--- title: "CHS17 — Unalloyed structural steels" description: "CHS17 in GOST: material number 1.0570, also listed as St 52-3. Category: Unalloyed structural steels. Designations recorded for this grade: 112." canonical: https://steelequivalents.com/materials/gost/chs17 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/gost/chs17.md cs: https://steelequivalents.com/cs/materiály/gost/chs17.md de: https://steelequivalents.com/de/werkstoffe/gost/chs17.md es: https://steelequivalents.com/es/materiales/gost/chs17.md fr: https://steelequivalents.com/fr/matériaux/gost/chs17.md hu: https://steelequivalents.com/hu/anyagok/gost/chs17.md it: https://steelequivalents.com/it/materiali/gost/chs17.md nl: https://steelequivalents.com/nl/materialen/gost/chs17.md pl: https://steelequivalents.com/pl/materiały/gost/chs17.md pt: https://steelequivalents.com/pt/materiais/gost/chs17.md ru: https://steelequivalents.com/ru/материалы/gost/chs17.md tr: https://steelequivalents.com/tr/malzemeler/gost/chs17.md zh: https://steelequivalents.com/zh/材料/gost/chs17.md ja: https://steelequivalents.com/ja/材料/gost/chs17.md ar: https://steelequivalents.com/ar/المواد/gost/chs17.md ko: https://steelequivalents.com/ko/재료/gost/chs17.md pt-br: https://steelequivalents.com/pt-br/materiais/gost/chs17.md hi: https://steelequivalents.com/hi/सामग्री/gost/chs17.md content_hash: sha256:6364fd78d4d6735962c1f79972ba4117c4c470a80692e36ce7cda1aa0d5926cf 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/gost/chs17 > Canonical URL: https://steelequivalents.com/materials/gost/chs17 > 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. GOST · Russia / CIS · 112 designations # CHS17 CHS17 is a designation in GOST for the material held under material number 1.0570, also listed as St 52-3. It is a material in the category Unalloyed structural steels. We list 112 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, ASTM, BS, AFNOR, UNE, JIS, GB, GOST, UNI, SS, ČSN, STN, PN, SRPS, MSZ, STAS, BDS, SANS, ÖNORM, NBN and KS. - [*Material no.* **1.0570**](/materials/material-no/1.0570 "Material no.: 1.0570") - [*Category* **Unalloyed structural steels · 452 grades**](/categories/unalloyed-structural-steels "Category: Unalloyed structural steels · 452 grades") - *Designations* **112** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=7e6fd798-a287-492d-8019-b9a1b4a09562&designation=eb976eb4-6c30-4c47-a087-f9e8a7c5e94a "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/chs17.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN S355J2 This grade’s own name · 3 grades on that route](/materials/din-en/s355j2 "DIN / EN S355J2") - [UNS K03011 This grade’s own name](/materials/uns/k03011 "UNS K03011") - [AISI / SAE 1024 This grade’s own name · 5 grades on that route](/materials/aisi-sae/1024 "AISI / SAE 1024") - [ASTM A350LF2 This grade’s own name · 3 grades on that route](/materials/astm/a350lf2 "ASTM A350LF2") ## 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 112 designations · 23 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 · 4 - [1.0570 Indicative](/materials/material-no/1.0570 "DIN / EN 1.0570") - [S355J2 This grade’s own name](/materials/din-en/s355j2 "DIN / EN S355J2") - [S355J2G3 This grade’s own name](/materials/din-en/s355j2g3 "DIN / EN S355J2G3")Formerly St 52-3 - [St 52-3 This grade’s own name Withdrawn](/materials/din-en/st52-3 "DIN / EN St 52-3")Superseded by[S355J2G3](/materials/din-en/s355j2g3 "S355J2G3") UNS United States · 4 - [K03011 This grade’s own name](/materials/uns/k03011 "UNS K03011") - [K03014 This grade’s own name](/materials/uns/k03014 "UNS K03014") - [K12037 This grade’s own name](/materials/uns/k12037 "UNS K12037") - [K12709 This grade’s own name](/materials/uns/k12709 "UNS K12709") AISI / SAE United States · 2 - [1024 This grade’s own name](/materials/aisi-sae/1024 "AISI / SAE 1024") - [Gr.50type1-4 Indicative](/materials/aisi-sae/gr-50type1-4 "AISI / SAE Gr.50type1-4") ASTM United States · 1 - [A350LF2 This grade’s own name](/materials/astm/a350lf2 "ASTM A350LF2") BS United Kingdom · 16 - [1449-50/35HR Indicative](/materials/bs/1449-50-35hr "BS 1449-50/35HR") - [1449-50/35HS Indicative](/materials/bs/1449-50-35hs "BS 1449-50/35HS") - [4360 50 B Indicative](/materials/bs/4360-50b "BS 4360 50 B") - [4360-50C Indicative](/materials/bs/4360-50c "BS 4360-50C") - [4360-50D Indicative](/materials/bs/4360-50d "BS 4360-50D") - [50C Indicative](/materials/bs/50c "BS 50C") - [50D Indicative](/materials/bs/50d "BS 50D") - [CEW5 Indicative](/materials/bs/cew5 "BS CEW5") - [D1FF Indicative](/materials/bs/d1ff "BS D1FF") - [ERW5 Indicative](/materials/bs/erw5 "BS ERW5") - [Fe510 Indicative](/materials/bs/fe510 "BS Fe510") - [Fe510D1FF Indicative](/materials/bs/fe510d1ff "BS Fe510D1FF") - [Gr 50D Indicative](/materials/bs/gr-50d "BS Gr 50D") - [S355J0 Indicative](/materials/uni/s355j0 "BS S355J0") - [S355J2G3 Indicative](/materials/din-en/s355j2g3 "BS S355J2G3") - [SAW5 Indicative](/materials/bs/saw5 "BS SAW5") AFNOR France · 5 - [E36-3 Indicative](/materials/afnor/e36-3 "AFNOR E36-3") - [E36-4 Indicative](/materials/afnor/e36-4 "AFNOR E36-4") - [S355J0 Indicative](/materials/uni/s355j0 "AFNOR S355J0") - [S355J2G3 Indicative](/materials/din-en/s355j2g3 "AFNOR S355J2G3") - [S355K2G3 Indicative](/materials/din-en/s355k2g3 "AFNOR S355K2G3") UNE Spain · 5 - [A510C Indicative](/materials/une/a510c "UNE A510C") - [AE355D Indicative](/materials/une/ae355d "UNE AE355D") - [Fe510D1FF Indicative](/materials/bs/fe510d1ff "UNE Fe510D1FF") - [S355J2G3 Indicative](/materials/din-en/s355j2g3 "UNE S355J2G3") - [S355J2G4 Indicative](/materials/din-en/s355j2g4 "UNE S355J2G4") JIS Japan · 14 - [SM490 Indicative](/materials/jis/sm490 "JIS SM490") - [SM490A Indicative](/materials/ks/sm490a "JIS SM490A") - [SM490B Indicative](/materials/ks/sm490b "JIS SM490B") - [SM490C Indicative](/materials/ks/sm490c "JIS SM490C") - [SM490YA Indicative](/materials/jis/sm490ya "JIS SM490YA") - [SM490YB Indicative](/materials/ks/sm490yb "JIS SM490YB") - [SM50A Indicative](/materials/jis/sm50a "JIS SM50A") - [SM520B Indicative](/materials/ks/sm520b "JIS SM520B") - [SM520C Indicative](/materials/jis/sm520c "JIS SM520C") - [SM53C Indicative](/materials/ks/sm53c "JIS SM53C") - [SS490C Indicative](/materials/jis/ss490c "JIS SS490C") - [STK490 Indicative](/materials/jis/stk490 "JIS STK490") - [STKM16C Indicative](/materials/jis/stkm16c "JIS STKM16C") - [STKR490 Indicative](/materials/jis/stkr490 "JIS STKR490") GB China · 6 - [16Mn Indicative](/materials/gb/16mn "GB 16Mn") - [16MnDR Indicative](/materials/gb/16mndr "GB 16MnDR") - [16Mng Indicative](/materials/gb/16mng "GB 16Mng") - [16MnL Indicative](/materials/gb/16mnl "GB 16MnL") - [16MnR Indicative](/materials/gb/16mnr "GB 16MnR") - [HP345 Indicative](/materials/gb/hp345 "GB HP345") GOST Russia / CIS · 11 - [17G1S Indicative](/materials/gost/17g1s "GOST 17G1S") - [17G1S-U Indicative](/materials/gost/17g1s-u "GOST 17G1S-U") - [17GS Indicative](/materials/bds/17gs "GOST 17GS") - [17GS-1 Indicative](/materials/gost/17gs-1 "GOST 17GS-1") - [17Г1С Indicative](/materials/gost/17g1s "GOST 17Г1С") - [17ГС Indicative](/materials/bds/17gs "GOST 17ГС") - [35 Indicative](/materials/gb/35 "GOST 35") - **CHS17 Indicative** - [S345 Indicative](/materials/gost/s345 "GOST S345") - [С345 Indicative](/materials/gost/s345 "GOST С345") - [ст.17ГС Indicative](/materials/gost/st-17gs "GOST ст.17ГС") UNI Italy · 11 - [Fe510 Indicative](/materials/bs/fe510 "UNI Fe510") - [Fe510B Indicative](/materials/uni/fe510b "UNI Fe510B") - [Fe510C Indicative](/materials/uni/fe510c "UNI Fe510C") - [Fe510CFN Indicative](/materials/uni/fe510cfn "UNI Fe510CFN") - [Fe510D Indicative](/materials/uni/fe510d "UNI Fe510D") - [Fe52BFN Indicative](/materials/uni/fe52bfn "UNI Fe52BFN") - [Fe52CFN Indicative](/materials/uni/fe52cfn "UNI Fe52CFN") - [FeE420 Indicative](/materials/uni/fee420 "UNI FeE420") - [S355J0 Indicative](/materials/uni/s355j0 "UNI S355J0") - [S355J2G3 Indicative](/materials/din-en/s355j2g3 "UNI S355J2G3") - [S355JR Indicative](/materials/din-en/s355jr "UNI S355JR") SS Sweden · 6 - [2132 Indicative](/materials/ss/2132 "SS 2132") - [2133 Indicative](/materials/ss/2133 "SS 2133") - [2134 Indicative](/materials/ss/2134 "SS 2134") - [2135-01 Indicative](/materials/ss/2135-01 "SS 2135-01") - [2172 Indicative](/materials/ss/2172 "SS 2172") - [2174 Indicative](/materials/ss/2174 "SS 2174") ČSN Czechia · 4 - [11438 Indicative](/materials/csn/11438 "ČSN 11438") - [11483 Indicative](/materials/csn/11483 "ČSN 11483") - [11503 Indicative](/materials/csn/11503 "ČSN 11503") - [11523 Indicative](/materials/csn/11523 "ČSN 11523") STN Slovakia · 1 - [11 503 Indicative](/materials/csn/11503 "STN 11 503") PN Poland · 7 - [15GA Indicative](/materials/pn/15ga "PN 15GA") - [16G2 Indicative](/materials/gost/16g2 "PN 16G2") - [18G2 Indicative](/materials/pn/18g2 "PN 18G2") - [18G2A Indicative](/materials/pn/18g2a "PN 18G2A") - [18G2AA Indicative](/materials/pn/18g2aa "PN 18G2AA") - [18G2ACu Indicative](/materials/pn/18g2acu "PN 18G2ACu") - [G355 Indicative](/materials/pn/g355 "PN G355") SRPS Serbia · 1 - [Č.0563 Indicative](/materials/srps/c-0563 "SRPS Č.0563") MSZ Hungary · 4 - [45D Indicative](/materials/msz/45d "MSZ 45D") - [B50.36 Indicative](/materials/msz/b50-36 "MSZ B50.36") - [Fe355C/FF Indicative](/materials/msz/fe355c-ff "MSZ Fe355C/FF") - [S355J2G3 Indicative](/materials/din-en/s355j2g3 "MSZ S355J2G3") STAS Romania · 2 - [OL52.3 Indicative](/materials/stas/ol52-3 "STAS OL52.3") - [OL52.4 Indicative](/materials/stas/ol52-4 "STAS OL52.4") BDS Bulgaria · 2 - [17GS Indicative](/materials/bds/17gs "BDS 17GS") - [S355J2G3 Indicative](/materials/din-en/s355j2g3 "BDS S355J2G3") SANS South Africa · 2 - [350 WDD Indicative](/materials/sans/350-wdd "SANS 350 WDD") - [350WD Indicative](/materials/sans/350wd "SANS 350WD") ÖNORM Austria · 2 - [St510D Indicative](/materials/onorm/st510d "ÖNORM St510D") - [St52F Indicative](/materials/onorm/st52f "ÖNORM St52F") NBN Belgium · 1 - [FE510D1FF Indicative](/materials/bs/fe510d1ff "NBN FE510D1FF") KS South Korea · 1 - [STKM16C Indicative](/materials/jis/stkm16c "KS STKM16C") 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 Si C Iron — the balance, never listed by a standard — 97.6 % Mn — 1.6 % Si — 0.6 % C — 0.2 % Traces & impurities · 0.1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.2 | | Si | ≤ 0.55 | | Mn | ≤ 1.6 | | P | 0.035 | | S | 0.035 | 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 | ≤0,20 | — | 0.200 | Max | | Si | ≤0,55 | — | 0.550 | Max | | P | 0,035 | 0.035 | 0.035 | Exact | | S | 0,035 | 0.035 | 0.035 | Exact | | Mn | ≤1,60 | — | 1.600 | 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: Ni, Cr, Mo. ## Physical & mechanical properties Density 7,85 g/cm³ Exact Transformation point Ac1 745 °C Exact Transformation point Ac3 870 °C Exact · Ac3(Acm) Transformation point Ar3 790 °C Exact · Ar3(Arcm) Transformation point Ar1 680 °C Exact Weldability readily weldable As published: without limitations. 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 · 29 values By thickness**Flat and long products** source `steelnumber` | Thickness mm | ReH N/mm² | Rm N/mm² | |---|---|---| | ≤ 3 | — | 510 – 680 | | 3 – 100 | — | 470 – 630 | | ≤ 16 | 355 | — | | 16 – 40 | 345 | — | | 40 – 63 | 335 | — | | 63 – 80 | 325 | — | | 80 – 100 | 315 | — | | 100 – 150 | 295 | 450 – 600 | | 150 – 250 | — | 450 – 600 | | 150 – 200 | 285 | — | | 200 – 250 | 275 | — | | 250 – 400 | — | 450 – 600 | By thickness**no delivery state stated** source `steelnumber` | Thickness mm | A80% · Lo = 80 mm | A% · Lo = 5,65 √So | |---|---|---| | ≤ 1 | 14 | — | | 1 – 1.5 | 15 | — | | 1.5 – 2 | 16 | — | | 2 – 2.5 | 17 | — | | 2.5 – 3 | 18 | — | | 3 – 40 | — | 22 | | 40 – 63 | — | 21 | | 63 – 100 | — | 20 | | 100 – 150 | — | 18 | | 150 – 250 | — | 17 | By delivery state**no delivery state stated** source `splav` | Delivery state | Rm N/mm² | Re N/mm² | A5% | |---|---|---|---| | Sheet, GOST 5520-79 | 490 – 510 | 335 – 345 | 23 | | Pipe, GOST 10705-80 | 490 | 343 | 20 | 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. [S355JR 1.0045 Mn ≤1,60 · Si ≤0,55 - ΔMn 0.00 - ΔSi 0.00 - 32 designations](/materials/din-en/s355jr "S355JR")[S320GP 1.0046 Mn ≤1,60 · Si ≤0,55 - ΔMn 0.00 - ΔSi 0.00 - 3 designations](/materials/din-en/s320gp "S320GP")[S355GP 1.0083 Mn ≤1,60 · Si ≤0,55 - ΔMn 0.00 - ΔSi 0.00 - 5 designations](/materials/din-en/s355gp "S355GP")[P235G1T1 1.0253 Mn ≤1,60 · Si ≤0,55 - ΔMn 0.00 - ΔSi 0.00 - 3 designations](/materials/din-en/p235g1t1 "P235G1T1")[P275T1 1.0256 Mn ≤1,60 · Si ≤0,55 - ΔMn 0.00 - ΔSi 0.00 - 7 designations](/materials/din-en/p275t1 "P275T1")[E370 1.0261 Mn ≤1,60 · Si ≤0,55 - ΔMn 0.00 - ΔSi 0.00 - 2 designations](/materials/din-en/e370 "E370") ## 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=7e6fd798-a287-492d-8019-b9a1b4a09562&designation=eb976eb4-6c30-4c47-a087-f9e8a7c5e94a "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/chs17.pdf "Datasheet as PDF")