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DNV EH40

DNV EH40    DNV EH40

DNV EH40 shipbuilding  steel  plate  and  sheet

DNV EH40 Steel Description:
The steel for shipbuilding and oil platform---EH40, is the high tensile strength steel.
DNV EH40 is the Hull structural steel,with it's good toughness properties, higher strength,strong corrosion-resistance,the processing properties,and welding properties.DNV EH40 steel can be used in the manufacture of the ocean ship's hull structure whose weight is above 10000 tons.
DNV EH40 Steel Application :
DNV EH40 is mainly used to manufacture  the ship hull structure of ocean, coastal and inland sea areas , shipyards, oil platforms, pipelines in the ocean, coastal power plants, port facilities and other structural parts.

DNV EH40 Steel chemical composition by [%]:

Grade

C max

Si max

Mn

P max

S max

Als min

Ti max

Cu max

Cr max

Ni max

Mo max

Nb

V

DNV EH40

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.

DNV EH40 Steel Mechanical properties:

Grade

Rm (MPa)

Re(MPa) min

A% min

Akv/J min

DNV EH40

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.

DNV EH40 Steel  Delivery state:

Grade

Fine grains elements

category

The thickness of steel

≤ 12

>12.5-20

>20-25

>25-35

>35-50

>50-100

DNV EH40

any

Plate/
sheet

N(50),CR(50),TM(50)

-

Profile steel

Note: 1. 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.

Shipbuilding steel,generally speaking,a hull structure steel , is to manufacture hull as the requirements of  register of shipping. Shipbuilding steel includes four grades,that is A,B,C,D. Grade A means impact test at 20°C; Grade B is impact test at 0°C; Grade C means impact test at -20°C; Grade D is impact test at -40°C. With  excellent  welding performance,so a  variety of welding method can be used for welding . DNV EH40 has little alloy elements and grain refinement elements added, so its weldability is good.

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