--- title: "CEW2BK — Unalloyed structural steels" description: "CEW2BK in BS: material number 1.0028, also listed as Ust 34-2. Category: Unalloyed structural steels. Designations recorded for this grade: 93." canonical: https://steelequivalents.com/materials/bs/cew2bk language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/bs/cew2bk.md cs: https://steelequivalents.com/cs/materiály/bs/cew2bk.md de: https://steelequivalents.com/de/werkstoffe/bs/cew2bk.md es: https://steelequivalents.com/es/materiales/bs/cew2bk.md fr: https://steelequivalents.com/fr/matériaux/bs/cew2bk.md hu: https://steelequivalents.com/hu/anyagok/bs/cew2bk.md it: https://steelequivalents.com/it/materiali/bs/cew2bk.md nl: https://steelequivalents.com/nl/materialen/bs/cew2bk.md pl: https://steelequivalents.com/pl/materiały/bs/cew2bk.md pt: https://steelequivalents.com/pt/materiais/bs/cew2bk.md ru: https://steelequivalents.com/ru/материалы/bs/cew2bk.md tr: https://steelequivalents.com/tr/malzemeler/bs/cew2bk.md zh: https://steelequivalents.com/zh/材料/bs/cew2bk.md ja: https://steelequivalents.com/ja/材料/bs/cew2bk.md ar: https://steelequivalents.com/ar/المواد/bs/cew2bk.md ko: https://steelequivalents.com/ko/재료/bs/cew2bk.md pt-br: https://steelequivalents.com/pt-br/materiais/bs/cew2bk.md hi: https://steelequivalents.com/hi/सामग्री/bs/cew2bk.md content_hash: sha256:3b4bf62c5404d6f042a073053a7651ed62fa6daf99e3fb1a791fddafc1bd876d 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/bs/cew2bk > Canonical URL: https://steelequivalents.com/materials/bs/cew2bk > 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 · 93 designations # CEW2BK CEW2BK is a designation in BS for the material held under material number 1.0028, also listed as Ust 34-2. It is a material in the category Unalloyed structural steels. We list 93 designations recorded for this grade, in the standards DIN / EN, AISI / SAE, BS, AFNOR, UNE, JIS, GB, GOST, UNI, SS, ČSN, PN, MSZ, STAS, BDS, ÖNORM, NBN, SFS and KS. - [*Material no.* **1.0028**](/materials/material-no/1.0028 "Material no.: 1.0028") - [*Category* **Unalloyed structural steels · 452 grades**](/categories/unalloyed-structural-steels "Category: Unalloyed structural steels · 452 grades") - *Designations* **93** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=7261a20e-9915-41fc-a839-1c401182dae0&designation=0c255fea-4215-4c04-8587-138ae579ce21 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/bs/cew2bk.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN S205G1T This grade’s own name](/materials/din-en/s205g1t "DIN / EN S205G1T") - [KS SS330 This grade’s own name · 2 grades on that route](/materials/ks/ss330 "KS SS330") ## 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 93 designations · 19 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. Superseded by the current name this withdrawn designation was replaced by — the same grade under its present designation, the one to order by today. DIN / EN Europe · 2 - [S205G1T This grade’s own name](/materials/din-en/s205g1t "DIN / EN S205G1T")Formerly Ust 34-2 - [Ust 34-2 This grade’s own name Withdrawn](/materials/din-en/ust-34-2 "DIN / EN Ust 34-2")Superseded by[S205G1T](/materials/din-en/s205g1t "S205G1T") AISI / SAE United States · 15 - [A284Gr.D Indicative](/materials/aisi-sae/a284gr-d "AISI / SAE A284Gr.D") - [A570Gr.33 Indicative](/materials/aisi-sae/a570gr-33 "AISI / SAE A570Gr.33") - [A570Gr.33,36 Indicative](/materials/aisi-sae/a570gr-33-36 "AISI / SAE A570Gr.33,36") - [A570Gr.36 Indicative](/materials/aisi-sae/a570gr-36 "AISI / SAE A570Gr.36") - [A573Gr.58 Indicative](/materials/aisi-sae/a573gr-58 "AISI / SAE A573Gr.58") - [A611(A) Indicative](/materials/aisi-sae/a611-a "AISI / SAE A611(A)") - [A611Gr.C Indicative](/materials/aisi-sae/a611gr-c "AISI / SAE A611Gr.C") - [Gr.C Indicative](/materials/aisi-sae/gr-c "AISI / SAE Gr.C") - [K01804 Indicative](/materials/uns/k01804 "AISI / SAE K01804") - [K02001 Indicative](/materials/uns/k02001 "AISI / SAE K02001") - [K02301 Indicative](/materials/uns/k02301 "AISI / SAE K02301") - [K02502 Indicative](/materials/uns/k02502 "AISI / SAE K02502") - [K02601 Indicative](/materials/uns/k02601 "AISI / SAE K02601") - [K02701 Indicative](/materials/uns/k02701 "AISI / SAE K02701") - [K02702 Indicative](/materials/uns/k02702 "AISI / SAE K02702") BS United Kingdom · 10 - [1449-37/23CR Indicative](/materials/bs/1449-37-23cr "BS 1449-37/23CR") - [37/23HR Indicative](/materials/bs/37-23hr "BS 37/23HR") - [4360-40D Indicative](/materials/bs/4360-40d "BS 4360-40D") - **CEW2BK Indicative** - [Fe360B Indicative](/materials/une/fe360b "BS Fe360B") - [Fe360D1FF Indicative](/materials/bs/fe360d1ff "BS Fe360D1FF") - [HFS4 Indicative](/materials/bs/hfs4 "BS HFS4") - [HFW4 Indicative](/materials/bs/hfw4 "BS HFW4") - [S235J2G3 Indicative](/materials/din-en/s235j2g3 "BS S235J2G3") - [S235JRG1 Indicative](/materials/din-en/s235jrg1 "BS S235JRG1") AFNOR France · 7 - [A34-2 Indicative](/materials/afnor/a34-2 "AFNOR A34-2") - [E24-3 Indicative](/materials/afnor/e24-3 "AFNOR E24-3") - [E24-4 Indicative](/materials/afnor/e24-4 "AFNOR E24-4") - [S235J0 Indicative](/materials/din-en/s235j0 "AFNOR S235J0") - [S235J2G3 Indicative](/materials/din-en/s235j2g3 "AFNOR S235J2G3") - [S235J2G4 Indicative](/materials/din-en/s235j2g4 "AFNOR S235J2G4") - [S235JRG1 Indicative](/materials/din-en/s235jrg1 "AFNOR S235JRG1") UNE Spain · 7 - [AE235B Indicative](/materials/une/ae235b "UNE AE235B") - [AE235B-FU Indicative](/materials/une/ae235b-fu "UNE AE235B-FU") - [AE235D Indicative](/materials/une/ae235d "UNE AE235D") - [Fe360D1FF Indicative](/materials/bs/fe360d1ff "UNE Fe360D1FF") - [S235J2G3 Indicative](/materials/din-en/s235j2g3 "UNE S235J2G3") - [S235JR Indicative](/materials/din-en/s235jr "UNE S235JR") - [S235JRG1 Indicative](/materials/din-en/s235jrg1 "UNE S235JRG1") JIS Japan · 2 - [SS330 Indicative](/materials/ks/ss330 "JIS SS330") - [STKM12A Indicative](/materials/jis/stkm12a "JIS STKM12A") GB China · 8 - [A3 Indicative](/materials/din-en/a3 "GB A3") - [Q235 Indicative](/materials/gb/q235 "GB Q235") - [Q235A Indicative](/materials/gb/q235-a "GB Q235A") - [Q235A-F Indicative](/materials/gb/q235a-f "GB Q235A-F") - [Q235A-Z Indicative](/materials/gb/q235a-z "GB Q235A-Z") - [Q235B Indicative](/materials/gb/q235b "GB Q235B") - [Q235B-F Indicative](/materials/gb/q235b-f "GB Q235B-F") - [Q235B-Z Indicative](/materials/gb/q235b-z "GB Q235B-Z") GOST Russia / CIS · 6 - [16D Indicative](/materials/gost/16d "GOST 16D") - [16Д Indicative](/materials/gost/16d "GOST 16Д") - [16Д-Ш Indicative](/materials/gost/16d-sh "GOST 16Д-Ш") - [18kp Indicative](/materials/gost/18kp "GOST 18kp") - [18кп Indicative](/materials/gost/18kp "GOST 18кп") - [St3kp Indicative](/materials/gost/st3kp "GOST St3kp") UNI Italy · 12 - [Fe330 Indicative](/materials/uni/fe330 "UNI Fe330") - [Fe360B Indicative](/materials/une/fe360b "UNI Fe360B") - [Fe360BFU Indicative](/materials/bs/fe360bfu "UNI Fe360BFU") - [Fe360C Indicative](/materials/iso/fe360c "UNI Fe360C") - [Fe360CFN Indicative](/materials/uni/fe360cfn "UNI Fe360CFN") - [Fe360D Indicative](/materials/uni/fe360d "UNI Fe360D") - [Fe360DFF Indicative](/materials/uni/fe360dff "UNI Fe360DFF") - [Fe37-2 Indicative](/materials/uni/fe37-2 "UNI Fe37-2") - [S235J0 Indicative](/materials/din-en/s235j0 "UNI S235J0") - [S235J2G3 Indicative](/materials/din-en/s235j2g3 "UNI S235J2G3") - [S235J2G4 Indicative](/materials/din-en/s235j2g4 "UNI S235J2G4") - [S235JRG1 Indicative](/materials/din-en/s235jrg1 "UNI S235JRG1") SS Sweden · 3 - [1311 Indicative](/materials/gost/1311 "SS 1311") - [1312 Indicative](/materials/gost/1312 "SS 1312") - [1313 Indicative](/materials/gost/1313 "SS 1313") ČSN Czechia · 3 - [11343 Indicative](/materials/csn/11343 "ČSN 11343") - [11373 Indicative](/materials/csn/11373 "ČSN 11373") - [11378 Indicative](/materials/csn/11378 "ČSN 11378") PN Poland · 2 - [St3SX Indicative](/materials/pn/st3sx "PN St3SX") - [St3W Indicative](/materials/pn/st3w "PN St3W") MSZ Hungary · 4 - [Fe235B/FU Indicative](/materials/msz/fe235b-fu "MSZ Fe235B/FU") - [Fe235D Indicative](/materials/msz/fe235d "MSZ Fe235D") - [S235J2G3 Indicative](/materials/din-en/s235j2g3 "MSZ S235J2G3") - [S235JRG1 Indicative](/materials/din-en/s235jrg1 "MSZ S235JRG1") STAS Romania · 1 - [OL37.4 Indicative](/materials/stas/ol37-4 "STAS OL37.4") BDS Bulgaria · 5 - [BSt3kp Indicative](/materials/bds/bst3kp "BDS BSt3kp") - [Ew-08AA Indicative](/materials/bds/ew-08aa "BDS Ew-08AA") - [S235J2G3 Indicative](/materials/din-en/s235j2g3 "BDS S235J2G3") - [S235JRG1 Indicative](/materials/din-en/s235jrg1 "BDS S235JRG1") - [WSt3kp Indicative](/materials/bds/wst3kp "BDS WSt3kp") ÖNORM Austria · 2 - [St34RG Indicative](/materials/onorm/st34rg "ÖNORM St34RG") - [St37TK Indicative](/materials/onorm/st37tk "ÖNORM St37TK") NBN Belgium · 2 - [FE360B Indicative](/materials/une/fe360b "NBN FE360B") - [FED1FF Indicative](/materials/nbn/fed1ff "NBN FED1FF") SFS Finland · 1 - [RACOLD215S Indicative](/materials/sfs/racold215s "SFS RACOLD215S") KS South Korea · 1 - [SS330 This grade’s own name](/materials/ks/ss330 "KS SS330") 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 — 99.4 % Mn — 0.4 % C — 0.2 % P — 0.1 % Traces & impurities · 0.1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.15 | | Si | Trace | | Mn | 0.2–0.5 | | P | 0.05 | | S | 0.05 | | 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 | ≤0,15 | — | 0.150 | Max | | N | 0,007 | 0.007 | 0.007 | Exact | | Si | Spuren/Traces | — | — | Trace | | P | 0,05 | 0.050 | 0.050 | Exact | | S | 0,05 | 0.050 | 0.050 | Exact | | Mn | 0,20-0,50 | 0.200 | 0.500 | 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: 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 2 conditions · 6 values By dimension**As-delivered state** source `splav` | Dimension mm | Rm N/mm² | Re N/mm² | A5% | |---|---|---|---| | 4 - 20 | 365 – 490 | 235 | 26 | By delivery state**no delivery state stated** source `steeljis` | Delivery state | Rm N/mm² | Re N/mm² | A% | |---|---|---|---| | Hot-rolled | 330 – 430 | 165 – 205 | 21 – 28 | 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=7261a20e-9915-41fc-a839-1c401182dae0&designation=0c255fea-4215-4c04-8587-138ae579ce21 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/bs/cew2bk.pdf "Datasheet as PDF")