-en/x100crmov5 "ISO X100CrMoV5") - [X100CrMoV5-1 Indicative](/materials/din-en/x100crmov5-1 "ISO X100CrMoV5-1") JIS Japan · 1 - [SKD12 Indicative](/materials/jis/skd12 "JIS SKD12") GB China · 2 - [100CrMoV5 Indicative](/materials/gb/100crmov5 "GB 100CrMoV5") - [Cr5Mo1V Indicative](/materials/gb/cr5mo1v "GB Cr5Mo1V") GOST Russia / CIS · 4 - [9KH5VF Indicative](/materials/gost/9kh5vf "GOST 9KH5VF") - [9Х5ВФ Indicative](/materials/gost/9kh5vf "GOST 9Х5ВФ") - [KH6VF Indicative](/materials/gost/kh6vf "GOST KH6VF") - [Х6ВФ Indicative](/materials/gost/kh6vf "GOST Х6ВФ") UNI Italy · 2 - **X100CrMoV51KU Indicative** - [X100CrMoV5KU Indicative](/materials/uni/x100crmov5ku "UNI X100CrMoV5KU") SS Sweden · 1 - [2260 Indicative](/materials/ss/2260 "SS 2260") ČSN Czechia · 2 - [19571 Indicative](/materials/csn/19571 "ČSN 19571") - [19571 przybliż. Indicative](/materials/csn/19571-przybliz "ČSN 19571 przybliż.") STN Slovakia · 1 - [19 571 Indicative](/materials/csn/19571 "STN 19 571") SRPS Serbia · 1 - [Č.4756 Indicative](/materials/srps/c-4756 "SRPS Č.4756") PN Poland · 1 - [NCLV Indicative](/materials/pn/nclv "PN NCLV") ÖNORM Austria · 2 - [BOHLERK305 Indicative](/materials/onorm/bohlerk305 "ÖNORM BOHLERK305") - [K305 Indicative](/materials/onorm/k305 "ÖNORM K305") 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 Cr Mo C Iron — the balance, never listed by a standard — 91.6 % Cr — 5.2 % Mo — 1.1 % C — 1 % Traces & impurities · 1.2 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.95–1.05 | | Si | 0.1–0.4 | | Mn | 0.4–0.8 | | P | 0.03 | | S | 0.03 | | Cr | 4.8–5.5 | | Mo | 0.9–1.2 | | V | 0.15–0.35 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Vanadium 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 | 0,95-1,05 | 0.950 | 1.050 | Range | | Si | 0,10-0,40 | 0.100 | 0.400 | Range | | P | 0,03 | 0.030 | 0.030 | Exact | | S | 0,03 | 0.030 | 0.030 | Exact | | V | 0,15-0,35 | 0.150 | 0.350 | Range | | Cr | 4,80-5,50 | 4.800 | 5.500 | Range | | Mn | 0,40-0,80 | 0.400 | 0.800 | Range | | Mo | 0,90-1,20 | 0.900 | 1.200 | 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. ## Physical & mechanical properties Density 7,7 g/cm³ Exact Transformation point Ac1 815 °C Exact Transformation point Ac3 845 °C Exact · Ac3(Acm) Transformation point Ar3 775 °C Exact · Ar3(Arcm) Transformation point Ar1 625 °C Exact Weldability not suitable for welding As published: is not used. Temper brittleness not susceptible As published: not 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 · 5 values By delivery state**no delivery state stated** source `steeljis` | Delivery state | HB | HRC | |---|---|---| | Annealed | 241 | — | | Quenched and tempered | — | 60 | By delivery state**Soft annealed** source `steelnumber` | Delivery state | HB | |---|---| | Soft annealed | 241 | By dimension**no delivery state stated** source `splav` | Dimension mm | Rm N/mm² | |---|---| | 0.1 - 4 | 880 | By delivery state**no delivery state stated** source `splav` | Delivery state | HB | |---|---| | (annealing) , GOST 5950-2000 | 241 | 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 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/azhlNWIxMzUyMzQ_ "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 Cr / Mo 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. [X63CrMoV5-1 1.2362 Cr 5,00-5,50 · Mo 1,00-1,30 - ΔCr 0.10 - ΔMo 0.10 - 3 designations](/materials/din-en/x63crmov5-1 "X63CrMoV5-1")[X36CrMoV5-1 1.2340 Cr 4,60-5,40 · Mo 1,10-1,60 - ΔCr 0.15 - ΔMo 0.30 - 1 designations](/materials/din-en/x36crmov5-1 "X36CrMoV5-1") ## 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=f07686e9-1969-4360-b8f3-1f3afe051524&designation=9dae3a40-85fc-4a9d-9fa9-2cae6e4ec9db "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/uni/x100crmov51ku.pdf "Datasheet as PDF")