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DNV D420,NV D420,D420 steel grade, DNV Grade D420,D420 steel plate

 

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

 

NV D420 steel grade.

 

NV D420 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 D420 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 D420 steel grade, please refer to the following:

NV D420 Chemical composition heat analysis

Element

NV D420  Max %

Element

NV D420  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 D420 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 D420

8-260

420

530-680

18

28J

Note: the impact energy under less 150mm thickness

 

If you have any need in NV D420 steel plate, please feel free to contact us soon to get a competitive price.

 

DNV D420,NV D420,D420 steel grade, DNV Grade D420, D420 steel plate