--- title: "20MnCrNiMo6-3 — High-strength steels" description: "20MnCrNiMo6-3: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/din-en/20mncrnimo6-3 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/din-en/20mncrnimo6-3.md cs: https://steelequivalents.com/cs/materiály/din-en/20mncrnimo6-3.md de: https://steelequivalents.com/de/werkstoffe/din-en/20mncrnimo6-3.md es: https://steelequivalents.com/es/materiales/din-en/20mncrnimo6-3.md fr: https://steelequivalents.com/fr/matériaux/din-en/20mncrnimo6-3.md hu: https://steelequivalents.com/hu/anyagok/din-en/20mncrnimo6-3.md it: https://steelequivalents.com/it/materiali/din-en/20mncrnimo6-3.md nl: https://steelequivalents.com/nl/materialen/din-en/20mncrnimo6-3.md pl: https://steelequivalents.com/pl/materiały/din-en/20mncrnimo6-3.md pt: https://steelequivalents.com/pt/materiais/din-en/20mncrnimo6-3.md ru: https://steelequivalents.com/ru/материалы/din-en/20mncrnimo6-3.md tr: https://steelequivalents.com/tr/malzemeler/din-en/20mncrnimo6-3.md zh: https://steelequivalents.com/zh/材料/din-en/20mncrnimo6-3.md ja: https://steelequivalents.com/ja/材料/din-en/20mncrnimo6-3.md ar: https://steelequivalents.com/ar/المواد/din-en/20mncrnimo6-3.md ko: https://steelequivalents.com/ko/재료/din-en/20mncrnimo6-3.md pt-br: https://steelequivalents.com/pt-br/materiais/din-en/20mncrnimo6-3.md hi: https://steelequivalents.com/hi/सामग्री/din-en/20mncrnimo6-3.md content_hash: sha256:aee99ba6cf64a65b4204d6ffbe60df34878f3464a60a0cc41061c60cbc5af1e8 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/20mncrnimo6-3 > Canonical URL: https://steelequivalents.com/materials/din-en/20mncrnimo6-3 > 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 # 20MnCrNiMo6-3 20MnCrNiMo6-3 is a material in the category [High-strength steels](/categories/high-strength-steels "High-strength steels"), held under material number 1.8708. Its recorded composition includes C 0.16–0.22%, Si 0.15–0.35%, Cr 0.6–0.75%, Mn 1.3–1.55% and Ni 0.3–0.4%. No cross-standard equivalents are recorded for this grade yet. Its recorded density is 7.85 g/cm³. - [*Material no.* **1.8708**](/materials/material-no/1.8708 "Material no.: 1.8708") - [*Category* **High-strength steels · 128 grades**](/categories/high-strength-steels "Category: High-strength steels · 128 grades") - *Designations* **1** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=a7f39633-1568-41f8-84dc-0e2b7840ada2&designation=a94bb39b-be94-4892-b924-13d59c0241e7 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/20mncrnimo6-3.pdf "Datasheet as PDF") ## About High-strength steels High-strength steels are steels designed to carry high loads while resisting deformation. They are used for load-bearing structures, vehicles and machinery where strength, durability and reduced material weight are important. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Chemical composition 9 elements on file · weight % What this alloy is Fe Mn Cr Ni Iron — the balance, never listed by a standard — 96.8 % Mn — 1.4 % Cr — 0.7 % Ni — 0.4 % Traces & impurities · 0.8 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.16–0.22 | | Si | 0.15–0.35 | | Mn | 1.3–1.55 | | P | 0.035 | | S | 0.035 | | Cr | 0.6–0.75 | | Mo | 0.22–0.3 | | Ni | 0.3–0.4 | | Al | ≥ 0.02 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Nickel Aluminium 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 | 0,16-0,22 | 0.160 | 0.220 | Range | | Al | ≥0,020 | 0.020 | — | Min | | 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 | 0,60-0,75 | 0.600 | 0.750 | Range | | Mn | 1,30-1,55 | 1.300 | 1.550 | Range | | Ni | 0,30-0,40 | 0.300 | 0.400 | Range | | Mo | 0,22-0,30 | 0.220 | 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 801 °C Predicted Ae1 721 °C Predicted Acm 471 °C Predicted Bs 526 °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 1.8, 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. [S890G1QL 1.8796 Mn 1,20-1,50 · Cr 0,50-0,90 - ΔMn 0.07 - ΔCr 0.02 - 1 designations](/materials/din-en/s890g1ql "S890G1QL")[S960G1QL 1.8797 Mn 1,20-1,80 · Cr 0,40-1,00 - ΔMn 0.07 - ΔCr 0.02 - 1 designations](/materials/din-en/s960g1ql "S960G1QL")[S790QL 1.8795 Mn 1,20-1,70 · Cr ≤0,80 - ΔMn 0.02 - ΔCr 0.28 - 1 designations](/materials/din-en/s790ql "S790QL")[16MnCr5-3 1.8712 Mn 0,60-1,70 · Cr 0,50-1,00 - ΔMn 0.28 - ΔCr 0.07 - 1 designations](/materials/din-en/16mncr5-3 "16MnCr5-3")[18MnCr5-3 1.8720 Mn 0,60-1,70 · Cr 0,50-1,00 - ΔMn 0.28 - ΔCr 0.07 - 1 designations](/materials/din-en/18mncr5-3 "18MnCr5-3")[16MnCrMo4-3 1.8717 Mn 0,95-1,30 · Cr 0,40-0,65 - ΔMn 0.30 - ΔCr 0.15 - 1 designations](/materials/din-en/16mncrmo4-3 "16MnCrMo4-3") ## 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=a7f39633-1568-41f8-84dc-0e2b7840ada2&designation=a94bb39b-be94-4892-b924-13d59c0241e7 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/20mncrnimo6-3.pdf "Datasheet as PDF")