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DNV D550 Marine steel,DNV Grade D550 shipbuilding steel,NV D550 steel plate
Source:Xin Steel Industry   Date:2014/03/21

Marine steel plate DNV D550 have to be done low temperature impacting test under minus 40 centigree and done Quenched and tempered heat treatment for any thickness.Else,our engineers suggest our end users to choose Z-test for ship steel plate DNV D550 to improved the strength in thickness direction.


Getting more information about DNV D550 high strength ship plate, Contact Xinsteel Now.


In China stated owned steel mills,just Xinsteel can roll DNV Grade D550 shipbuilding steel plate with thickness above 100 millmeters.We can roll this steel grade DNV D550 reach to 350 millimeters.The chemical composition and mechnical property for DNV D550 thickness above 100 millimeter is according to the steel plate witht thickness equal to 100 millimeters.

 

Chemical composition of Heat analysis for Shipbuilding steel plate NV D550 (Max %):

 

C

Si

Mn

P

S

Al

N

0.20

0.10-0.55

1.7

0.030

0.030

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 D550:

 

Yield strength (Mpa)

Tensile strength (Mpa)

Steel Mark

550

670-830

NV D550