Gangsteel is specialized in supplying DNV extra high strength steel plate in DNV Grade D420. For more information of Grade D420 steel plate, please check them in following:

 

 

NV D420 extra high Strength Chemical Composition

Grade

The Element Max (%)

C

Si

Mn

P

S

Al

N

NV D420

0.20

0.10-0.55

1.7

0.030

0.030

0.015-0.08

0.020

Nb

V

Ti

Cu

B

Ni

Mo

0.02-0.05

0.04-0.10

0.02

 

0.005

 

 

Crack Sensitivity:  Pcm = (C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/10+5B)%
Carbon Equivalent:  Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%

 

 

 

 

NV D420 extra high general strength property

Grade

 

Mechanical Property

Charpy V Impact Test

Thickness

Yield

Tensile

Elongation

Degree

Energy 1

Energy 2

NV D420

mm

Min Mpa

Mpa

Min  %

-20

J

J

t≤50

420

530-680

18%

28

42

50<t≤70

420

530-680

18%

28

42

70<t≤150

420

530-680

18%

28

42

Note: Energy 1 is transverse impact test, Energy 2 is longitudinal

 

Boiler steel plates| Alloy steel plates| High strength plate| Carbon steel plate| Stainless steel plate

 

 

 

Equivalent steel grade of NV D420

ABS

GL

LR

BV

CCS

NK

KR

RINA

AB/DQ43

GL-D420

LR/DH42

BV/D420

CCS/D420

K D43

R D43

RI/D420

 

Other steel grade NV A32,NV D36, NV E40

If you need more stock steel plates in shipbuilding steel plate, please click warehouse sizes.

 

DNV Steel Plate Grade Supplier

General Strength

NV A

NV B

NV D

NV E

High Strength

NV A32

NV D32

NV E32

NV F32

NV A36

NV D36

NV E36

NV F36

NV A40

NV D40

NV E40

NV F40

Extra Strength

NV A420

NV D420

NV E420

NV F420

NV A460

NV D460

NV E460

NV F460

NV A500

NV D500

NV E500

NV F500

NV A550

NV D550

NV E550

NV F550

NV A620

NV D620

NV E620

NV F620

NV A690

NV D690

NV E690

NV F690

 

 

 

 

 

Other Products