--- title: "20Mn6 — Low-temperature structural steels" description: "20Mn6: 3 equivalent designations across 3 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/din-en/20mn6 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/din-en/20mn6.md cs: https://steelequivalents.com/cs/materiály/din-en/20mn6.md de: https://steelequivalents.com/de/werkstoffe/din-en/20mn6.md es: https://steelequivalents.com/es/materiales/din-en/20mn6.md fr: https://steelequivalents.com/fr/matériaux/din-en/20mn6.md hu: https://steelequivalents.com/hu/anyagok/din-en/20mn6.md it: https://steelequivalents.com/it/materiali/din-en/20mn6.md nl: https://steelequivalents.com/nl/materialen/din-en/20mn6.md pl: https://steelequivalents.com/pl/materiały/din-en/20mn6.md pt: https://steelequivalents.com/pt/materiais/din-en/20mn6.md ru: https://steelequivalents.com/ru/материалы/din-en/20mn6.md tr: https://steelequivalents.com/tr/malzemeler/din-en/20mn6.md zh: https://steelequivalents.com/zh/材料/din-en/20mn6.md ja: https://steelequivalents.com/ja/材料/din-en/20mn6.md ar: https://steelequivalents.com/ar/المواد/din-en/20mn6.md ko: https://steelequivalents.com/ko/재료/din-en/20mn6.md pt-br: https://steelequivalents.com/pt-br/materiais/din-en/20mn6.md hi: https://steelequivalents.com/hi/सामग्री/din-en/20mn6.md content_hash: sha256:d4fddc0bd2b259acf7f9aa83a4ebadc626365ed40521ffc30c3909f1a9d77e87 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/din-en/20mn6 > Canonical URL: https://steelequivalents.com/materials/din-en/20mn6 > 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 · 3 designations # 20Mn6 20Mn6 is a material in the category [Low-temperature structural steels](/categories/low-temperature-structural-steels "Low-temperature structural steels"), held under material number 1.1169. Its recorded composition includes C 0.17–0.23%, Si 0.3–0.6%, P 0.035%, S 0.035% and Mn 1.3–1.6%. We list 2 designations recorded for this grade, in the standards UNS and AISI / SAE. Its recorded density is 7.85 g/cm³. - [*Material no.* **1.1169**](/materials/material-no/1.1169 "Material no.: 1.1169") - [*Category* **Low-temperature structural steels · 55 grades**](/categories/low-temperature-structural-steels "Category: Low-temperature structural steels · 55 grades") - *Designations* **3** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=d24b589d-dd3d-4651-9f6b-7264d82bef03&designation=9a81dc62-6c0d-45e5-9f0b-71509ae6c925 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/20mn6.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [UNS G15240 This grade’s own name · 2 grades on that route](/materials/uns/g15240 "UNS G15240") - [AISI / SAE 1524 This grade’s own name · 2 grades on that route](/materials/aisi-sae/1524 "AISI / SAE 1524") ## About Low-temperature structural steels Low-temperature structural steels are structural steels designed to retain toughness and reliable load-bearing performance in cold service. Their resistance to brittle fracture at low temperatures makes them suitable for structures, pressure-containing equipment and other components exposed to severe cold. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 3 designations · 3 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 - **20Mn6 This grade’s own name** UNS United States · 1 - [G15240 This grade’s own name](/materials/uns/g15240 "UNS G15240") AISI / SAE United States · 1 - [1524 This grade’s own name](/materials/aisi-sae/1524 "AISI / SAE 1524") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 5 elements on file · weight % What this alloy is Fe Mn Si C Iron — the balance, never listed by a standard — 97.8 % Mn — 1.5 % Si — 0.4 % C — 0.2 % Traces & impurities · 0.1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.17–0.23 | | Si | 0.3–0.6 | | Mn | 1.3–1.6 | | P | 0.035 | | S | 0.035 | Carbon Silicon Manganese Phosphorus Sulfur 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 | 0,17-0,23 | 0.170 | 0.230 | Range | | Si | 0,30-0,60 | 0.300 | 0.600 | Range | | P | 0,035 | 0.035 | 0.035 | Exact | | S | 0,035 | 0.035 | 0.035 | Exact | | Mn | 1,30-1,60 | 1.300 | 1.600 | 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, Cr, Mo. ## 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 1.1, a shared category, and a published range for Mn / Si 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. [22Mn6 1.1160 Mn 1,30-1,70 · Si 0,15-0,30 - ΔMn 0.05 - ΔSi 0.22 - 14 designations](/materials/din-en/22mn6 "22Mn6") ## 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=d24b589d-dd3d-4651-9f6b-7264d82bef03&designation=9a81dc62-6c0d-45e5-9f0b-71509ae6c925 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/20mn6.pdf "Datasheet as PDF")