DNV D620 is applied to extra high strength steels, which is defined as steel with specified min yield stress of 420Mpa. The max yield is 690Mpa.
Our mill could produce size in the following:
Thickness: 6mm to 240mm,
Width: 1500mm to 4020mm
Length: 3000mm to 27000mm.
DNV GRADE D620 Chemical composition heat analysis:
|
NV D620 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 D620 |
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 D620 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 |
|
|
NV D620 |
mm |
Min Mpa |
Mpa |
Min % |
-20 |
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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Stainless steel | carbon steel | fine-grain carbon steel | shipbuilding steel | low alloy steel steel pipe
Katalor steel can supply DNV grade D620 steel specification and price ,we are DNV D620 steel suppliers and manufacturer ,if you need DNV D620 steel exporter ,please contact us.
