Q390D steel plate
Q390D steel plate
GB/T1591 Q390 contains five different steel grades as Q390A,Q390B,Q390C,Q390D and Q390E.Structural steel Q390D shall be done impacting test at low temperature minus 20 degree centigrade.Normalised heat treatment suggested to be done for low alloy steel plate Q390D in heavy thickness.
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- Commodity name: Q390D steel plate
GB/T1591 Q390 contains five different steel grades as Q390A,Q390B,Q390C,Q390D and Q390E.Structural steel Q390D shall be done impacting test at low temperature minus 20 degree centigrade.Normalised heat treatment suggested to be done for low alloy steel plate Q390D in heavy thickness.
Chemical Composition
Main chemical elements composition of Q390D C Si Mn P S V Nb Ti Al (min.) Cr Ni 0.20 0.55 1.00-1.60 0.030 0.030 0.02-0.20 0.015-0.060 0.02-0.20 0.015 0.30 0.70 Mechanical Property
Thickness (mm) Q390D ≤ 16 > 16 ≤ 35 > 35 ≤ 50 >50 Yield strength (≥Mpa) 390 370 350 330 Tensile strength (Mpa) 490-650 Key words:- Q390D steel plate
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