--- title: "226M44 — Free cutting steels" description: "226M44 in BS: material number 1.0762, also listed as 44 SMn 28. Category: Free cutting steels. Designations recorded for this grade: 52." canonical: https://steelequivalents.com/materials/bs/226m44 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/bs/226m44.md cs: https://steelequivalents.com/cs/materiály/bs/226m44.md de: https://steelequivalents.com/de/werkstoffe/bs/226m44.md es: https://steelequivalents.com/es/materiales/bs/226m44.md fr: https://steelequivalents.com/fr/matériaux/bs/226m44.md hu: https://steelequivalents.com/hu/anyagok/bs/226m44.md it: https://steelequivalents.com/it/materiali/bs/226m44.md nl: https://steelequivalents.com/nl/materialen/bs/226m44.md pl: https://steelequivalents.com/pl/materiały/bs/226m44.md pt: https://steelequivalents.com/pt/materiais/bs/226m44.md ru: https://steelequivalents.com/ru/материалы/bs/226m44.md tr: https://steelequivalents.com/tr/malzemeler/bs/226m44.md zh: https://steelequivalents.com/zh/材料/bs/226m44.md ja: https://steelequivalents.com/ja/材料/bs/226m44.md ar: https://steelequivalents.com/ar/المواد/bs/226m44.md ko: https://steelequivalents.com/ko/재료/bs/226m44.md pt-br: https://steelequivalents.com/pt-br/materiais/bs/226m44.md hi: https://steelequivalents.com/hi/सामग्री/bs/226m44.md content_hash: sha256:35ca52ba49b87088acf4988704e62f32b0999b4028acc7da5d1b70e7c3c5081a generated: 2026-09-22 --- > **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/bs/226m44 > Canonical URL: https://steelequivalents.com/materials/bs/226m44 > 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. BS · United Kingdom · 52 designations # 226M44 226M44 is a designation in BS for the material held under material number 1.0762, also listed as 44 SMn 28. It is a material in the category Free cutting steels. We list 52 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, ASTM, BS, AFNOR, UNE, ISO, JIS, GB, GOST, UNI, SS, ČSN, COPANT, PN, MSZ, STAS, AS / NZS, BDS and KS. - [*Material no.* **1.0762**](/materials/material-no/1.0762 "Material no.: 1.0762") - [*Category* **Free cutting steels · 49 grades**](/categories/free-cutting-steels "Category: Free cutting steels · 49 grades") - *Designations* **52** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=8ea7555e-e586-4735-9a45-ea97d083455f&designation=b16a4a2b-05b8-4a04-93c9-d64c9485cc6c "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/bs/226m44.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN 44 SMn 28 This grade’s own name](/materials/jis/44smn28 "DIN / EN 44 SMn 28") - [UNS G11440 This grade’s own name](/materials/uns/g11440 "UNS G11440") - [AISI / SAE 1144 This grade’s own name](/materials/aisi-sae/1144 "AISI / SAE 1144") - [JIS 44SMn28 This grade’s own name](/materials/jis/44smn28 "JIS 44SMn28") - [KS SUM43 This grade’s own name](/materials/ks/sum43 "KS SUM43") ## About Free cutting steels Free-cutting steels are steels formulated to machine readily and produce manageable chips during cutting. Their machinability makes them suitable for turned, drilled and threaded components produced in high volumes, including small precision parts and fasteners. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 52 designations · 21 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 · 2 - [40S20 Indicative](/materials/din-en/40s20 "DIN / EN 40S20") - [44 SMn 28 This grade’s own name](/materials/jis/44smn28 "DIN / EN 44 SMn 28") UNS United States · 1 - [G11440 This grade’s own name](/materials/uns/g11440 "UNS G11440") AISI / SAE United States · 11 - [1141 Indicative](/materials/aisi-sae/1141 "AISI / SAE 1141") - [1144 This grade’s own name](/materials/aisi-sae/1144 "AISI / SAE 1144") - [1345 Indicative](/materials/aisi-sae/1345 "AISI / SAE 1345") - [1345H Indicative](/materials/aisi-sae/1345h "AISI / SAE 1345H") - [C1144 Indicative](/materials/astm/c1144 "AISI / SAE C1144") - [G11410 Indicative](/materials/uns/g11410 "AISI / SAE G11410") - [G11440 Indicative](/materials/uns/g11440 "AISI / SAE G11440") - [G11444 Indicative](/materials/aisi-sae/g11444 "AISI / SAE G11444") - [G11460 Indicative](/materials/uns/g11460 "AISI / SAE G11460") - [G13450 Indicative](/materials/uns/g13450 "AISI / SAE G13450") - [H13450 Indicative](/materials/uns/h13450 "AISI / SAE H13450") ASTM United States · 1 - [C1144 Indicative](/materials/astm/c1144 "ASTM C1144") BS United Kingdom · 4 - [216M36 Indicative](/materials/bs/216m36 "BS 216M36") - [225M36 Indicative](/materials/bs/225m36 "BS 225M36") - **226M44 Indicative** - [44SMn28 Indicative](/materials/jis/44smn28 "BS 44SMn28") AFNOR France · 2 - [45MF4 Indicative](/materials/afnor/45mf4 "AFNOR 45MF4") - [45MF6 Indicative](/materials/afnor/45mf6 "AFNOR 45MF6") UNE Spain · 1 - [45MnS6 Indicative](/materials/une/45mns6 "UNE 45MnS6") ISO International · 2 - [35SMn20 Indicative](/materials/jis/35smn20 "ISO 35SMn20") - [44SMn28 Indicative](/materials/jis/44smn28 "ISO 44SMn28") JIS Japan · 6 - [44SMn28 This grade’s own name](/materials/jis/44smn28 "JIS 44SMn28") - [SMn3 Indicative](/materials/jis/smn3 "JIS SMn3") - [SMn433 Indicative](/materials/jis/smn433 "JIS SMn433") - [SMn433H Indicative](/materials/jis/smn433h "JIS SMn433H") - [SUM42 Indicative](/materials/jis/sum42 "JIS SUM42") - [SUM43 Indicative](/materials/ks/sum43 "JIS SUM43") GB China · 3 - [45Mn2 Indicative](/materials/gb/45mn2 "GB 45Mn2") - [45Mn2A Indicative](/materials/gb/45mn2a "GB 45Mn2A") - [Y40Mn Indicative](/materials/gb/y40mn "GB Y40Mn") GOST Russia / CIS · 5 - [45G2 Indicative](/materials/pn/45g2 "GOST 45G2") - [45Г2 Indicative](/materials/pn/45g2 "GOST 45Г2") - [A40G Indicative](/materials/gost/a40g "GOST A40G") - [А40G Indicative](/materials/gost/a40g "GOST А40G") - [А40Г Indicative](/materials/gost/a40g "GOST А40Г") UNI Italy · 1 - [CF44SMn28 Indicative](/materials/uni/cf44smn28 "UNI CF44SMn28") SS Sweden · 1 - [2120 Indicative](/materials/ss/2120 "SS 2120") ČSN Czechia · 1 - [11140 Indicative](/materials/csn/11140 "ČSN 11140") COPANT Latin America · 1 - [1144 Indicative](/materials/aisi-sae/1144 "COPANT 1144") PN Poland · 3 - [45G2 Indicative](/materials/pn/45g2 "PN 45G2") - [A35G2 Indicative](/materials/pn/a35g2 "PN A35G2") - [A45 Indicative](/materials/bds/a45 "PN A45") MSZ Hungary · 1 - [ANS2 Indicative](/materials/msz/ans2 "MSZ ANS2") STAS Romania · 1 - [AUT40Mn Indicative](/materials/stas/aut40mn "STAS AUT40Mn") AS / NZS Australia / New Zealand · 1 - [X1345 Indicative](/materials/as-nzs/x1345 "AS / NZS X1345") BDS Bulgaria · 3 - [44SMn28 Indicative](/materials/jis/44smn28 "BDS 44SMn28") - [45G2 Indicative](/materials/pn/45g2 "BDS 45G2") - [A45 Indicative](/materials/bds/a45 "BDS A45") KS South Korea · 1 - [SUM43 This grade’s own name](/materials/ks/sum43 "KS SUM43") 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 — 97.3 % Mn — 1.5 % C — 0.4 % Si — 0.4 % Traces & impurities · 0.3 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.4–0.48 | | Si | ≤ 0.4 | | Mn | 1.3–1.7 | | P | 0.06 | | S | 0.24–0.33 | 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 | 0,40-0,48 | 0.400 | 0.480 | Range | | Si | ≤0,40 | — | 0.400 | Max | | P | 0,06 | 0.060 | 0.060 | Exact | | S | 0,24-0,33 | 0.240 | 0.330 | Range | | Mn | 1,30-1,70 | 1.300 | 1.700 | 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 Transformation point Ac1 730 °C Exact Transformation point Ac3 830 °C Exact · Ac3(Acm) Flake sensitivity susceptible As published: predisposed Temper brittleness susceptible As published: predisposed 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. ## Properties by condition 4 conditions · 18 values By thickness**Cold drawn / hard** source `steelnumber` | Thickness mm | Rm N/mm² | A% | |---|---|---| | 5 – 10 | 760 – 1030 | 5 | | 10 – 16 | 710 – 980 | 5 | | 16 – 40 | 660 – 900 | 6 | | 40 – 63 | 650 – 870 | 7 | | 63 – 100 | 630 – 840 | 7 | By delivery state**no delivery state stated** source `splav` | Delivery state | Rm N/mm² | A5% | Z% | HB | |---|---|---|---|---| | Rolled stock hotrolled, GOST 1414-75 | 590 | 14 | 20 | — | | Rolled stock GOST 1414-75 | — | — | — | 207 | | (annealing) , Rolled stock GOST 1414-75 | — | — | — | 229 | By heat-treated condition**no delivery state stated** source `splav` | Heat-treated condition | Rm N/mm² | A5% | |---|---|---| | Rolled stock cold-drawn , GOST 1414-75 | 590 | 17 | By delivery state**As rolled and turned** source `steelnumber` | Delivery state | HB | |---|---| | As rolled and turned | 181 – 242 | Every figure holds only for the condition on its own row. Values are never merged across conditions or across sources, never averaged, and never interpolated between two rows. An em dash means no value on file — never zero. Figures are converted to the unit in the column header; the source’s own wording is kept and shown where the two differ. ## Heat treatment Supply condition - Tempering - Tempering 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/azhlNWIxMzYzMzc_ "Source: www.caishuku.com") ## Similar grades — and why Selection rule, stated so you can disagree with it: same number class 1.0, 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. [44 SMnPb 28 1.0763 Mn 1,30-1,70 · Si ≤0,40 - ΔMn 0.00 - ΔSi 0.00 - 1 designations](/materials/din-en/44-smnpb-28 "44 SMnPb 28")[36 SMn 14 1.0764 Mn 1,30-1,70 · Si ≤0,40 - ΔMn 0.00 - ΔSi 0.00 - 5 designations](/materials/din-en/36-smn-14 "36 SMn 14")[36 SMnPb 14 1.0765 Mn 1,30-1,70 · Si ≤0,40 - ΔMn 0.00 - ΔSi 0.00 - 3 designations](/materials/din-en/36-smnpb-14 "36 SMnPb 14")[37 S 10 1.0713 Mn 1,35-1,65 · Si 0,10-0,35 - ΔMn 0.00 - ΔSi 0.02 - 2 designations](/materials/din-en/37-s-10 "37 S 10")[18 S 10 1.0712 Mn 1,30-1,60 · Si 0,10-0,35 - ΔMn 0.05 - ΔSi 0.02 - 5 designations](/materials/din-en/18-s-10 "18 S 10")[38 SMn 28 1.0760 Mn 1,20-1,50 · Si ≤0,40 - ΔMn 0.15 - ΔSi 0.00 - 3 designations](/materials/din-en/38-smn-28 "38 SMn 28") ## 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=8ea7555e-e586-4735-9a45-ea97d083455f&designation=b16a4a2b-05b8-4a04-93c9-d64c9485cc6c "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/bs/226m44.pdf "Datasheet as PDF")