NV D550 and DNV Grade D550 steel plate Supplier

Gangsteel supply NV D550 and DNV Grade D550 steel plate. We are NV D550 Extra high strength steel plates and DNV Grade D550 certification supplier.

Related Words: NV D550, DNV Grade D550

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

NV D550 steel grade.

NV D550 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 D550 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 D550 and DNV Grade D550 steel plate Chemical composition heat analysis

Element NV D550  Max % Element NV D550  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 D550 and DNV Grade D550 steel plate Mechanical properties,         

Grade Thickness Yield Strength Tensile Strength Elongation Impact Energy
(mm) MPa (min) MPa % (min) (KV J) (min)
        -20 degree
NV D550 8-260 550 670-830 16 37J

Note: the impact energy under less 150mm thickness

If you have any need in NV D550 and DNV Grade D550 steel plate, please feel free to contact us soon to get a competitive price.

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NV D550 and DNV Grade D550 steel plate Supplier
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