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DNV A420 steel plate,NV A420 ship plate,NV A420 shipbuilding plate
Source:Xin Steel Industry   Date:2014/03/17

DNV A420 steel plate is one steel grade of extra high strength shipbuilding plate which is mainly used for built hull of vessels,ship body construction.Normally when rolling of steel plate NV Grade A420,heat treatment shall be Quenching and Tempering to improve steel strength in yield and tensile points.The Charpy V impacting test shall be adopted under 0 centigrade.


Getting more information about DNV A420 high strength ship plate, Contact Xinsteel Now.


Generally before using these ship plates,steel plate pretreatment is necessary.Pre-treatment including shot blasting and painting with shop primer.Some shipyards have its own shot blasting and painting lines,and others have non.Xinsteel set up two pre-treatment lines for shipbuilding steel plate seperately in Shanghai and Tianjin port city for giving customers' one-stop services.

 

 

Chemical composition of Heat analysis for Shipbuilding steel plate NV A420 (Max %):

 

C

Si

Mn

P

S

Al

N

0.21

0.10-0.55

1.7

0.035

0.035

0.015-0.08

0.02

Ni

V

Ti

Cu

B

Nb

Mo

 

0.04-0.10

0.02

 

0.005

0.02-0.05

 

 

 

 

 

 

 

 Mechanical properties for Shipbuilding steel plate DNV A420:

 

Yield strength (Mpa)

Tensile strength (Mpa)

Steel Mark

420

530-680

NV A420