--- title: "Fe540 — S355 J 0, 12 equivalent designations" description: "Fe540 in UNI: material number 1.0507, also listed as S355 J 0. It is a material in the category Others. 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Compare it to detect a real > content change; `generated` moves on every render and is not a change signal. UNI · Italy · 12 designations # Fe540 Fe540 is a designation in UNI for the material held under material number 1.0507, also listed as S355 J 0. It is a material in the category Others. We list 12 designations recorded for this grade, in the standards DIN / EN, AISI / SAE, BS, JIS, GOST, UNI, ČSN, PN and SANS. - [*Material no.* **1.0507**](/materials/material-no/1.0507 "Material no.: 1.0507") - [*Category* **Others · 1754 grades**](/categories/others "Category: Others · 1754 grades") - *Designations* **12** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=9fa0e84a-91f3-4b98-a4d2-c952bde28aaf&designation=ec052ac0-6632-4de5-9bad-1a7f82c6f26e "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/uni/fe540.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN S355 J 0 This grade’s own name](/materials/uni/s355j0 "DIN / EN S355 J 0") ## About Others These are miscellaneous metallic alloys that do not fit a more specific material family and may be based on iron, nickel, cobalt, copper or other alloy systems. They are selected for applications requiring particular combinations of strength, hardness, toughness, wear resistance or resistance to demanding service conditions. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 12 designations · 9 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 Withdrawn designation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.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 - [S355 J 0 This grade’s own name](/materials/uni/s355j0 "DIN / EN S355 J 0") - [S355J0Cu This grade’s own name](/materials/din-en/s355j0cu "DIN / EN S355J0Cu") AISI / SAE United States · 1 - [A570-50 Indicative](/materials/aisi-sae/a570-50 "AISI / SAE A570-50") BS United Kingdom · 2 - [CDS7 Indicative](/materials/bs/cds7 "BS CDS7") - [Gr 50C Indicative](/materials/bs/gr-50c "BS Gr 50C") JIS Japan · 1 - [STKM16A Indicative](/materials/jis/stkm16a "JIS STKM16A") GOST Russia / CIS · 2 - [VSt5ps Indicative](/materials/gost/vst5ps "GOST VSt5ps") - [ВСт5пс Indicative](/materials/gost/vst5ps "GOST ВСт5пс") UNI Italy · 1 - **Fe540 Indicative** ČSN Czechia · 1 - [11550 Indicative](/materials/csn/11550 "ČSN 11550") PN Poland · 1 - [R55 Indicative](/materials/pn/r55 "PN R55") SANS South Africa · 1 - [350 WC Indicative](/materials/sans/350-wc "SANS 350 WC") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 7 elements on file · weight % What this alloy is Fe Mn Si Cu Iron — the balance, never listed by a standard — 97.2 % Mn — 1.6 % Si — 0.6 % Cu — 0.3 % Traces & impurities · 0.3 % 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 | 0.04 | | S | 0.04 | | Cu | 0.25–0.4 | | N | 0.009 | Carbon Silicon Manganese Phosphorus Sulfur Copper 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 | ≤0,20 | — | 0.200 | Max | | N | 0,009 | 0.009 | 0.009 | Exact | | Si | ≤0,55 | — | 0.550 | Max | | P | 0,04 | 0.040 | 0.040 | Exact | | S | 0,04 | 0.040 | 0.040 | Exact | | Mn | ≤1,60 | — | 1.600 | Max | | Cu | 0,25-0,40 | 0.250 | 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: Ni, Cr, Mo. ## Physical & mechanical properties Density 7,85 g/cm³ Exact Transformation point Ac1 730 °C Exact Transformation point Ac3 825 °C Exact · Ac3(Acm) Transformation point Ar3 815 °C Exact · Ar3(Arcm) Transformation point Ar1 690 °C Exact Weldability weldable with restrictions As published: limited weldability. 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 · 37 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 | — | 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 dimension**As-delivered state** source `splav` | Dimension mm | Rm N/mm² | Re N/mm² | A5% | |---|---|---|---| | to 20 | 490 – 630 | 285 | 20 | | 20 - 40 | 490 – 630 | 275 | 19 | | 40 - 100 | 490 – 630 | 265 | 17 | At temperature**no delivery state stated** source `splav` | Temperature °C | Density g/cm³ | Elastic modulus GPa | |---|---|---| | 20 | 7.85 | 198 | | 100 | — | 196 | | 200 | — | 186 | | 300 | — | 175 | | 400 | — | 167 | 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 / Cu 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. [S355K2G4Cu 1.0519 Mn ≤1,60 · Cu 0,25-0,40 - ΔMn 0.00 - ΔCu 0.00 - 1 designations](/materials/din-en/s355k2g4cu "S355K2G4Cu")[S355J2 1.0585 Mn ≤1,60 · Cu 0,25-0,40 - ΔMn 0.00 - ΔCu 0.00 - 4 designations](/materials/din-en/s355j2 "S355J2")[S355J2G3CuC 1.0587 Mn ≤1,60 · Cu 0,25-0,40 - ΔMn 0.00 - ΔCu 0.00 - 2 designations](/materials/din-en/s355j2g3cuc "S355J2G3CuC")[S355J2G3Cu 1.0585 Mn ≤1,60 · Cu 0,25-0,35 - ΔMn 0.00 - ΔCu 0.03 - 3 designations](/materials/din-en/s355j2g3cu "S355J2G3Cu")[P215NL 1.0451 Mn 0,40-1,20 · Cu ≤0,30 - ΔMn 0.00 - ΔCu 0.18 - 1 designations](/materials/din-en/p215nl "P215NL")[P255QL 1.0452 Mn 0,40-1,20 · Cu ≤0,30 - ΔMn 0.00 - ΔCu 0.18 - 1 designations](/materials/din-en/p255ql "P255QL") ## 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=9fa0e84a-91f3-4b98-a4d2-c952bde28aaf&designation=ec052ac0-6632-4de5-9bad-1a7f82c6f26e "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/uni/fe540.pdf "Datasheet as PDF")