DNV E620 is applied to extra high strength steels, which is defined as steel with specified min yield stress of 420Mpa. The max yield is 690Mpa.
DNV E620 extra high Strength Chemical Composition
|
DNV E620 extra high Strength Chemical Composition |
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|
Grade |
The Element Max (%) |
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|
C |
Si |
Mn |
P |
S |
Al |
N |
|
|
NV E620 |
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 |
|
|
|
DNV E620 extra high general strength property
|
DNV E620 extra high general strength property |
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|
Grade |
|
Mechanical Property |
Charpy V Impact Test |
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|
Thickness |
Yield |
Tensile |
Elongation |
Degree |
Energy 1 |
Energy 2 |
|
|
DNV E620 |
mm |
Min Mpa |
Mpa |
Min % |
-40 |
J |
J |
|
t≤50 |
620 |
720-890 |
15% |
41 |
62 |
||
|
50＜t≤70 |
620 |
720-890 |
15% |
41 |
62 |
||
|
70＜t≤150 |
620 |
720-890 |
15% |
41 |
62 |
||
|
Note: Energy 1 is transverse impact test, Energy 2 is longitudinal |
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Application
DNV Grade E620 Shipbuilding steel plate is mainly used to Shipbuilding Project and Ocean Offshore Structural Project.
Other Name
DNV Grade E620 Shipbuilding steel plate,
DNV Grade E620 Ship Steel plate ,
DNV Grade E620 Marine Steel plate ,
DNV Grade E620 Steel Plate .
