--- title: "16CrMo4 — Heat-resistant structural steels" description: "16CrMo4: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/din-en/16crmo4 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/din-en/16crmo4.md cs: https://steelequivalents.com/cs/materiály/din-en/16crmo4.md de: https://steelequivalents.com/de/werkstoffe/din-en/16crmo4.md es: https://steelequivalents.com/es/materiales/din-en/16crmo4.md fr: https://steelequivalents.com/fr/matériaux/din-en/16crmo4.md hu: https://steelequivalents.com/hu/anyagok/din-en/16crmo4.md it: https://steelequivalents.com/it/materiali/din-en/16crmo4.md nl: https://steelequivalents.com/nl/materialen/din-en/16crmo4.md pl: https://steelequivalents.com/pl/materiały/din-en/16crmo4.md pt: https://steelequivalents.com/pt/materiais/din-en/16crmo4.md ru: https://steelequivalents.com/ru/материалы/din-en/16crmo4.md tr: https://steelequivalents.com/tr/malzemeler/din-en/16crmo4.md zh: https://steelequivalents.com/zh/材料/din-en/16crmo4.md ja: https://steelequivalents.com/ja/材料/din-en/16crmo4.md ar: https://steelequivalents.com/ar/المواد/din-en/16crmo4.md ko: https://steelequivalents.com/ko/재료/din-en/16crmo4.md pt-br: https://steelequivalents.com/pt-br/materiais/din-en/16crmo4.md hi: https://steelequivalents.com/hi/सामग्री/din-en/16crmo4.md content_hash: sha256:156c6411c4b617d31f5e1af7209a0ee1a24f4b2cf895dfc82dcee938f5622d70 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/din-en/16crmo4 > Canonical URL: https://steelequivalents.com/materials/din-en/16crmo4 > 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 # 16CrMo4 16CrMo4 is a material in the category [Heat-resistant structural steels](/categories/heat-resistant-structural-steels "Heat-resistant structural steels"), held under material number 1.7242. Its recorded composition includes C 0.13–0.2%, Si 0.15–0.35%, Cr 0.9–1.2%, Mn 0.5–0.8% and Ni 0.4%. No cross-standard equivalents are recorded for this grade yet. Its recorded density is 7.85 g/cm³. - [*Material no.* **1.7242**](/materials/material-no/1.7242 "Material no.: 1.7242") - [*Category* **Heat-resistant structural steels · 62 grades**](/categories/heat-resistant-structural-steels "Category: Heat-resistant structural steels · 62 grades") - *Designations* **1** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=b17a755b-73c2-458b-a65e-9ad19e4b46b3&designation=6ef70af3-44ee-4179-822d-45a1a33c940f "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/16crmo4.pdf "Datasheet as PDF") ## 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. ## Chemical composition 8 elements on file · weight % What this alloy is Fe Cr Mn Ni Iron — the balance, never listed by a standard — 97.2 % Cr — 1.1 % Mn — 0.7 % Ni — 0.4 % Traces & impurities · 0.7 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.13–0.2 | | Si | 0.15–0.35 | | Mn | 0.5–0.8 | | P | 0.035 | | S | 0.035 | | Cr | 0.9–1.2 | | Mo | 0.2–0.3 | | Ni | 0.4 | 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 | 0,13-0,20 | 0.130 | 0.200 | 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 | 0,90-1,20 | 0.900 | 1.200 | Range | | Mn | 0,50-0,80 | 0.500 | 0.800 | Range | | Ni | 0,4 | 0.400 | 0.400 | 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 814 °C Predicted Ae1 742 °C Predicted Acm 465 °C Predicted Bs 538 °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. ## 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 / 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. [24CrMo5 1.7258 Cr 0,90-1,20 · Mn 0,50-0,80 - ΔCr 0.00 - ΔMn 0.00 - 1 designations](/materials/din-en/24crmo5 "24CrMo5")[16CrMo4-4 1.7337 Cr 0,90-1,20 · Mn 0,50-0,80 - ΔCr 0.00 - ΔMn 0.00 - 15 designations](/materials/din-en/16crmo4-4 "16CrMo4-4")[22CrMo4-4 1.7350 Cr 0,90-1,20 · Mn 0,50-0,80 - ΔCr 0.00 - ΔMn 0.00 - 3 designations](/materials/din-en/22crmo4-4 "22CrMo4-4")[40CrMoV4-6 1.7711 Cr 0,90-1,20 · Mn 0,45-0,85 - ΔCr 0.00 - ΔMn 0.00 - 8 designations](/materials/din-en/40crmov4-6 "40CrMoV4-6")[1.7335 1.7335 Cr 0,70-1,15 · Mn 0,40-1,00 - ΔCr 0.13 - ΔMn 0.05 - 101 designations](/materials/material-no/1.7335 "1.7335")[13CrMoSi5-5 1.7336 Cr 1,00-1,50 · Mn 0,40-0,65 - ΔCr 0.20 - ΔMn 0.13 - 12 designations](/materials/din-en/13crmosi5-5 "13CrMoSi5-5") ## 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=b17a755b-73c2-458b-a65e-9ad19e4b46b3&designation=6ef70af3-44ee-4179-822d-45a1a33c940f "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/16crmo4.pdf "Datasheet as PDF")