--- title: "65Mn — 65Mn4, 17 equivalent designations" description: "65Mn in GB: material number 1.1240, also listed as 65Mn4. It is a material in the category Others. Designations recorded for this grade: 17." canonical: https://steelequivalents.com/materials/gb/65mn language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/gb/65mn.md cs: https://steelequivalents.com/cs/materiály/gb/65mn.md de: https://steelequivalents.com/de/werkstoffe/gb/65mn.md es: https://steelequivalents.com/es/materiales/gb/65mn.md fr: https://steelequivalents.com/fr/matériaux/gb/65mn.md hu: https://steelequivalents.com/hu/anyagok/gb/65mn.md it: https://steelequivalents.com/it/materiali/gb/65mn.md nl: https://steelequivalents.com/nl/materialen/gb/65mn.md pl: https://steelequivalents.com/pl/materiały/gb/65mn.md pt: https://steelequivalents.com/pt/materiais/gb/65mn.md ru: https://steelequivalents.com/ru/материалы/gb/65mn.md tr: https://steelequivalents.com/tr/malzemeler/gb/65mn.md zh: https://steelequivalents.com/zh/材料/gb/65mn.md ja: https://steelequivalents.com/ja/材料/gb/65mn.md ar: https://steelequivalents.com/ar/المواد/gb/65mn.md ko: https://steelequivalents.com/ko/재료/gb/65mn.md pt-br: https://steelequivalents.com/pt-br/materiais/gb/65mn.md hi: https://steelequivalents.com/hi/सामग्री/gb/65mn.md content_hash: sha256:fb6d7153ddab7c1017c41f0a6c03da77c9cac5b791324ec843e143a4b84d48ee 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/gb/65mn > Canonical URL: https://steelequivalents.com/materials/gb/65mn > 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. GB · China · 17 designations # 65Mn 65Mn is a designation in GB for the material held under material number 1.1240, also listed as 65Mn4. It is a material in the category Others. We list 17 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, BS, ISO, JIS, GB, GOST, ČSN, PN and STAS. - [*Material no.* **1.1240**](/materials/material-no/1.1240 "Material no.: 1.1240") - [*Category* **Others · 1754 grades**](/categories/others "Category: Others · 1754 grades") - *Designations* **17** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=e63fdd23-8798-451a-81d7-5901ec44c60b&designation=6b3c3b8e-1b33-4f98-9f88-97eab6a1ca93 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gb/65mn.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [UNS G10700 This grade’s own name · 7 grades on that route](/materials/uns/g10700 "UNS G10700") - [AISI / SAE 1070 This grade’s own name · 7 grades on that route](/materials/aisi-sae/1070 "AISI / SAE 1070") ## 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. ## Also known as 17 designations · 11 standards · nothing hidden This grade’s own name recorded in our sources as this grade’s own designation under that standard. Indicative taken from a published cross-reference table; a close match, not a guarantee of interchangeability. Verify against the mill certificate before ordering. Withdrawn designation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once. DIN / EN Europe · 1 - [65Mn4 This grade’s own name Withdrawn](/materials/din-en/65mn4 "DIN / EN 65Mn4") UNS United States · 2 - [G10700 This grade’s own name](/materials/uns/g10700 "UNS G10700") - [G15660 Indicative](/materials/uns/g15660 "UNS G15660") AISI / SAE United States · 5 - [1062 Indicative](/materials/aisi-sae/1062 "AISI / SAE 1062") - [1066 Indicative](/materials/aisi-sae/1066 "AISI / SAE 1066") - [1070 This grade’s own name](/materials/aisi-sae/1070 "AISI / SAE 1070") - [1566 Indicative](/materials/aisi-sae/1566 "AISI / SAE 1566") - [C1062 Indicative](/materials/aisi-sae/c1062 "AISI / SAE C1062") BS United Kingdom · 1 - [080A67 Indicative](/materials/bs/080a67 "BS 080A67") ISO International · 1 - [56Mn4 Indicative](/materials/din-en/56mn4 "ISO 56Mn4") JIS Japan · 1 - [SWRH67B Indicative](/materials/jis/swrh67b "JIS SWRH67B") GB China · 1 - **65Mn Indicative** GOST Russia / CIS · 2 - [65G Indicative](/materials/gost/65g "GOST 65G") - [65GA Indicative](/materials/gost/65ga "GOST 65GA") ČSN Czechia · 1 - [13 180 Indicative](/materials/csn/13180 "ČSN 13 180") PN Poland · 1 - [65G Indicative](/materials/gost/65g "PN 65G") STAS Romania · 1 - [65MN10 Indicative](/materials/stas/65mn10 "STAS 65MN10") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 5 elements on file · weight % What this alloy is Fe Mn C Si Iron — the balance, never listed by a standard — 97.9 % Mn — 1.1 % C — 0.6 % Si — 0.4 % Traces & impurities · 0.1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.6–0.7 | | Si | 0.25–0.5 | | Mn | 0.9–1.2 | | P | 0.035 | | S | 0.035 | Carbon Silicon Manganese Phosphorus Sulfur 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 | 0,60-0,70 | 0.600 | 0.700 | Range | | Si | 0,25-0,50 | 0.250 | 0.500 | Range | | P | 0,035 | 0.035 | 0.035 | Exact | | S | 0,035 | 0.035 | 0.035 | Exact | | Mn | 0,90-1,20 | 0.900 | 1.200 | 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, Cr, 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. ## Heat treatment Supply condition - Quenching and Tempering - Annealing and Tempering and Normalizing Supply condition - Normalizing - Annealing Conditions the standard permits on delivery. No temperature or medium is published for these, so no order and no alternation is implied. Source: [www.caishuku.com](https://www.caishuku.com/detail/azhlNWIxMzUyMDk_ "Source: www.caishuku.com") ## 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 0.00 - ΔSi 0.00 - 2 designations](/materials/din-en/g46mn4 "G46Mn4")[80Mn4 1.1259 Mn 0,90-1,20 · Si 0,25-0,50 - ΔMn 0.00 - ΔSi 0.00 - 2 designations](/materials/din-en/80mn4 "80Mn4")[8Mn4 1.1117 Mn 0,90-1,20 · Si 0,20-0,40 - ΔMn 0.00 - ΔSi 0.07 - 1 designations](/materials/din-en/8mn4 "8Mn4")[G24Mn4 1.1136 Mn 0,90-1,20 · Si 0,30-0,60 - ΔMn 0.00 - ΔSi 0.07 - 2 designations](/materials/din-en/g24mn4 "G24Mn4")[41Mn4 1.1175 Mn 0,80-1,10 · Si 0,25-0,50 - ΔMn 0.10 - ΔSi 0.00 - 1 designations](/materials/din-en/41mn4 "41Mn4")[R400HT 1.1254 Mn 1,00-1,30 · Si 0,20-0,60 - ΔMn 0.10 - ΔSi 0.03 - 1 designations](/materials/din-en/r400ht "R400HT") ## 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=e63fdd23-8798-451a-81d7-5901ec44c60b&designation=6b3c3b8e-1b33-4f98-9f88-97eab6a1ca93 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gb/65mn.pdf "Datasheet as PDF")