--- title: "ML10 — Unalloyed structural steels" description: "ML10 in GB: material number 1.0334, also listed as DD 12 G 1. Category: Unalloyed structural steels. Designations recorded for this grade: 29." canonical: https://steelequivalents.com/materials/gb/ml10 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/gb/ml10.md cs: https://steelequivalents.com/cs/materiály/gb/ml10.md de: https://steelequivalents.com/de/werkstoffe/gb/ml10.md es: https://steelequivalents.com/es/materiales/gb/ml10.md fr: https://steelequivalents.com/fr/matériaux/gb/ml10.md hu: https://steelequivalents.com/hu/anyagok/gb/ml10.md it: https://steelequivalents.com/it/materiali/gb/ml10.md nl: https://steelequivalents.com/nl/materialen/gb/ml10.md pl: https://steelequivalents.com/pl/materiały/gb/ml10.md pt: https://steelequivalents.com/pt/materiais/gb/ml10.md ru: https://steelequivalents.com/ru/материалы/gb/ml10.md tr: https://steelequivalents.com/tr/malzemeler/gb/ml10.md zh: https://steelequivalents.com/zh/材料/gb/ml10.md ja: https://steelequivalents.com/ja/材料/gb/ml10.md ar: https://steelequivalents.com/ar/المواد/gb/ml10.md ko: https://steelequivalents.com/ko/재료/gb/ml10.md pt-br: https://steelequivalents.com/pt-br/materiais/gb/ml10.md hi: https://steelequivalents.com/hi/सामग्री/gb/ml10.md content_hash: sha256:5c5684c533b9d87471cf5cd7780328ff4c179ac201a64513e360cd64e76d45f9 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/ml10 > Canonical URL: https://steelequivalents.com/materials/gb/ml10 > 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 · 29 designations # ML10 ML10 is a designation in GB for the material held under material number 1.0334, also listed as DD 12 G 1. It is a material in the category Unalloyed structural steels. We list 29 designations recorded for this grade, in the standards DIN / EN, AISI / SAE, ASTM, BS, AFNOR, UNE, ISO, JIS, GB, GOST, UNI and ČSN. - [*Material no.* **1.0334**](/materials/material-no/1.0334 "Material no.: 1.0334") - [*Category* **Unalloyed structural steels · 452 grades**](/categories/unalloyed-structural-steels "Category: Unalloyed structural steels · 452 grades") - *Designations* **29** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=f7e3752d-dd3a-453e-bccd-486e1ffea452&designation=2e740eb4-1967-4b70-aa1c-4dd4347383cc "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gb/ml10.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN DD 12 G 1 This grade’s own name · 2 grades on that route](/materials/din-en/dd-12-g-1 "DIN / EN DD 12 G 1") ## About Unalloyed structural steels Unalloyed structural steels include all low-carbon steels in which the iron companions do not exceed specified minimum values. The yield strength, formability and weldability are the decisive factors for their use. They are soft, pliable, tough and stretchy, but cannot be hardened by heat treatment. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 29 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 · 2 - [DD 12 G 1 This grade’s own name](/materials/din-en/dd-12-g-1 "DIN / EN DD 12 G 1") - [UStW 23 This grade’s own name](/materials/din-en/ustw-23 "DIN / EN UStW 23") AISI / SAE United States · 4 - [1008 Indicative](/materials/aisi-sae/1008 "AISI / SAE 1008") - [1010 Indicative](/materials/aisi-sae/1010 "AISI / SAE 1010") - [1012 Indicative](/materials/aisi-sae/1012 "AISI / SAE 1012") - [A621 Indicative](/materials/aisi-sae/a621 "AISI / SAE A621") ASTM United States · 1 - [1010 Indicative](/materials/aisi-sae/1010 "ASTM 1010") BS United Kingdom · 3 - [040A10 Indicative](/materials/bs/040a10 "BS 040A10") - [14HR Indicative](/materials/bs/14hr "BS 14HR") - [3HR Indicative](/materials/bs/3hr "BS 3HR") AFNOR France · 5 - [1C Indicative](/materials/afnor/1c "AFNOR 1C") - [2C Indicative](/materials/afnor/2c "AFNOR 2C") - [FB10 Indicative](/materials/afnor/fb10 "AFNOR FB10") - [FR10 Indicative](/materials/afnor/fr10 "AFNOR FR10") - [XC10 Indicative](/materials/afnor/xc10 "AFNOR XC10") UNE Spain · 1 - [AP12 Indicative](/materials/une/ap12 "UNE AP12") ISO International · 1 - [C10GC Indicative](/materials/iso/c10gc "ISO C10GC") JIS Japan · 6 - [SPH2A Indicative](/materials/jis/sph2a "JIS SPH2A") - [SPHD Indicative](/materials/ks/sphd "JIS SPHD") - [SPHE Indicative](/materials/ks/sphe "JIS SPHE") - [SWRCH10K Indicative](/materials/jis/swrch10k "JIS SWRCH10K") - [SWRCH10R Indicative](/materials/jis/swrch10r "JIS SWRCH10R") - [SWRCH12R Indicative](/materials/jis/swrch12r "JIS SWRCH12R") GB China · 2 - [10F Indicative](/materials/gb/10f "GB 10F") - **ML10 Indicative** GOST Russia / CIS · 2 - [10kp Indicative](/materials/gost/10kp "GOST 10kp") - [10кп Indicative](/materials/gost/10kp "GOST 10кп") UNI Italy · 1 - [FeP12 Indicative](/materials/uni/fep12 "UNI FeP12") ČSN Czechia · 1 - [12010 Indicative](/materials/csn/12010 "ČSN 12010") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 6 elements on file · weight % What this alloy is Fe Mn C P Iron — the balance, never listed by a standard — 99.5 % Mn — 0.3 % C — 0.1 % P — 0 % Traces & impurities · 0 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.1 | | Si | Trace | | Mn | 0.2–0.4 | | P | 0.025 | | S | 0.025 | | N | 0.007 | Carbon Silicon Manganese Phosphorus Sulfur 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 | ≤0,10 | — | 0.100 | Max | | N | 0,007 | 0.007 | 0.007 | Exact | | Si | Spuren/Traces | — | — | Trace | | P | 0,025 | 0.025 | 0.025 | Exact | | S | 0,025 | 0.025 | 0.025 | Exact | | Mn | 0,20-0,40 | 0.200 | 0.400 | 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: Si, Ni, Cr, Mo. ## Physical & mechanical properties Density 7,85 g/cm³ Exact Transformation point Ac1 732 °C Exact Transformation point Ac3 870 °C Exact · Ac3(Acm) Transformation point Ar3 854 °C Exact · Ar3(Arcm) Transformation point Ar1 680 °C Exact Weldability readily weldable As published: without limitations. Flake sensitivity not susceptible As published: not predisposed Temper brittleness not susceptible As published: not 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 · 58 values By delivery state**no delivery state stated** source `splav` | Delivery state | Rm N/mm² | Re N/mm² | A5% | Z% | HB | |---|---|---|---|---|---| | Pipe, GOST 10705-80 | 314 | 196 | 25 | — | — | | Steel cold-drawn , GOST 10702-78 | 372 | — | 8 | 55 | — | | (cold-drawn, cold-worked) , GOST 10702-78 | — | — | — | — | 179 | | Sheet GOST 4041-71 | — | — | — | — | 114 | | (annealing) , Sheet trick GOST 1577-93 | — | — | — | — | 137 | By dimension**no delivery state stated** source `splav` | Dimension mm | Rm N/mm² | A5% | |---|---|---| | 4 - 14 | 270 – 410 | 32 | By dimension**Normalizing** source `splav` | Dimension mm | Rm N/mm² | Re N/mm² | A5% | Z% | |---|---|---|---|---| | 6 - 60 | 310 | 185 | 33 | 55 | At temperature**no delivery state stated** source `splav` | Temperature °C | Density g/cm³ | Elastic modulus GPa | Thermal expansion coefficient 10^-6/K | Thermal conductivity W/(m·K) | Specific heat capacity J/(kg·K) | Electrical resistivity nΩ·m | |---|---|---|---|---|---|---| | 20 | 7.856 | 186 | — | — | — | — | | 100 | 7.832 | — | 12.4 | 58 | 466 | 190 | | 200 | 7.8 | — | 13.2 | 54 | 479 | 263 | | 300 | 7.765 | — | 13.9 | 49 | — | 352 | | 400 | 7.73 | — | 14.5 | 45 | 512 | 458 | | 500 | 7.692 | — | 14.9 | 40 | — | 584 | | 600 | 7.653 | — | 15.1 | 36 | 567 | 734 | | 700 | 7.613 | — | 15.3 | 32 | — | 905 | | 800 | 7.582 | — | 12.1 | 29 | — | 1081 | | 900 | 7.594 | — | 14.8 | 27 | — | 1130 | | 1000 | — | — | 12.6 | — | — | — | 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 - Normalizing Test specimen diameter d=25 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/azhlNWIxMzM0OQ__ "Source: www.caishuku.com") ## 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=f7e3752d-dd3a-453e-bccd-486e1ffea452&designation=2e740eb4-1967-4b70-aa1c-4dd4347383cc "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gb/ml10.pdf "Datasheet as PDF")