--- title: "R400HT — Others" description: "R400HT: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/din-en/r400ht language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/din-en/r400ht.md cs: https://steelequivalents.com/cs/materiály/din-en/r400ht.md de: https://steelequivalents.com/de/werkstoffe/din-en/r400ht.md es: https://steelequivalents.com/es/materiales/din-en/r400ht.md fr: https://steelequivalents.com/fr/matériaux/din-en/r400ht.md hu: https://steelequivalents.com/hu/anyagok/din-en/r400ht.md it: https://steelequivalents.com/it/materiali/din-en/r400ht.md nl: https://steelequivalents.com/nl/materialen/din-en/r400ht.md pl: https://steelequivalents.com/pl/materiały/din-en/r400ht.md pt: https://steelequivalents.com/pt/materiais/din-en/r400ht.md ru: https://steelequivalents.com/ru/материалы/din-en/r400ht.md tr: https://steelequivalents.com/tr/malzemeler/din-en/r400ht.md zh: https://steelequivalents.com/zh/材料/din-en/r400ht.md ja: https://steelequivalents.com/ja/材料/din-en/r400ht.md ar: https://steelequivalents.com/ar/المواد/din-en/r400ht.md ko: https://steelequivalents.com/ko/재료/din-en/r400ht.md pt-br: https://steelequivalents.com/pt-br/materiais/din-en/r400ht.md hi: https://steelequivalents.com/hi/सामग्री/din-en/r400ht.md content_hash: sha256:77895c850f3be92967e4fc611dead198736ba676378ee6cbf55eb5df912ec6e7 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/r400ht > Canonical URL: https://steelequivalents.com/materials/din-en/r400ht > 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 # R400HT R400HT is a material in the category Others, held under material number 1.1254. Its recorded composition includes C 0.9–1.05%, Si 0.2–0.6%, Cr ≤ 0.3%, Mn 1–1.3% and Cu ≤ 0.15%. No cross-standard equivalents are recorded for this grade yet. Its recorded density is 7.85 g/cm³. - [*Material no.* **1.1254**](/materials/material-no/1.1254 "Material no.: 1.1254") - [*Category* **Others · 1754 grades**](/categories/others "Category: Others · 1754 grades") - *Designations* **1** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=2068fd3a-4a75-418c-b8b1-3d75d0640eb1&designation=655898ca-0936-4a46-85e7-b0a946cbe363 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/r400ht.pdf "Datasheet as PDF") ## About Others These are miscellaneous metallic alloys that do not fit a more specific material family and may be based on iron, nickel, cobalt, copper or other alloy systems. They are selected for applications requiring particular combinations of strength, hardness, toughness, wear resistance or resistance to demanding service conditions. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Chemical composition 14 elements on file · weight % What this alloy is Fe Mn C Si Iron — the balance, never listed by a standard — 96.8 % Mn — 1.2 % C — 1 % Si — 0.4 % Traces & impurities · 0.7 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.9–1.05 | | Si | 0.2–0.6 | | Mn | 1–1.3 | | P | 0.02 | | S | 0.02 | | Cr | ≤ 0.3 | | Mo | ≤ 0.02 | | Ni | ≤ 0.1 | | V | ≤ 0.03 | | Cu | ≤ 0.15 | | Al | ≤ 0.004 | | Ti | ≤ 0.025 | | Nb | ≤ 0.04 | | N | 0.009 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Nickel Vanadium Copper Aluminium Titanium Niobium 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 | 0,90-1,05 | 0.900 | 1.050 | Range | | N | 0,009 | 0.009 | 0.009 | Exact | | Al | ≤0,004 | — | 0.004 | Max | | Si | 0,20-0,60 | 0.200 | 0.600 | Range | | P | 0,02 | 0.020 | 0.020 | Exact | | S | 0,02 | 0.020 | 0.020 | Exact | | Ti | ≤0,025 | — | 0.025 | Max | | V | ≤0,030 | — | 0.030 | Max | | Cr | ≤0,30 | — | 0.300 | Max | | Mn | 1,00-1,30 | 1.000 | 1.300 | Range | | Ni | ≤0,10 | — | 0.100 | Max | | Cu | ≤0,15 | — | 0.150 | Max | | Nb | ≤0,040 | — | 0.040 | Max | | Mo | ≤0,02 | — | 0.020 | 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 This grade's composition falls outside the published model's validated range (a low-alloy composition window), so no transformation temperature is predicted here. ## 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. [G46Mn4 1.1159 Mn 0,90-1,20 · Si 0,25-0,50 - ΔMn 0.10 - ΔSi 0.03 - 2 designations](/materials/din-en/g46mn4 "G46Mn4")[65Mn4 1.1240 Mn 0,90-1,20 · Si 0,25-0,50 - ΔMn 0.10 - ΔSi 0.03 - 17 designations](/materials/din-en/65mn4 "65Mn4")[80Mn4 1.1259 Mn 0,90-1,20 · Si 0,25-0,50 - ΔMn 0.10 - ΔSi 0.03 - 2 designations](/materials/din-en/80mn4 "80Mn4")[G24Mn4 1.1136 Mn 0,90-1,20 · Si 0,30-0,60 - ΔMn 0.10 - ΔSi 0.05 - 2 designations](/materials/din-en/g24mn4 "G24Mn4")[25MnV5 1.1197 Mn 1,00-1,40 · Si 0,15-0,45 - ΔMn 0.05 - ΔSi 0.10 - 1 designations](/materials/din-en/25mnv5 "25MnV5")[46Mn5 1.1128 Mn 1,15-1,35 · Si 0,25-0,45 - ΔMn 0.10 - ΔSi 0.05 - 1 designations](/materials/din-en/46mn5 "46Mn5") ## 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=2068fd3a-4a75-418c-b8b1-3d75d0640eb1&designation=655898ca-0936-4a46-85e7-b0a946cbe363 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/r400ht.pdf "Datasheet as PDF")