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High strength low alloy steel plate A572 Grade 50 and steel plate Q355B
Source:Xin Steel Industry Date:2021/06/21
High strength low alloy steel plate A572 Grade 50 and steel plate Q355B are widely used for riveted or bolted construction of briges,machine parts,structural constructions.Steel plate A572 Grade 50 comes from specification A572/A572M which also includes A572 Grade 60 steel plate,A572 Grade 42 steel plate and A572 Grade 65 steel plate.Steel plate Q355B comes from chinese specification GB/T 1591-2018 high strength low alloy structural steels.In former GB/T 1591,Q355B steel plate named as Q345B steel plate.According to impacting test temperature difference,Q355 steels includes Q355B steel plate,Q355C steel plate,Q355D steel plate and Q355E steel plate.
Xinsteel Industrial also stock High strength low alloy A572 Grade 50 angle bar,A572 Grade 50 steel pipe,Q355B angle bar,Q355B square hollow section and Q355B rectangular tubes.
As for chemical composition and mechanical properties for steel plate A572 Grade 50 and steel plate Q355B,you can check from the below table:
Q355B vs A572 Grade 50 Chemical composition: Heat Analysis Max% Standard Grade C Mn P S Si N Cu Cr Ni GB/T 1591 Q355B 0.24 1.60 0.035 0.035 0.55 0.012 0.40 0.30 0.30 A572/A572M A572 Grade 50 0.23 1.35 0.04 0.05 0.40 - - - - Mechanical Properties: Thickness Yield strength Tensile strength Mpa Min. Mpa GB/T 1591 Q355B T≤16 355 470-630 A572/A572M A572 Grade 50 T≤16 345 450 Min.