Q500C, Q500D, Q500E steel plates - low alloy high strength structural steel

Q500 steel plate grade introduction:
Q500 steel plate belongs to low alloy high strength structural steel. It mainly has three grades: C, D and E, which are divided into Q500C, Q500D and Q500E.

Q500 steel plate material standard: GB/T 1591.
Corresponding foreign steel grade:
ISO： HS490-D
DIN: S500MC (1.0984)
American Standard ASTM: Grade D
French standard NF: S500MC

Chemical composition of Q500 steel plate:
C: ≤0.18, Mn: ≤1.80, Si: ≤0.60
P: ≤0.030, S: ≤0.030, Nb: ≤0.11
V: ≤0.12, Ti: ≤0.20, Cr: ≤0.60
Ni: ≤0.80, Cu: ≤0.55, N: ≤0.015
Mo: ≤0.20, B: ≤0.004, Al: ≤0.015