--- title: "1449-2 — Unalloyed structural steels" description: "1449-2 in BS: material number 1.0330, also listed as DC 01. Category: Unalloyed structural steels. Designations recorded for this grade: 42." canonical: https://steelequivalents.com/materials/bs/1449-2 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/bs/1449-2.md cs: https://steelequivalents.com/cs/materiály/bs/1449-2.md de: https://steelequivalents.com/de/werkstoffe/bs/1449-2.md es: https://steelequivalents.com/es/materiales/bs/1449-2.md fr: https://steelequivalents.com/fr/matériaux/bs/1449-2.md hu: https://steelequivalents.com/hu/anyagok/bs/1449-2.md it: https://steelequivalents.com/it/materiali/bs/1449-2.md nl: https://steelequivalents.com/nl/materialen/bs/1449-2.md pl: https://steelequivalents.com/pl/materiały/bs/1449-2.md pt: https://steelequivalents.com/pt/materiais/bs/1449-2.md ru: https://steelequivalents.com/ru/материалы/bs/1449-2.md tr: https://steelequivalents.com/tr/malzemeler/bs/1449-2.md zh: https://steelequivalents.com/zh/材料/bs/1449-2.md ja: https://steelequivalents.com/ja/材料/bs/1449-2.md ar: https://steelequivalents.com/ar/المواد/bs/1449-2.md ko: https://steelequivalents.com/ko/재료/bs/1449-2.md pt-br: https://steelequivalents.com/pt-br/materiais/bs/1449-2.md hi: https://steelequivalents.com/hi/सामग्री/bs/1449-2.md content_hash: sha256:11cdd4ea92d7f28e8d614cd07b938b59b540318fda6533cb199921ddb941ee8a 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/1449-2 > Canonical URL: https://steelequivalents.com/materials/bs/1449-2 > 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 · 42 designations # 1449-2 1449-2 is a designation in BS for the material held under material number 1.0330, also listed as DC 01. It is a material in the category Unalloyed structural steels. We list 42 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, ASTM, BS, AFNOR, UNE, ISO, JIS, GB, GOST, UNI, SS, ČSN, PN, STN, BDS and ÖNORM. - [*Material no.* **1.0330**](/materials/material-no/1.0330 "Material no.: 1.0330") - [*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=ab7bb1e3-8230-4027-ba7a-deedd3cddc58&designation=cd3182b5-4b73-4337-bd1f-6d5a96dec946 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/bs/1449-2.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN DC 01 This grade’s own name](/materials/din-en/dc01 "DIN / EN DC 01") - [UNS G10080 This grade’s own name · 10 grades on that route](/materials/uns/g10080 "UNS G10080") - [AISI / SAE 1008 This grade’s own name · 14 grades on that route](/materials/aisi-sae/1008 "AISI / SAE 1008") - [GB DC01 This grade’s own name](/materials/din-en/dc01 "GB DC01") ## 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 · 18 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 · 5 - [DC 01 This grade’s own name](/materials/din-en/dc01 "DIN / EN DC 01") - [FeP01 Indicative](/materials/afnor/fep01 "DIN / EN FeP01") - [SAE1010 Indicative](/materials/din-en/sae1010 "DIN / EN SAE1010") - [St 12 This grade’s own name Withdrawn](/materials/din-en/st-12 "DIN / EN St 12") - [St 2 This grade’s own name](/materials/din-en/st-2 "DIN / EN St 2") UNS United States · 1 - [G10080 This grade’s own name](/materials/uns/g10080 "UNS G10080") AISI / SAE United States · 7 - [1008 This grade’s own name](/materials/aisi-sae/1008 "AISI / SAE 1008") - [1012 Indicative](/materials/aisi-sae/1012 "AISI / SAE 1012") - [A620 Indicative](/materials/aisi-sae/a620 "AISI / SAE A620") - [A622 Indicative](/materials/aisi-sae/a622 "AISI / SAE A622") - [G10080 Indicative](/materials/uns/g10080 "AISI / SAE G10080") - [SAE1008 Indicative](/materials/din-en/sae1008 "AISI / SAE SAE1008") - [SAE1010 Indicative](/materials/din-en/sae1010 "AISI / SAE SAE1010") ASTM United States · 2 - [A366 Indicative](/materials/aisi-sae/a366 "ASTM A366") - [A619 Indicative](/materials/aisi-sae/a619 "ASTM A619") BS United Kingdom · 3 - **1449-2 Indicative** - [CR4 Indicative](/materials/is/cr4 "BS CR4") - [FeP01 Indicative](/materials/afnor/fep01 "BS FeP01") AFNOR France · 4 - [3C Indicative](/materials/afnor/3c "AFNOR 3C") - [C Indicative](/materials/afnor/c "AFNOR C") - [F12 Indicative](/materials/afnor/f12 "AFNOR F12") - [FeP01 Indicative](/materials/afnor/fep01 "AFNOR FeP01") UNE Spain · 1 - [AP00 Indicative](/materials/une/ap00 "UNE AP00") ISO International · 2 - [Cr01 Indicative](/materials/iso/cr01 "ISO Cr01") - [CR22 Indicative](/materials/iso/cr22 "ISO CR22") JIS Japan · 2 - [SPCC Indicative](/materials/jis/spcc "JIS SPCC") - [SPHE Indicative](/materials/ks/sphe "JIS SPHE") GB China · 3 - [08 Indicative](/materials/bds/08 "GB 08") - [08F Indicative](/materials/gb/08f "GB 08F") - [DC01 This grade’s own name](/materials/din-en/dc01 "GB DC01") GOST Russia / CIS · 2 - [08kp Indicative](/materials/gost/08kp "GOST 08kp") - [08ps Indicative](/materials/bds/08ps "GOST 08ps") UNI Italy · 1 - [FeP01 Indicative](/materials/afnor/fep01 "UNI FeP01") SS Sweden · 1 - [1142 Indicative](/materials/ss/1142 "SS 1142") ČSN Czechia · 4 - [11300 Indicative](/materials/csn/11300 "ČSN 11300") - [11304 Indicative](/materials/csn/11304 "ČSN 11304") - [11321 Indicative](/materials/csn/11321 "ČSN 11321") - [11331 Indicative](/materials/csn/11331 "ČSN 11331") PN Poland · 1 - [08Y Indicative](/materials/pn/08y "PN 08Y") STN Slovakia · 1 - [11 321 Indicative](/materials/csn/11321 "STN 11 321") BDS Bulgaria · 1 - [08ps Indicative](/materials/bds/08ps "BDS 08ps") ÖNORM Austria · 1 - [St02F Indicative](/materials/onorm/st02f "ÖNORM St02F") 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 Rm ≥325 N/mm² Min A ≥33% Min Density 7,85 g/cm³ Exact Transformation point Ac1 735 °C Exact Transformation point Ac3 874 °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 7 conditions · 73 values By delivery state**no delivery state stated** source `splav` | Delivery state | Rm N/mm² | A5% | Z% | HB | |---|---|---|---|---| | Rolled stock, GOST 10702-78 | 370 | 8 | 55 | — | | (hot-rolled) , GOST 1050-88 | — | — | — | 131 | | (cold-drawn, cold-worked) , GOST 1050-88 | — | — | — | 179 | | Sheet GOST 4041-71 | — | — | — | 109 | | Rolled stock GOST 1050-88 | — | — | — | 131 | By delivery state**Soft annealed** source `steelnumber` | Delivery state | HV | |---|---| | Soft annealed | 105 | By dimension**no delivery state stated** source `splav` | Dimension mm | Rm N/mm² | A5% | |---|---|---| | 4 - 8 | 270 – 410 | 32 | By heat-treated condition**no delivery state stated** source `splav` | Heat-treated condition | Rm N/mm² | Z% | |---|---|---| | Bar cold-drawn , GOST 10702-78 | 310 – 410 | 55 | By dimension**Normalizing** source `splav` | Dimension mm | Rm N/mm² | Re N/mm² | A5% | Z% | |---|---|---|---|---| | to 80 | 320 | 196 | 33 | 60 | By dimension**Normalizing** source `splav` | Dimension mm | Rm N/mm² | Re N/mm² | A5% | Z% | |---|---|---|---|---| | 6 - 60 | 320 | 196 | 33 | 60 | 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 | 7.871 | 203 | — | — | — | — | | 100 | 7.846 | 207 | 12.5 | 60 | 482 | 178 | | 200 | 7.814 | 182 | 13.4 | 56 | 498 | 252 | | 300 | 7.781 | 153 | 14 | 51 | 514 | 341 | | 400 | 7.745 | 141 | 14.5 | 47 | 533 | 448 | | 500 | 7.708 | — | 14.9 | 41 | 555 | 575 | | 600 | 7.668 | — | 15.1 | 37 | 584 | 725 | | 700 | 7.628 | — | 15.3 | 34 | 626 | 898 | | 800 | 7.598 | — | 14.7 | 30 | 695 | 1073 | | 900 | 7.602 | — | 12.7 | 27 | 703 | 1124 | | 1000 | — | — | 13.8 | — | 695 | — | 1 further values are held for this grade under a condition the source did not name — a bound with no quantity attached. They are withheld rather than shown against a guessed condition. 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=ab7bb1e3-8230-4027-ba7a-deedd3cddc58&designation=cd3182b5-4b73-4337-bd1f-6d5a96dec946 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/bs/1449-2.pdf "Datasheet as PDF")