--- title: "DD 11 — Unalloyed structural steels" description: "DD 11: 42 equivalent designations across 17 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/din-en/dd11 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/din-en/dd11.md cs: https://steelequivalents.com/cs/materiály/din-en/dd11.md de: https://steelequivalents.com/de/werkstoffe/din-en/dd11.md es: https://steelequivalents.com/es/materiales/din-en/dd11.md fr: https://steelequivalents.com/fr/matériaux/din-en/dd11.md hu: https://steelequivalents.com/hu/anyagok/din-en/dd11.md it: https://steelequivalents.com/it/materiali/din-en/dd11.md nl: https://steelequivalents.com/nl/materialen/din-en/dd11.md pl: https://steelequivalents.com/pl/materiały/din-en/dd11.md pt: https://steelequivalents.com/pt/materiais/din-en/dd11.md ru: https://steelequivalents.com/ru/материалы/din-en/dd11.md tr: https://steelequivalents.com/tr/malzemeler/din-en/dd11.md zh: https://steelequivalents.com/zh/材料/din-en/dd11.md ja: https://steelequivalents.com/ja/材料/din-en/dd11.md ar: https://steelequivalents.com/ar/المواد/din-en/dd11.md ko: https://steelequivalents.com/ko/재료/din-en/dd11.md pt-br: https://steelequivalents.com/pt-br/materiais/din-en/dd11.md hi: https://steelequivalents.com/hi/सामग्री/din-en/dd11.md content_hash: sha256:50573241c8e364cff18053491919104e19f0bd6d7e9ee6e1b7eb81b617cb24cf 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/din-en/dd11 > Canonical URL: https://steelequivalents.com/materials/din-en/dd11 > 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 · 42 designations # DD 11 DD 11 is a material in the category [Unalloyed structural steels](/categories/unalloyed-structural-steels "Unalloyed structural steels"), held under material number 1.0332. We list 41 designations recorded for this grade, in the standards DIN / EN, AISI / SAE, ASTM, BS, AFNOR, UNE, ISO, JIS, GB, GOST, UNI, ČSN, PN, AS / NZS, BDS, ÖNORM and KS. Its recorded composition includes C ≤ 0.12%, P 0.045%, S 0.045% and Mn ≤ 0.6%. Recorded mechanical properties include Rm 270 N/mm², ReH 170–360 N/mm² and A 28–39%; these figures vary with the delivery condition and dimension. Its recorded density is 7.85 g/cm³. - [*Material no.* **1.0332**](/materials/material-no/1.0332 "Material no.: 1.0332") - [*Category* **Unalloyed structural steels · 452 grades**](/categories/unalloyed-structural-steels "Category: Unalloyed structural steels · 452 grades") - *Designations* **42** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=f5b4caa2-45d4-4336-b3be-dea46b2d235c&designation=14b80664-b401-472c-9c44-7f1f6613e696 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/dd11.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN StW 22 This grade’s own name](/materials/din-en/stw-22 "DIN / EN StW 22") - [ASTM A 1011CS Type B This grade’s own name](/materials/astm/a-1011cs-type-b "ASTM A 1011CS Type B") - [KS SPHD This grade’s own name](/materials/ks/sphd "KS SPHD") ## 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 42 designations · 17 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 - [CS Indicative](/materials/din-en/cs "DIN / EN CS") - **DD 11 This grade’s own name** - [StW 22 This grade’s own name](/materials/din-en/stw-22 "DIN / EN StW 22") AISI / SAE United States · 11 - [1015 Indicative](/materials/aisi-sae/1015 "AISI / SAE 1015") - [1017 Indicative](/materials/aisi-sae/1017 "AISI / SAE 1017") - [A366 Indicative](/materials/aisi-sae/a366 "AISI / SAE A366") - [A621 Indicative](/materials/aisi-sae/a621 "AISI / SAE A621") - [A621CQ Indicative](/materials/aisi-sae/a621cq "AISI / SAE A621CQ") - [CS Indicative](/materials/din-en/cs "AISI / SAE CS") - [G10080 Indicative](/materials/uns/g10080 "AISI / SAE G10080") - [G10150 Indicative](/materials/uns/g10150 "AISI / SAE G10150") - [G10170 Indicative](/materials/uns/g10170 "AISI / SAE G10170") - [M1015 Indicative](/materials/aisi-sae/m1015 "AISI / SAE M1015") - [M1017 Indicative](/materials/aisi-sae/m1017 "AISI / SAE M1017") ASTM United States · 1 - [A 1011CS Type B This grade’s own name](/materials/astm/a-1011cs-type-b "ASTM A 1011CS Type B") BS United Kingdom · 4 - [1449-4HR Indicative](/materials/bs/1449-4hr "BS 1449-4HR") - [14HR Indicative](/materials/bs/14hr "BS 14HR") - **DD11 Indicative** - [HR3 Indicative](/materials/is/hr3 "BS HR3") AFNOR France · 2 - [1 C Indicative](/materials/afnor/1c "AFNOR 1 C") - **DD11 Indicative** UNE Spain · 2 - [AP11 Indicative](/materials/une/ap11 "UNE AP11") - **DD11 Indicative** ISO International · 1 - [HR2 Indicative](/materials/is/hr2 "ISO HR2") JIS Japan · 2 - [PHD Indicative](/materials/jis/phd "JIS PHD") - [SPHD Indicative](/materials/ks/sphd "JIS SPHD") GB China · 1 - [15F Indicative](/materials/gb/15f "GB 15F") GOST Russia / CIS · 3 - [15kp Indicative](/materials/bds/15kp "GOST 15kp") - [15кп Indicative](/materials/bds/15kp "GOST 15кп") - [ст.15кп Indicative](/materials/gost/st-15kp "GOST ст.15кп") UNI Italy · 1 - [FeP11 Indicative](/materials/uni/fep11 "UNI FeP11") ČSN Czechia · 2 - [11320 Indicative](/materials/csn/11320 "ČSN 11320") - [11331 Indicative](/materials/csn/11331 "ČSN 11331") PN Poland · 2 - [08J Indicative](/materials/pn/08j "PN 08J") - [15X Indicative](/materials/pn/15x "PN 15X") AS / NZS Australia / New Zealand · 2 - [CA1 Indicative](/materials/as-nzs/ca1 "AS / NZS CA1") - [HA1 Indicative](/materials/as-nzs/ha1 "AS / NZS HA1") BDS Bulgaria · 2 - [15kp Indicative](/materials/bds/15kp "BDS 15kp") - **DD11 Indicative** ÖNORM Austria · 2 - [St12F Indicative](/materials/onorm/st12f "ÖNORM St12F") - [St22F Indicative](/materials/onorm/st22f "ÖNORM St22F") KS South Korea · 1 - [SPHD This grade’s own name](/materials/ks/sphd "KS SPHD") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 4 elements on file · weight % What this alloy is Fe Mn C P Iron — the balance, never listed by a standard — 99.2 % Mn — 0.6 % 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 | ≤ 0.12 | | Mn | ≤ 0.6 | | P | 0.045 | | S | 0.045 | Carbon 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 | ≤0,12 | — | 0.120 | Max | | P | 0,045 | 0.045 | 0.045 | Exact | | S | 0,045 | 0.045 | 0.045 | Exact | | Mn | ≤0,60 | — | 0.600 | 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 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 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 3 conditions · 10 values By thickness**no delivery state stated** source `steelnumber` | Thickness mm | ReH N/mm² | A80% · Lo = 80 mm | A% · Lo = 5,65 √So | |---|---|---|---| | 1 – 2 | 170 – 360 | — | — | | 1 – 1.5 | — | 22 | — | | 1.5 – 2 | — | 23 | — | | 2 – 11 | 170 – 340 | — | — | | 2 – 3 | — | 24 | — | | 3 – 11 | — | — | 28 | By delivery state**no delivery state stated** source `steeljis` | Delivery state | Rm N/mm² | A% | |---|---|---| | Plate/Sheet Hot-rolled | 270 | 30 – 39 | By delivery state**no delivery state stated** source `steelks` | Delivery state | Rm N/mm² | A% | |---|---|---| | Plate/Sheet | 270 | 30 – 39 | 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. ## 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=f5b4caa2-45d4-4336-b3be-dea46b2d235c&designation=14b80664-b401-472c-9c44-7f1f6613e696 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/dd11.pdf "Datasheet as PDF")