NV D620 and DNV Grade D620 steel plate Supplier

Gangsteel supply NV D620 and DNV Grade D620 steel plate. We are NV D620 Extra high strength steel plates and DNV Grade D620 certification supplier.

Related Words: NV D620, DNV Grade D620

Adopt standard: DNV Extra high strength steel plate
DNV Extra High Grade:

NV D620 steel grade.

NV D620 is applied to extra high strength steels, which is defined as steel with specified min yield stress of 420Mpa. The max yield is 690Mpa in NV A690.

NV D620 steel grade shall be killed and find grain treated. Steel grade of strength levels up to and including 500Mpa should be supplied in Normalized, TM or QT condition. Steel grade of strength levels above 500Mpa shall be supplied in TM or QT delivery condition.

Gangsteel is specialized in Super thickness steel grade. We have much experience in manufacture and exporting extra high strength steel grade.


NV D620 and DNV Grade D620 steel plate Chemical composition heat analysis

Element NV D620  Max % Element NV D620  max %
C 0.20 Ni 0.40
Mn 1.70 Mo 0.08
Si  0.10-0.55    Al   0.020 min
S 0.030    Nb 0.20-0.05
P 0.030 V 0.05-0.10
Cu 0.35 Ti 0.0007-0.05
    Cr 0.20 N  

NV D620 and DNV Grade D620 steel plate Mechanical properties,   

Grade Thickness Yield Strength Tensile Strength Elongation Impact Energy
(mm) MPa (min) MPa % (min) (KV J) (min)
        -20 degree
NV D620 8-260 620 720-890 15 41J

Note: the impact energy under less 150mm thickness

If you have any need in NV D620 and DNV Grade D620 steel plate, please feel free to contact us soon to get a competitive price. �5֒�1

NV D620 and DNV Grade D620 steel plate Supplier
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