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DNV A420

DNV A420

 

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

 

DNV A420 steel grade.

 

DNV A420 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.

 

DNV A420 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 DNV A420 steel grade, please refer to the following:

DNV A420 Chemical composition heat analysis

Element

NV A420  Max %

Element

NV A420  max %

C

0.21

Ni

0.40

Mn

1.70

Mo

0.08

Si

 0.10-0.55

   Al

  0.020 min

S

0.035

   Nb

0.20-0.05

P

0.035

V

0.05-0.10

Cu

0.35

Ti

0.0007-0.05

    Cr

0.20

N

 

           

DNV A420 Mechanical properties,            longitudinal min impact energy

Grade

Thickness

Yield Strength

Tensile Strength

Elongation

Impact Energy

(mm)

MPa (min)

MPa

% (min)

(KV J) (min)

 

 

 

 

0 degree

DNV A420

8-260

420

530-680

18

28J

Note: the impact energy under less 150mm thickness

 

If you have any need in DNV A420 steel plate,please feel free to contact us soon to get a competitive price.