Material of B480GNQR Weathering steel plate/sheet -
B480GNQR steel standards Q/BQB 340. B480GNQR weathering steel alloy components and weight percentage contents C:0.12 ~ 0.21, Si:0.2 ~ 2.0, Mn:0.7 ~ 2.0, s is less than or equal to 0.036, P < 0.034, Cu:0.10 ~ 0.40, Al<0.2, for the rest of the Fe and trace impurities. Through the Cu, Mn, Si, Al and other alloying, and simple adjustment of ordinary low carbon steel (Q235 steel) part of the structural b480gnqr weather steel corten plate
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