--- title: "17CrMo3-5 — Heat-resistant structural steels" description: "17CrMo3-5: 4 equivalent designations across 2 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/din-en/17crmo3-5 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/din-en/17crmo3-5.md cs: https://steelequivalents.com/cs/materiály/din-en/17crmo3-5.md de: https://steelequivalents.com/de/werkstoffe/din-en/17crmo3-5.md es: https://steelequivalents.com/es/materiales/din-en/17crmo3-5.md fr: https://steelequivalents.com/fr/matériaux/din-en/17crmo3-5.md hu: https://steelequivalents.com/hu/anyagok/din-en/17crmo3-5.md it: https://steelequivalents.com/it/materiali/din-en/17crmo3-5.md nl: https://steelequivalents.com/nl/materialen/din-en/17crmo3-5.md pl: https://steelequivalents.com/pl/materiały/din-en/17crmo3-5.md pt: https://steelequivalents.com/pt/materiais/din-en/17crmo3-5.md ru: https://steelequivalents.com/ru/материалы/din-en/17crmo3-5.md tr: https://steelequivalents.com/tr/malzemeler/din-en/17crmo3-5.md zh: https://steelequivalents.com/zh/材料/din-en/17crmo3-5.md ja: https://steelequivalents.com/ja/材料/din-en/17crmo3-5.md ar: https://steelequivalents.com/ar/المواد/din-en/17crmo3-5.md ko: https://steelequivalents.com/ko/재료/din-en/17crmo3-5.md pt-br: https://steelequivalents.com/pt-br/materiais/din-en/17crmo3-5.md hi: https://steelequivalents.com/hi/सामग्री/din-en/17crmo3-5.md content_hash: sha256:3b55e0656b97faca2add2b07b4ab0771435672c817c96e44e06ae8d702f37867 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/17crmo3-5 > Canonical URL: https://steelequivalents.com/materials/din-en/17crmo3-5 > 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 · 4 designations # 17CrMo3-5 17CrMo3-5 is a material in the category [Heat-resistant structural steels](/categories/heat-resistant-structural-steels "Heat-resistant structural steels"), held under material number 1.7332. Its recorded composition includes C ≤ 0.21%, Si 0.15–0.3%, Cr 0.5–0.8%, Mn 0.55–0.8% and Mo 0.45–0.6%. We list 3 designations recorded for this grade, in the standards UNS. Its recorded density is 7.85 g/cm³. - [*Material no.* **1.7332**](/materials/material-no/1.7332 "Material no.: 1.7332") - [*Category* **Heat-resistant structural steels · 62 grades**](/categories/heat-resistant-structural-steels "Category: Heat-resistant structural steels · 62 grades") - *Designations* **4** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=bd448308-0de9-49a5-a9b2-1b539f104bd8&designation=7444232c-4547-48c2-857f-534f87cb712b "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/17crmo3-5.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [UNS K11547 This grade’s own name · 2 grades on that route](/materials/uns/k11547 "UNS K11547") ## 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 4 designations · 2 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 - **17CrMo3-5 This grade’s own name** UNS United States · 3 - [K11547 This grade’s own name](/materials/uns/k11547 "UNS K11547") - [K12122 This grade’s own name](/materials/uns/k12122 "UNS K12122") - [K12143 This grade’s own name](/materials/uns/k12143 "UNS K12143") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 7 elements on file · weight % What this alloy is Fe Mn Cr Mo Iron — the balance, never listed by a standard — 97.6 % Mn — 0.7 % Cr — 0.7 % Mo — 0.5 % Traces & impurities · 0.5 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.21 | | Si | 0.15–0.3 | | Mn | 0.55–0.8 | | P | 0.035 | | S | 0.035 | | Cr | 0.5–0.8 | | Mo | 0.45–0.6 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum 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 | ≤0,21 | — | 0.210 | Max | | Si | 0,15-0,30 | 0.150 | 0.300 | Range | | P | 0,035 | 0.035 | 0.035 | Exact | | S | 0,035 | 0.035 | 0.035 | Exact | | Cr | 0,50-0,80 | 0.500 | 0.800 | Range | | Mn | 0,55-0,80 | 0.550 | 0.800 | Range | | Mo | 0,45-0,60 | 0.450 | 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 Not enough recorded composition to predict a transformation temperature for this grade — missing: Ni. ## 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 Mn / 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. [1.7335 1.7335 Mn 0,40-1,00 · Cr 0,70-1,15 - ΔMn 0.02 - ΔCr 0.27 - 101 designations](/materials/material-no/1.7335 "1.7335")[1.7715 1.7715 Mn 0,40-0,70 · Cr 0,30-0,60 - ΔMn 0.13 - ΔCr 0.20 - 30 designations](/materials/material-no/1.7715 "1.7715") ## 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=bd448308-0de9-49a5-a9b2-1b539f104bd8&designation=7444232c-4547-48c2-857f-534f87cb712b "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/17crmo3-5.pdf "Datasheet as PDF")