Q390D steel plateGB/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.
Mechnical property for Q390D low alloy structural steel:
|Q390D||≤ 16||> 16 ≤ 35||> 35 ≤ 50||>50|
|Yield strength (≥Mpa)||390||370||350||330|
|Tensile strength (Mpa)||490-650|
|Main chemical elements composition of Q390D|
If you need a quotation, please send us your detailed requirements and we will reply to you within 24 hours.