The steel for shipbuilding and oil platform---DH40 shipbuilding steel, is the high tensile strength steel.
It is the Hull structural steel,with it's good toughness properties, higher strength,strong corrosion-resistance,the processing properties,and welding properties.This kind of steel can be used in the manufacture of the ocean ship's hull structure whose weight is above 10000 tons.
DH40 steel Chemical Composition
| Grade | C max | Si max | Mn | P max | S max | Als min | Ti max | Cu max | Cr max |
Ni max |
Mo max |
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 Mechanical Property
| Grade | Rm (MPa) |
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 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/ sheet |
N(50),CR(50),TM(50) | - | ||||
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.
we are DH40 steel suppliers ,also can supply DH32 steel plate,DH36 steel plate,please contact us if you need
Just like you, 70% customers choose long-term cooperation with BBN steel not only for our good product and service quality, good reputation in the international market, but also for our experienced one-stop raw material supply and further steel processing!
