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DNV D550,NV D550,D550 steel grade, DNV Grade D550,D550 steel plate

 

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.

For more information in NV D550 steel grade, please refer to the following:

NV D550 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 Mechanical properties,            longitudinal min impact energy

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 steel plate, please feel free to contact us soon to get a competitive price.

 

DNV D550,NV D550,D550 steel grade, DNV Grade D550, D550 steel plate