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Low-alloy steel is relative to carbon steel. On the basis of carbon steel, in order to improve the performance of steel, it is intended to add one or several alloy elements to the steel. When the amount of alloy added exceeds the general content of carbon steel in the normal production method, the steel is called alloy steel.
1)Supply Form & Size
Form of Supply | Size(mm) | Length(mm) |
Round bar | 6.0mm-1200mm | 2.5m-10m |
2)Chemical Composition&Related Specifications
Grade | C | Si | Mn | P | S | Cu |
S355J2 (1.0577) | ≤0.24 | ≤0.6 | ≤1.70 | ≤0.035 | ≤0.035 | ≤0.6 |
3)Brand comparison table
AISI/SAE | DIN/EN | BS | JIS/KS | China |
Grade 50(345) | S355J2(1.0577) | S355J2(1.0577) | SCM421 | Q355D |
4)Mechanical Property
tensile strength σb (MPa) | 450—680 |
yield strengthσs (MPa) | ≤16mm:≥355;16—40:≥345;40—63:≥335;63—80:≥325;80—100:≥315;100—150:295;150—200:≥285;200—250:≥275;250—400:≥265 |
Impact energy Akv (J) | -20℃:≥27. |