--- title: "X 40 MnCr 18 5 — Non-magnetic steels" description: "X 40 MnCr 18 5: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/din-en/x-40-mncr-18-5 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/din-en/x-40-mncr-18-5.md cs: https://steelequivalents.com/cs/materiály/din-en/x-40-mncr-18-5.md de: https://steelequivalents.com/de/werkstoffe/din-en/x-40-mncr-18-5.md es: https://steelequivalents.com/es/materiales/din-en/x-40-mncr-18-5.md fr: https://steelequivalents.com/fr/matériaux/din-en/x-40-mncr-18-5.md hu: https://steelequivalents.com/hu/anyagok/din-en/x-40-mncr-18-5.md it: https://steelequivalents.com/it/materiali/din-en/x-40-mncr-18-5.md nl: https://steelequivalents.com/nl/materialen/din-en/x-40-mncr-18-5.md pl: https://steelequivalents.com/pl/materiały/din-en/x-40-mncr-18-5.md pt: https://steelequivalents.com/pt/materiais/din-en/x-40-mncr-18-5.md ru: https://steelequivalents.com/ru/материалы/din-en/x-40-mncr-18-5.md tr: https://steelequivalents.com/tr/malzemeler/din-en/x-40-mncr-18-5.md zh: https://steelequivalents.com/zh/材料/din-en/x-40-mncr-18-5.md ja: https://steelequivalents.com/ja/材料/din-en/x-40-mncr-18-5.md ar: https://steelequivalents.com/ar/المواد/din-en/x-40-mncr-18-5.md ko: https://steelequivalents.com/ko/재료/din-en/x-40-mncr-18-5.md pt-br: https://steelequivalents.com/pt-br/materiais/din-en/x-40-mncr-18-5.md hi: https://steelequivalents.com/hi/सामग्री/din-en/x-40-mncr-18-5.md content_hash: sha256:1dd118964ba7595a51397065ccad4dc17e211fc8a1251e95d9abdc4dfa6723c8 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/x-40-mncr-18-5 > Canonical URL: https://steelequivalents.com/materials/din-en/x-40-mncr-18-5 > 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 · 1 designation # X 40 MnCr 18 5 X 40 MnCr 18 5 is a material in the category [Non-magnetic steels](/categories/non-magnetic-steels "Non-magnetic steels"), held under material number 1.3812. Its recorded composition includes C 0.3–0.5%, N 0.1–0.2%, Si ≤ 0.8%, Cr 5–6% and Mn 17–19%. No cross-standard equivalents are recorded for this grade yet. Its recorded density is 7.85 g/cm³. - [*Material no.* **1.3812**](/materials/material-no/1.3812 "Material no.: 1.3812") - [*Category* **Non-magnetic steels · 31 grades**](/categories/non-magnetic-steels "Category: Non-magnetic steels · 31 grades") - *Designations* **1** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=df8d5365-9d3b-4d3c-89a9-47f81cce2a49&designation=554a332f-69b7-4ff8-844a-adee0f559a8d "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/x-40-mncr-18-5.pdf "Datasheet as PDF") ## About Non-magnetic steels Non-magnetic steels are alloy steels designed to have very low magnetic response while retaining useful mechanical strength and ductility. They are used for components and structures where magnetic interference must be minimised, including specialised electrical, laboratory and mechanical equipment. 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 — 75 % Mn — 18 % Cr — 5.5 % Si — 0.8 % Traces & impurities · 0.7 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.3–0.5 | | Si | ≤ 0.8 | | Mn | 17–19 | | P | 0.1 | | S | 0.05 — Unusual | | Cr | 5–6 | | N | 0.1–0.2 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Nitrogen 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 | 0,30-0,50 | 0.300 | 0.500 | Range | | N | 0,10-0,20 | 0.100 | 0.200 | Range | | Si | ≤0,80 | — | 0.800 | Max | | P | 0,1 | 0.100 | 0.100 | Exact | | S | 0,05 | 0.050 | 0.050 | Exact | | Cr | 5,00-6,00 | 5.000 | 6.000 | Range | | Mn | 17,0-19,0 | 17.000 | 19.000 | 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, 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 1.3, 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. [X40MnCrN19 1.3813 Mn 17,0-19,0 · Cr 3,00-5,00 - ΔMn 0.00 - ΔCr 1.50 - 1 designations](/materials/din-en/x40mncrn19 "X40MnCrN19")[X40MnCr18 1.3817 Mn 17,0-19,0 · Cr 3,00-5,00 - ΔMn 0.00 - ΔCr 1.50 - 2 designations](/materials/din-en/x40mncr18 "X40MnCr18")[X55MnCrN18-4 1.3818 Mn 17,5-20,0 · Cr 4,00-5,00 - ΔMn 0.75 - ΔCr 1.00 - 1 designations](/materials/din-en/x55mncrn18-4 "X55MnCrN18-4") ## 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=df8d5365-9d3b-4d3c-89a9-47f81cce2a49&designation=554a332f-69b7-4ff8-844a-adee0f559a8d "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/x-40-mncr-18-5.pdf "Datasheet as PDF")