Structural Steels

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Structural Steels are used in many applications, combining good welding properties with guaranteed strengths. There are many grades and the uses varied including civil and industrial engineering. High strength low alloys have replaced many structural steels where weight reduction is important (e.g. automotive) but with guaranteed strengths.

Traditional Structural SteelsEuronorm EN10025 S185 S235 S235JR S235JO S235J2G3 S275 S275JR S275JO St44-2 St44-3 U St37-2 St37-3 U St37-3 N Germany Din 17100 St33 40A 40B 40C 40D 43A 43B 43C 50A 50B St52-3 U St 52-3 N 50C 50D A283D-A A578Gr70 A572Gr50 A441 E28-3 UK BS4360 USA ASTM A283B A283C A283C-A E 24-2 E24-4 France NFA 35-501 A33 0.22max 0.17max 0.17max 0.17max 0.25max 0.21max 0.18max 0.23max 0.23max 0.22max 0.20max 0.20max Germany SEW 092 QSTE340TM QSTE380TM QSTE420TM QSTE460TM QSTE420TM QSTE460TM QSTE500TM QSTE550TM UK BS1449 40/30 43/35 46/40 50/45 40F30 40F35 46F40 045XLF 050XLF 060XLF Gr65 070XLK USA France NFA 36-231 E315D E355D E420D E315D E355D E420D %C 0.12max 0.12max 0.12max 0.12max 0.12max 0.12max 0.12max 0.12max 0.12max 0.12max 0.12max %Mn 1.30max 1.50max 1.60max 1.60max 1.30max 1.50max 1.50max 1.60max 1.60max 1.70max 1.80max %Si 0.50max 0.50max 0.50max 0.50max 0.50max 0.50max 0.50max 0.50max 0.50max 0.50max 0.50max %S 0.020max 0.020max 0.015max 0.015max 0.015max 0.015max 0.015max 0.015max 0.015max 0.015max 0.015max %P 0.025max 0.025max 0.025max 0.025max 0.025max 0.025max 0.025max 0.025max 0.025max 0.025max 0.025max Yield min 315 355 420 460 315 355 355 420 460 500 550 550/700 600/760 T ensile 390/510 430/550 480/620 520/670 V 0.20max 0.20max 0.20max 0.20max 0.20max 0.20max 0.20max 0.20max 0.20max 0.20max 0.20max 1.60 max 1.40max 1.40max 1.40max 1.60 max 1.50max 1.50max 1.60max 1.60max 1.60 max 1.60max 1.60max 0.50 max 0.50 max 0.50max 0.55max 0.60 max 0.55max 0.55max .050 max 0.045 0.040 0.035 .050 max 0.045max 0.040max 0.050max 0.045max 0.40 max 0.035max 0.035max .050 max 0.045 0.040 0.035 .050 max 0.045max 0.040max 0.050max 0.045max 0.040 max 0.035max 0.035max 185 235 235 235 275 275 275 355 355 355 355 355 310/540 360/510 360/510 360/510 430/580 430/580 430/580 490/630 490/630 490/630 490/630 490/630 %C %Mn %Si %S %P Yield min T ensile

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S355 S355JR S355JO S355J2G3 S355J2G4 Euronorm EN 10149-2 S315MC S355MC S420MC S460MC S315MC S355MC S420MC S460MC S500MC S550MC

High Strength Low Alloy Steels

E490D

080XLK Links to Branded High strength Low Alloy grades:Docol SSAB of Sweden

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Tenform from Corus

Comparison of BS EN 10025 and BS 4360 Mechanical PropertiesBS EN 10025: 1993Impact Energy (JC) Nominal Thickness T ensile Min Yield Strength at 16mm N/mm 150mm 3mm N/mm Min Yield Strength at 16mm N/mm Max Thk for Specified Yield N/mm (2)