--- title: "240M07EN 1B — Free cutting steels" description: "240M07EN 1B in BS: material number 1.0736, also listed as 11 SMn 37. Category: Free cutting steels. Designations recorded for this grade: 23." canonical: https://steelequivalents.com/materials/bs/240m07en-1b language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/bs/240m07en-1b.md cs: https://steelequivalents.com/cs/materiály/bs/240m07en-1b.md de: https://steelequivalents.com/de/werkstoffe/bs/240m07en-1b.md es: https://steelequivalents.com/es/materiales/bs/240m07en-1b.md fr: https://steelequivalents.com/fr/matériaux/bs/240m07en-1b.md hu: https://steelequivalents.com/hu/anyagok/bs/240m07en-1b.md it: https://steelequivalents.com/it/materiali/bs/240m07en-1b.md nl: https://steelequivalents.com/nl/materialen/bs/240m07en-1b.md pl: https://steelequivalents.com/pl/materiały/bs/240m07en-1b.md pt: https://steelequivalents.com/pt/materiais/bs/240m07en-1b.md ru: https://steelequivalents.com/ru/материалы/bs/240m07en-1b.md tr: https://steelequivalents.com/tr/malzemeler/bs/240m07en-1b.md zh: https://steelequivalents.com/zh/材料/bs/240m07en-1b.md ja: https://steelequivalents.com/ja/材料/bs/240m07en-1b.md ar: https://steelequivalents.com/ar/المواد/bs/240m07en-1b.md ko: https://steelequivalents.com/ko/재료/bs/240m07en-1b.md pt-br: https://steelequivalents.com/pt-br/materiais/bs/240m07en-1b.md hi: https://steelequivalents.com/hi/सामग्री/bs/240m07en-1b.md content_hash: sha256:1e18bd5757839984e4d271585e3ab4e040154e3158e00b0ad8ca70d8eb25ea53 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/240m07en-1b > Canonical URL: https://steelequivalents.com/materials/bs/240m07en-1b > 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 · 23 designations # 240M07EN 1B 240M07EN 1B is a designation in BS for the material held under material number 1.0736, also listed as 11 SMn 37. It is a material in the category Free cutting steels. We list 23 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, BS, AFNOR, UNE, JIS, GB, GOST, UNI, COPANT and KS. - [*Material no.* **1.0736**](/materials/material-no/1.0736 "Material no.: 1.0736") - [*Category* **Free cutting steels · 49 grades**](/categories/free-cutting-steels "Category: Free cutting steels · 49 grades") - *Designations* **23** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=35ae12a1-f823-4c36-98d4-c9691a4daac5&designation=c80e9c74-f850-4000-a913-391002e6ff47 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/bs/240m07en-1b.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN 11 SMn 37 This grade’s own name](/materials/din-en/11-smn-37 "DIN / EN 11 SMn 37") - [UNS G12150 This grade’s own name · 3 grades on that route](/materials/uns/g12150 "UNS G12150") - [AISI / SAE 1215 This grade’s own name · 4 grades on that route](/materials/aisi-sae/1215 "AISI / SAE 1215") - [JIS 12SMn35 This grade’s own name](/materials/jis/12smn35 "JIS 12SMn35") - [KS SUM25 This grade’s own name](/materials/ks/sum25 "KS SUM25") ## 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 23 designations · 12 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 · 3 - [1.0736 Indicative](/materials/material-no/1.0736 "DIN / EN 1.0736") - [11 SMn 37 This grade’s own name](/materials/din-en/11-smn-37 "DIN / EN 11 SMn 37") - [9 SMn 36 This grade’s own name](/materials/din-en/9-smn-36 "DIN / EN 9 SMn 36") UNS United States · 1 - [G12150 This grade’s own name](/materials/uns/g12150 "UNS G12150") AISI / SAE United States · 1 - [1215 This grade’s own name](/materials/aisi-sae/1215 "AISI / SAE 1215") BS United Kingdom · 6 - [1B Indicative](/materials/bs/1b "BS 1B") - [230M07 Indicative](/materials/bs/230m07 "BS 230M07") - [240M07 Indicative](/materials/bs/240m07 "BS 240M07") - [240M07EN Indicative](/materials/bs/240m07en "BS 240M07EN") - **240M07EN 1B Indicative** - [EN1B Indicative](/materials/bs/en1b "BS EN1B") AFNOR France · 1 - [S300 Indicative](/materials/afnor/s300 "AFNOR S300") UNE Spain · 3 - [12SMn35 Indicative](/materials/jis/12smn35 "UNE 12SMn35") - [F.2113 Indicative](/materials/une/f-2113 "UNE F.2113") - [F.2113-12 SMn 35 Indicative](/materials/une/f-2113-12-smn-35 "UNE F.2113-12 SMn 35") JIS Japan · 3 - [12SMn35 This grade’s own name](/materials/jis/12smn35 "JIS 12SMn35") - [SUM23 Indicative](/materials/ks/sum23 "JIS SUM23") - [SUM25 Indicative](/materials/ks/sum25 "JIS SUM25") GB China · 1 - [Y13 Indicative](/materials/gb/y13 "GB Y13") GOST Russia / CIS · 1 - [A12 Indicative](/materials/bds/a12 "GOST A12") UNI Italy · 1 - [CF9SMn36 Indicative](/materials/uni/cf9smn36 "UNI CF9SMn36") COPANT Latin America · 1 - [1215 Indicative](/materials/aisi-sae/1215 "COPANT 1215") KS South Korea · 1 - [SUM25 This grade’s own name](/materials/ks/sum25 "KS SUM25") 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 S C Iron — the balance, never listed by a standard — 98.1 % Mn — 1.3 % S — 0.4 % C — 0.1 % Traces & impurities · 0.2 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.14 | | Si | ≤ 0.05 | | Mn | 1–1.5 | | P | 0.11 | | S | 0.34–0.4 | 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 | ≤0,14 | — | 0.140 | Max | | Si | ≤0,05 | — | 0.050 | Max | | P | 0,11 | 0.110 | 0.110 | Exact | | S | 0,34-0,40 | 0.340 | 0.400 | Range | | Mn | 1,00-1,50 | 1.000 | 1.500 | 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. ## Properties by condition 2 conditions · 11 values By thickness**Cold drawn / hard** source `steelnumber` | Thickness mm | Rm N/mm² | A% | |---|---|---| | 5 – 10 | 510 – 810 | 6 | | 10 – 16 | 490 – 760 | 7 | | 16 – 40 | 460 – 710 | 8 | | 40 – 63 | 400 – 650 | 9 | | 63 – 100 | 360 – 630 | 9 | By delivery state**As rolled and turned** source `steelnumber` | Delivery state | HB | |---|---| | As rolled and turned | 107 – 169 | 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. ## 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. [1.0737 1.0737 Mn 1,00-1,50 · Si ≤0,05 - ΔMn 0.00 - ΔSi 0.00 - 13 designations](/materials/material-no/1.0737 "1.0737")[11 SMnPbTe 37 1.0738 Mn 1,00-1,50 · Si ≤0,05 - ΔMn 0.00 - ΔSi 0.00 - 1 designations](/materials/din-en/11-smnpbte-37 "11 SMnPbTe 37")[11 SMnPbBiTe 37 1.0739 Mn 1,00-1,50 · Si ≤0,05 - ΔMn 0.00 - ΔSi 0.00 - 1 designations](/materials/din-en/11-smnpbbite-37 "11 SMnPbBiTe 37")[1.0715 1.0715 Mn 0,90-1,30 · Si ≤0,05 - ΔMn 0.15 - ΔSi 0.00 - 27 designations](/materials/material-no/1.0715 "1.0715")[1.0718 1.0718 Mn 0,90-1,30 · Si ≤0,05 - ΔMn 0.15 - ΔSi 0.00 - 21 designations](/materials/material-no/1.0718 "1.0718")[11 SMnPbTe 30 1.0719 Mn 0,90-1,30 · Si ≤0,05 - ΔMn 0.15 - ΔSi 0.00 - 1 designations](/materials/din-en/11-smnpbte-30 "11 SMnPbTe 30") ## 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=35ae12a1-f823-4c36-98d4-c9691a4daac5&designation=c80e9c74-f850-4000-a913-391002e6ff47 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/bs/240m07en-1b.pdf "Datasheet as PDF")