--- title: "28MnCr4-3 — High-strength steels" description: "28MnCr4-3: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/din-en/28mncr4-3 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/din-en/28mncr4-3.md cs: https://steelequivalents.com/cs/materiály/din-en/28mncr4-3.md de: https://steelequivalents.com/de/werkstoffe/din-en/28mncr4-3.md es: https://steelequivalents.com/es/materiales/din-en/28mncr4-3.md fr: https://steelequivalents.com/fr/matériaux/din-en/28mncr4-3.md hu: https://steelequivalents.com/hu/anyagok/din-en/28mncr4-3.md it: https://steelequivalents.com/it/materiali/din-en/28mncr4-3.md nl: https://steelequivalents.com/nl/materialen/din-en/28mncr4-3.md pl: https://steelequivalents.com/pl/materiały/din-en/28mncr4-3.md pt: https://steelequivalents.com/pt/materiais/din-en/28mncr4-3.md ru: https://steelequivalents.com/ru/материалы/din-en/28mncr4-3.md tr: https://steelequivalents.com/tr/malzemeler/din-en/28mncr4-3.md zh: https://steelequivalents.com/zh/材料/din-en/28mncr4-3.md ja: https://steelequivalents.com/ja/材料/din-en/28mncr4-3.md ar: https://steelequivalents.com/ar/المواد/din-en/28mncr4-3.md ko: https://steelequivalents.com/ko/재료/din-en/28mncr4-3.md pt-br: https://steelequivalents.com/pt-br/materiais/din-en/28mncr4-3.md hi: https://steelequivalents.com/hi/सामग्री/din-en/28mncr4-3.md content_hash: sha256:4f34292dfc63a884ea52695e7d37166f20d065bbacdcd3f1f97d3db1b08e3d27 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/28mncr4-3 > Canonical URL: https://steelequivalents.com/materials/din-en/28mncr4-3 > 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 # 28MnCr4-3 28MnCr4-3 is a material in the category [High-strength steels](/categories/high-strength-steels "High-strength steels"), held under material number 1.8734. Its recorded composition includes C ≤ 0.3%, Si approx. 0.7%, Cr approx. 0.8%, Mn approx. 1% and Mo ≥ 0.1%. No cross-standard equivalents are recorded for this grade yet. Its recorded density is 7.85 g/cm³. - [*Material no.* **1.8734**](/materials/material-no/1.8734 "Material no.: 1.8734") - [*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=9d27cc81-12b7-45e6-8a46-0c3bb4c34b63&designation=def70587-3458-44f1-8e95-571588b30379 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/28mncr4-3.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 7 elements on file · weight % What this alloy is Fe Mn Cr Si Iron — the balance, never listed by a standard — 97.1 % Mn — 1 % Cr — 0.8 % Si — 0.7 % Traces & impurities · 0.4 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.3 | | Si | ≈ 0.7 | | Mn | ≈ 1 | | P | 0.025 | | S | 0.025 | | Cr | ≈ 0.8 | | Mo | ≥ 0.1 | 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 | ≤0,30 | — | 0.300 | Max | | Si | ~0,70 | 0.700 | 0.700 | Indicative | | P | 0,025 | 0.025 | 0.025 | Exact | | S | 0,025 | 0.025 | 0.025 | Exact | | Cr | ~0,80 | 0.800 | 0.800 | Indicative | | Mn | ~1,00 | 1.000 | 1.000 | Indicative | | Mo | ≥0,10 | 0.100 | — | Min | 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, 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 1.8, 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. [21MnCr4-3 1.8711 Mn ~1,00 · Cr ~0,80 - ΔMn 0.00 - ΔCr 0.00 - 1 designations](/materials/din-en/21mncr4-3 "21MnCr4-3")[25MnCr4-3 1.8731 Mn ~1,00 · Cr ~0,80 - ΔMn 0.00 - ΔCr 0.00 - 1 designations](/materials/din-en/25mncr4-3 "25MnCr4-3")[26MnCr4-3 1.8732 Mn ~1,00 · Cr ~0,80 - ΔMn 0.00 - ΔCr 0.00 - 1 designations](/materials/din-en/26mncr4-3 "26MnCr4-3")[27MnCr4-3 1.8733 Mn ~1,00 · Cr ~0,80 - ΔMn 0.00 - ΔCr 0.00 - 1 designations](/materials/din-en/27mncr4-3 "27MnCr4-3")[21MnCr5-4 1.8702 Mn ≤1,70 · Cr 0,50-1,20 - ΔMn 0.15 - ΔCr 0.05 - 1 designations](/materials/din-en/21mncr5-4 "21MnCr5-4")[16MnCr5-3 1.8712 Mn 0,60-1,70 · Cr 0,50-1,00 - ΔMn 0.15 - ΔCr 0.05 - 1 designations](/materials/din-en/16mncr5-3 "16MnCr5-3") ## 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=9d27cc81-12b7-45e6-8a46-0c3bb4c34b63&designation=def70587-3458-44f1-8e95-571588b30379 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/28mncr4-3.pdf "Datasheet as PDF")