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What is the difference between ST52-3 steel plate and Q345B steel plate

What is the difference between ST52-3 steel plate and Q345B steel plate
Feb 18, 2020

The difference between ST52-3 steel plate and Q345B steel plate in chemical composition:

Grade C Si Mn P S Nb V Ti Cr Ni Cu N Mo B Als
ST52-3 0.22 - - 0.040 0.040 - - - - - - - - - -
Q345B 0.2 0.5 1.7 0.030 0.030 0.07 0.15 0.2 0.3 0.5 0.3 0.012 0.1 - -

The difference between ST52-3 steel plate and Q345B steel plate in mechanical properties:

Grade Yield Strength Tensile Strength Elongation
(Mpa) (MPa) (%)
ST52-3 335 490-630 19
Q345B 325 470-630 19
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