--- title: "26MnCr6-3 — High-strength steels" description: "26MnCr6-3: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/din-en/26mncr6-3 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/din-en/26mncr6-3.md cs: https://steelequivalents.com/cs/materiály/din-en/26mncr6-3.md de: https://steelequivalents.com/de/werkstoffe/din-en/26mncr6-3.md es: https://steelequivalents.com/es/materiales/din-en/26mncr6-3.md fr: https://steelequivalents.com/fr/matériaux/din-en/26mncr6-3.md hu: https://steelequivalents.com/hu/anyagok/din-en/26mncr6-3.md it: https://steelequivalents.com/it/materiali/din-en/26mncr6-3.md nl: https://steelequivalents.com/nl/materialen/din-en/26mncr6-3.md pl: https://steelequivalents.com/pl/materiały/din-en/26mncr6-3.md pt: https://steelequivalents.com/pt/materiais/din-en/26mncr6-3.md ru: https://steelequivalents.com/ru/материалы/din-en/26mncr6-3.md tr: https://steelequivalents.com/tr/malzemeler/din-en/26mncr6-3.md zh: https://steelequivalents.com/zh/材料/din-en/26mncr6-3.md ja: https://steelequivalents.com/ja/材料/din-en/26mncr6-3.md ar: https://steelequivalents.com/ar/المواد/din-en/26mncr6-3.md ko: https://steelequivalents.com/ko/재료/din-en/26mncr6-3.md pt-br: https://steelequivalents.com/pt-br/materiais/din-en/26mncr6-3.md hi: https://steelequivalents.com/hi/सामग्री/din-en/26mncr6-3.md content_hash: sha256:dc4820e9c0a59df19f16e6102b8300a0072bd0742dbe41336658025ba5561718 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/26mncr6-3 > Canonical URL: https://steelequivalents.com/materials/din-en/26mncr6-3 > 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 # 26MnCr6-3 26MnCr6-3 is a material in the category [High-strength steels](/categories/high-strength-steels "High-strength steels"), held under material number 1.8721. Its recorded composition includes C ≤ 0.3%, Si ≤ 0.5%, Cr ≤ 1%, Mn ≤ 1.8% and Ni 0.8%. No cross-standard equivalents are recorded for this grade yet. Its recorded density is 7.85 g/cm³. - [*Material no.* **1.8721**](/materials/material-no/1.8721 "Material no.: 1.8721") - [*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=9399d7e8-0165-47d3-91ea-0eb7f939ee9c&designation=75a1a5b9-97d0-4266-bfba-e7862872d445 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/26mncr6-3.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 11 elements on file · weight % What this alloy is Fe Mn Cr Ni Iron — the balance, never listed by a standard — 94.9 % Mn — 1.8 % Cr — 1 % Ni — 0.8 % Traces & impurities · 1.5 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.3 | | Si | ≤ 0.5 | | Mn | ≤ 1.8 | | P | 0.025 | | S | 0.025 | | Cr | ≤ 1 | | Mo | ≤ 0.5 | | Ni | 0.8 | | V | ≤ 0.08 | | Nb | ≤ 0.05 | | B | ≤ 0.005 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Nickel Vanadium Niobium Boron 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 | |---|---|---|---|---| | B | ≤0,005 | — | 0.005 | Max | | C | ≤0,30 | — | 0.300 | Max | | Si | ≤0,50 | — | 0.500 | Max | | P | 0,025 | 0.025 | 0.025 | Exact | | S | 0,025 | 0.025 | 0.025 | Exact | | V | ≤0,08 | — | 0.080 | Max | | Cr | ≤1,00 | — | 1.000 | Max | | Mn | ≤1,80 | — | 1.800 | Max | | Ni | 0,8 | 0.800 | 0.800 | Exact | | Nb | ≤0,05 | — | 0.050 | Max | | Mo | ≤0,50 | — | 0.500 | Max | 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 782 °C Predicted Ae1 721 °C Predicted Acm 544 °C Predicted Bs 490 °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 / Ni 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. [17MnCr5-3 1.8715 Mn ≤1,80 · Ni 0,8 - ΔMn 0.00 - ΔNi 0.00 - 1 designations](/materials/din-en/17mncr5-3 "17MnCr5-3")[15MnCrMo3-2 1.8719 Mn 0,60-1,00 · Ni 0,70-1,00 - ΔMn 0.10 - ΔNi 0.05 - 1 designations](/materials/din-en/15mncrmo3-2 "15MnCrMo3-2")[S690G1QL 1.8920 Mn 0,60-1,00 · Ni 0,70-1,00 - ΔMn 0.10 - ΔNi 0.05 - 2 designations](/materials/din-en/s690g1ql "S690G1QL")[S420NH 1.8750 Mn 1,00-1,70 · Ni 0,8 - ΔMn 0.45 - ΔNi 0.00 - 1 designations](/materials/din-en/s420nh "S420NH")[S420NLH 1.8751 Mn 1,00-1,70 · Ni 0,8 - ΔMn 0.45 - ΔNi 0.00 - 1 designations](/materials/din-en/s420nlh "S420NLH") ## 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=9399d7e8-0165-47d3-91ea-0eb7f939ee9c&designation=75a1a5b9-97d0-4266-bfba-e7862872d445 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/26mncr6-3.pdf "Datasheet as PDF")