GL Grade DH40 Marine steel

GL Grade DH40 Marine steel,GL Grade DH40 shipbuilding steel,GL DH40 steel plate GL Grade DH40 marine steel,GL Grade DH40 shipbuilding steel plate,GL DH40 steel plate,GL Grade DH40 ship plate,GL Grade DH40 marine steel plate are mainly used to build vessels which are sailing in low temperature oceans.When rolling GL Grade DH40, TMCP or Normalized shall be done for heat treatment,and low temperature impacting test have to be done under minus 20 centigree.GL Grade DH40 shipbuilding steel plate owned the highest tensile strength within 510-650 Mpa,and the minimum yield point shall be 390 Mpa. For improve the thickness-direct steel property for shipbuilding steel plate GL Grade DH40,Z-test for GL Grade DH40 is also necessary,our customers can choose three different classes,Z15,Z25 and Z35.In China stated owned steel mills,just Gnee steel can roll GL Grade DH40 shipbuilding steel plate with thickness above 100 millmeters.We can roll this steel grade GL Grade DH40 reach to 350 millimeters.   Chemical composition of Heat analysis for Shipbuilding steel plate GL Grade DH40 (Max %): C Mn Si P S Al (acid) Nb 0.18 0.90-1.60 0.50 0.035 0.035 ? 0.015 0.02-0.05 Ti V Ni Cu Cr Mo 0.02 0.03--0.10 0.40 0.35 0.20 0.08  Mechanical properties for Shipbuilding steel plate GL Grade DH40: Yield strength (Mpa) Tensile strength (Mpa) Steel Mark 390 510-650 GL/DH40/D40 url:http://www.gneesteels.com