--- title: "24CrMo10 — Hydrogen resistant steels" description: "24CrMo10: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/din-en/24crmo10 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/din-en/24crmo10.md cs: https://steelequivalents.com/cs/materiály/din-en/24crmo10.md de: https://steelequivalents.com/de/werkstoffe/din-en/24crmo10.md es: https://steelequivalents.com/es/materiales/din-en/24crmo10.md fr: https://steelequivalents.com/fr/matériaux/din-en/24crmo10.md hu: https://steelequivalents.com/hu/anyagok/din-en/24crmo10.md it: https://steelequivalents.com/it/materiali/din-en/24crmo10.md nl: https://steelequivalents.com/nl/materialen/din-en/24crmo10.md pl: https://steelequivalents.com/pl/materiały/din-en/24crmo10.md pt: https://steelequivalents.com/pt/materiais/din-en/24crmo10.md ru: https://steelequivalents.com/ru/материалы/din-en/24crmo10.md tr: https://steelequivalents.com/tr/malzemeler/din-en/24crmo10.md zh: https://steelequivalents.com/zh/材料/din-en/24crmo10.md ja: https://steelequivalents.com/ja/材料/din-en/24crmo10.md ar: https://steelequivalents.com/ar/المواد/din-en/24crmo10.md ko: https://steelequivalents.com/ko/재료/din-en/24crmo10.md pt-br: https://steelequivalents.com/pt-br/materiais/din-en/24crmo10.md hi: https://steelequivalents.com/hi/सामग्री/din-en/24crmo10.md content_hash: sha256:5e8e31a793ac2d3bfa3c106bcb641dcef608871e4cbd524a60f7dca37eafa699 generated: 2026-09-21 --- > **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/din-en/24crmo10 > Canonical URL: https://steelequivalents.com/materials/din-en/24crmo10 > 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. DIN / EN · Europe · 1 designation # 24CrMo10 24CrMo10 is a material in the category [Hydrogen resistant steels](/categories/hydrogen-resistant-steels "Hydrogen resistant steels"), held under material number 1.7273. Its recorded composition includes C 0.2–0.28%, Si 0.15–0.35%, Cr 2.3–2.6%, Mn 0.5–0.8% and Ni 0.8%. No cross-standard equivalents are recorded for this grade yet. Its recorded density is 7.85 g/cm³. - [*Material no.* **1.7273**](/materials/material-no/1.7273 "Material no.: 1.7273") - [*Category* **Hydrogen resistant steels · 8 grades**](/categories/hydrogen-resistant-steels "Category: Hydrogen resistant steels · 8 grades") - *Designations* **1** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=36b6467f-11e7-4a88-b08f-b4015b8fbda7&designation=b52a5d1c-9aec-4215-b92f-364b1b99f48b "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/24crmo10.pdf "Datasheet as PDF") ## About Hydrogen resistant steels Hydrogen resistant steels are steels designed to withstand hydrogen-related damage, including hydrogen embrittlement and hydrogen attack. They are used for pressure vessels, piping and process equipment exposed to hydrogen-containing environments, where resistance to hydrogen ingress and loss of toughness is important. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Chemical composition 8 elements on file · weight % What this alloy is Fe Cr Ni Mn Iron — the balance, never listed by a standard — 95.3 % Cr — 2.5 % Ni — 0.8 % Mn — 0.7 % Traces & impurities · 0.8 % 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 | 0.5–0.8 | | P | 0.035 | | S | 0.035 | | Cr | 2.3–2.6 | | Mo | 0.2–0.3 | | Ni | 0.8 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Nickel 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 | | Cr | 2,30-2,60 | 2.300 | 2.600 | Range | | Mn | 0,50-0,80 | 0.500 | 0.800 | Range | | Ni | 0,8 | 0.800 | 0.800 | Exact | | Mo | 0,20-0,30 | 0.200 | 0.300 | 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 790 °C Predicted Ae1 769 °C Predicted Acm 560 °C Predicted Bs 480 °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. ## 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=36b6467f-11e7-4a88-b08f-b4015b8fbda7&designation=b52a5d1c-9aec-4215-b92f-364b1b99f48b "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/24crmo10.pdf "Datasheet as PDF")