Q390D is extensively used in a variety of industries.
Q390D is widely used in structural applications, including bridges, buildings and construction equipment and more.
Thickness: 6-400 mm
Width: 1600-4200 mm
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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.
Technical Requirements & Additional Services:
♦ Low temperature impacting test
♦ Cutting and welding as per end user’s demands
♦ More striction on some chemical elements contains
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Ultrasonic test under GB/T2970,JB4730,EN 10160,ASTM A435,A577,A578
Mechnical property for Q390D low alloy structural steel:
Chemical composition for Q390D low alloy structural steel (Heat Analysis Max%)
||> 16 ≤ 35
||> 35 ≤ 50
|Yield strength (≥Mpa)
|Tensile strength (Mpa)
| Main chemical elements composition of Q390D
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