--- title: "25Cr2Mo1VA — Heat-resistant structural steels" description: "25Cr2Mo1VA in GB: material number 1.7733, also listed as 24CrMoV5-5. It is a material in the category Heat-resistant structural steels." canonical: https://steelequivalents.com/materials/gb/25cr2mo1va language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/gb/25cr2mo1va.md cs: https://steelequivalents.com/cs/materiály/gb/25cr2mo1va.md de: https://steelequivalents.com/de/werkstoffe/gb/25cr2mo1va.md es: https://steelequivalents.com/es/materiales/gb/25cr2mo1va.md fr: https://steelequivalents.com/fr/matériaux/gb/25cr2mo1va.md hu: https://steelequivalents.com/hu/anyagok/gb/25cr2mo1va.md it: https://steelequivalents.com/it/materiali/gb/25cr2mo1va.md nl: https://steelequivalents.com/nl/materialen/gb/25cr2mo1va.md pl: https://steelequivalents.com/pl/materiały/gb/25cr2mo1va.md pt: https://steelequivalents.com/pt/materiais/gb/25cr2mo1va.md ru: https://steelequivalents.com/ru/материалы/gb/25cr2mo1va.md tr: https://steelequivalents.com/tr/malzemeler/gb/25cr2mo1va.md zh: https://steelequivalents.com/zh/材料/gb/25cr2mo1va.md ja: https://steelequivalents.com/ja/材料/gb/25cr2mo1va.md ar: https://steelequivalents.com/ar/المواد/gb/25cr2mo1va.md ko: https://steelequivalents.com/ko/재료/gb/25cr2mo1va.md pt-br: https://steelequivalents.com/pt-br/materiais/gb/25cr2mo1va.md hi: https://steelequivalents.com/hi/सामग्री/gb/25cr2mo1va.md content_hash: sha256:e2c6937f3b60039398711f3e6f4d396004c3a373e795f144c224ffad5d796ae9 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/gb/25cr2mo1va > Canonical URL: https://steelequivalents.com/materials/gb/25cr2mo1va > 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. GB · China · 31 designations # 25Cr2Mo1VA 25Cr2Mo1VA is a designation in GB for the material held under material number 1.7733, also listed as 24CrMoV5-5. It is a material in the category Heat-resistant structural steels. We list 31 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, ASTM, BS, AFNOR, JIS, GB, GOST, UNI, ČSN, PN, STN, SRPS, MSZ and ÖNORM. - [*Material no.* **1.7733**](/materials/material-no/1.7733 "Material no.: 1.7733") - [*Category* **Heat-resistant structural steels · 62 grades**](/categories/heat-resistant-structural-steels "Category: Heat-resistant structural steels · 62 grades") - *Designations* **31** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=e6ae7f66-4363-4d09-b86f-9429137dfb8b&designation=388357fe-db4a-4422-93b9-8fb397511bbf "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gb/25cr2mo1va.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN 24CrMoV5-5 This grade’s own name](/materials/din-en/24crmov5-5 "DIN / EN 24CrMoV5-5") - [ASTM A 182 F 11 This grade’s own name](/materials/astm/a182-f11 "ASTM A 182 F 11") ## About Heat-resistant structural steels Heat-resistant structural steels are structural steels designed to retain useful strength and dimensional stability at elevated temperatures. They are used for load-bearing components in hot-service equipment where mechanical performance must be maintained during heating. 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 · 1 - [24CrMoV5-5 This grade’s own name](/materials/din-en/24crmov5-5 "DIN / EN 24CrMoV5-5") UNS United States · 1 - [K11572 Indicative](/materials/uns/k11572 "UNS K11572") AISI / SAE United States · 1 - [Gr.WC6 Indicative](/materials/aisi-sae/gr-wc6 "AISI / SAE Gr.WC6") ASTM United States · 1 - [A 182 F 11 This grade’s own name](/materials/astm/a182-f11 "ASTM A 182 F 11") BS United Kingdom · 2 - [621 Indicative](/materials/bs/621 "BS 621") - [671-850 Indicative](/materials/bs/671-850 "BS 671-850") AFNOR France · 2 - [15CD5-05M Indicative](/materials/afnor/15cd5-05m "AFNOR 15CD5-05M") - [28CDV5 Indicative](/materials/afnor/28cdv5 "AFNOR 28CDV5") JIS Japan · 1 - [SCPH21 Indicative](/materials/jis/scph21 "JIS SCPH21") GB China · 3 - **25Cr2Mo1VA Indicative** - [25Cr2MoVA Indicative](/materials/gb/25cr2mova "GB 25Cr2MoVA") - [25CrMoVA Indicative](/materials/gb/25crmova "GB 25CrMoVA") GOST Russia / CIS · 4 - [20KHMFL Indicative](/materials/gost/20khmfl "GOST 20KHMFL") - [20ХМФЛ Indicative](/materials/gost/20khmfl "GOST 20ХМФЛ") - [25X1МФ Indicative](/materials/gost/25x1mf "GOST 25X1МФ") - [ст.25X1МФ Indicative](/materials/gost/st-25x1mf "GOST ст.25X1МФ") UNI Italy · 2 - [24CrMoV5-5 Indicative](/materials/din-en/24crmov5-5 "UNI 24CrMoV5-5") - [G15CrMo55 Indicative](/materials/uni/g15crmo55 "UNI G15CrMo55") ČSN Czechia · 4 - [15236 Indicative](/materials/csn/15236 "ČSN 15236") - [15320 Indicative](/materials/csn/15320 "ČSN 15320") - [415320 Indicative](/materials/csn/415320 "ČSN 415320") - [422744 Indicative](/materials/csn/422744 "ČSN 422744") PN Poland · 4 - [23H2MF Indicative](/materials/pn/23h2mf "PN 23H2MF") - [24H2MF Indicative](/materials/pn/24h2mf "PN 24H2MF") - [26H2MF Indicative](/materials/pn/26h2mf "PN 26H2MF") - [L18HM Indicative](/materials/pn/l18hm "PN L18HM") STN Slovakia · 1 - [415320 Indicative](/materials/csn/415320 "STN 415320") SRPS Serbia · 1 - [Č.7432 Indicative](/materials/srps/c-7432 "SRPS Č.7432") MSZ Hungary · 1 - [MCrMoV Indicative](/materials/msz/mcrmov "MSZ MCrMoV") ÖNORM Austria · 2 - [24CrMoV5-5 Indicative](/materials/din-en/24crmov5-5 "ÖNORM 24CrMoV5-5") - [GS17CrMo55 Indicative](/materials/din-en/gs17crmo55 "ÖNORM GS17CrMo55") 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 Cr Ni Mo Iron — the balance, never listed by a standard — 96.3 % Cr — 1.4 % Ni — 0.6 % Mo — 0.6 % Traces & impurities · 1.2 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.2–0.28 | | Si | 0.15–0.35 | | Mn | 0.3–0.6 | | P | 0.035 | | S | 0.035 | | Cr | 1.2–1.5 | | Mo | 0.5–0.6 | | Ni | 0.6 | | V | 0.15–0.25 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Nickel 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 | 0,20-0,28 | 0.200 | 0.280 | Range | | Si | 0,15-0,35 | 0.150 | 0.350 | Range | | P | 0,035 | 0.035 | 0.035 | Exact | | S | 0,035 | 0.035 | 0.035 | Exact | | V | 0,15-0,25 | 0.150 | 0.250 | Range | | Cr | 1,20-1,50 | 1.200 | 1.500 | Range | | Mn | 0,30-0,60 | 0.300 | 0.600 | Range | | Ni | 0,6 | 0.600 | 0.600 | Exact | | Mo | 0,50-0,60 | 0.500 | 0.600 | 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 computed from composition · °C Predicted Ae3 798 °C Predicted Ae1 749 °C Predicted Acm 535 °C Predicted Bs 515 °C These four temperatures are a CALCULATION from this grade's own composition, using the published Li, Niebuhr, Meekisho & Atteridge (1998) model — never a measurement, and computed from the UPPER BOUND of each element's specified range, not a mid-range figure. Where this grade also has a measured transformation point (Ac1, Ac3, Ar1, Ar3) on file, it is shown separately, in Physical & mechanical properties, and is never replaced by the predicted figures here — Ae (predicted, equilibrium) and Ac/Ar (measured, on heating or cooling) are different physical quantities and can differ by tens of degrees; a mismatch between the two is not an error in either. ## 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. ## Properties by condition 1 conditions · 5 values By delivery state**no delivery state stated** source `splav` | Delivery state | Rm N/mm² | Re N/mm² | A5% | Z% | KCU kJ/m² | |---|---|---|---|---|---| | Casting, GOST 977-88 | 491 | 275 | 16 | 35 | 294 | 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 and Tempering d=25 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/azhlNWIxMTI4 "Source: www.caishuku.com") ## Similar grades — and why Selection rule, stated so you can disagree with it: same number class 1.7, a shared category, and a published range for Cr / Ni 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. [21CrMoV5-7 1.7709 Cr 1,20-1,50 · Ni 0,6 - ΔCr 0.00 - ΔNi 0.00 - 14 designations](/materials/din-en/21crmov5-7 "21CrMoV5-7")[24CrMo5 1.7258 Cr 0,90-1,20 · Ni 0,6 - ΔCr 0.30 - ΔNi 0.00 - 1 designations](/materials/din-en/24crmo5 "24CrMo5")[22CrMo4-4 1.7350 Cr 0,90-1,20 · Ni 0,6 - ΔCr 0.30 - ΔNi 0.00 - 3 designations](/materials/din-en/22crmo4-4 "22CrMo4-4") ## 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=e6ae7f66-4363-4d09-b86f-9429137dfb8b&designation=388357fe-db4a-4422-93b9-8fb397511bbf "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gb/25cr2mo1va.pdf "Datasheet as PDF")