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What is the difference between Q235B steel rails and 55Q steel rails
Q235B steel rails and 55Q steel rails are named according to the material of the rail. The biggest difference between the two is the material. Q235B steel rails is cheaper in price.
Chemical composition of 55Q steel rails: C: 0.59 Si: 0.25 Mn: 0.74 P: 0.012 S: 0.019 Cu: 0.01
Chemical composition of Q235B steel rails: C: 0.12-0.20 Si: ≤ 0.30 Mn: 0.30-0.70 S ≤ 0.045 P: ≤ 0.045 Cr: ≤ 0.30 Ni: ≤ 0.30 Cu: ≤ 0.30
