DH40 steel plate DH40 steel plate is ship steel plate and a high-strength marine structure steel plate, with good strength, can be used to manufacture such as ship plate facilities, large offshore platforms, etc.As DH40 steel, the "D" meansgrade, the "H" means high strength steel, the "40" represents yield strength.Produt size: Thickness: 4mm to 260mm Width: 1200mm to 4000mm Length: 3000mm to 18000mm Chemical content: C Si Mn P S Ti Cu Cr NI 0.18 max 0.5 max 0.9-1.6 0.035 max 0.035 max 0.02 max 0.5 max 0.2 max 0.4 max Mechanical property: Rm (MPa) Re(MPa) min A% min 510-660 390 20 Cooperative parter: