CCS DH40 Marine Steel Plate
DH40 steel plate is a kind of marine steel plate with good mechanical properties. At the same time, DH40 steel plate has high strength, through its own heat treatment process, and then small compression ratio, the appropriate process and the best ratio of internal alloying elements, can be in the case of small compression ratio has good mechanical properties.
DH40 shipbuilding steel plate chemical composition
Grade |
C max |
Si max |
Mn |
P max |
S max |
Als min |
Ti max |
Cu max |
Cr |
Ni |
Mo |
Nb |
V |
|
DH40 |
0.18 |
0.50 |
0.90-1.60 |
0.035 |
0.035 |
0.015 |
0.02 |
0.35 |
0.20 |
0.40 |
0.08 |
0.02-0.05 |
0.05-0.10 |
Note: Generally speaking CE will be ≤ 0.40%. If the delivery condition is TMPC, the CE will be : ≤ 0.40% (thickness ≤ 50mm). Ceq% =(C+Mn)/6+(Cr+Mo+V)/5+(Ni+Cu)/15.
DH40 steel plates for shipbuilding mechanical property
Grade |
Rm |
Re(MPa) min |
A% min |
Akv/J min |
||||||
|
DH40 |
510-660 |
390 |
20 |
E.T °C |
Thickness (mm) |
|||||
|
0 |
≤ 50 |
>50-70 |
>70-100 |
|||||||
|
L |
C |
L |
C |
L |
C |
|||||
|
41 |
27 |
- |
||||||||
Note: In the list , Rm: tensile strength,Re: Yield strength,A%: elongation, E.T: experimental temperature,L: lengthways, C: crosswise.
DH40 marine steel plate condition of delivery
Grade |
Fine grains elements |
category |
The thickness of steel |
|||||
|
≤ 12 |
>12.5-20 |
>20-25 |
>25-35 |
>35-50 |
>50-100 |
|||
|
DH40 |
any |
Plate/ |
N(50),CR(50),TM(50) |
- |
||||
|
Profile steel |
||||||||
Note: 1. DH40 Shipbuilding steel delivery condition: A =Any ; N=Normalized ; CR=Control Rolled ; TM=TMPC, Temperature - deformation control rolling; AR*= Can be hot rolled with the agreement of Classification Society ; CR*=Can be control rolled with the agreement of Classification Society .
2. The Figure in the ( ) means the sampling volume to do the impact test, the unit is Ton.(-) means without impact test.
DH40 shipbuilding plate applications
DH40 shipbuilding plates is a kind of ship plate with high performance, high strength and good corrosion resistance, which is widely used in shipbuilding and other marine engineering fields.DH40 ship building steel plate is high strength high strength hull structural steel. Shipbuilding steel is generally referred to as hull structural steel, which refers to the production of steel used to make hull structure according to the requirements of the Classification Society production specifications.
DH40 ship steel plate product image

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