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  • DNV DH40
  • NV D40

DNV Grade DH40,NV D40

  • Steel Standard: DNV (Det Norske Veritas)
  • Rolling Type: Shipbuilding steel plate,High tension ship plate
  • Thickness: 3mm-250mm
  • Width: 1200mm-4200mm
  • Length: 3000mm-18000mm
  • Heat Treatment: TMCP/Normalised
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■ Overview
DNV Grade DH40 marine steel plate are mainly used to build vessels which are sailing in low temperature oceans.When rolling DNV Grade DH40, TMCP or Normalized shall be done for heat treatment,and low temperature impacting test have to be done under minus 20 centigree.DNV Grade DH40 shipbuilding steel plate owned the highest tensile strength within 510-650 Mpa,and the minimum yield point shall be 390 Mpa.
■ Full Data
Technical Requirements & Additional Services:
♦ High tension test
♦ Z-Test (Z15,Z25,Z35)
♦ Low temperature impacting test
♦ Ultrasonic test under ASTM A435,A577,A578
♦ Cetificated by ABS,LR,GL,BV,DNV,KR,NK,CCS,RINA
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Shot blasting and Painting,Cutting and welding as per end user’s demands 
■ Techicals

Mechnical property for DNV Grade DH40 shipbuilding structual steel:

Yield strength (≥Mpa) Tensile strength (Mpa) Elongation in ≥,%
390 510-650 200mm 50mm
19 22

Chemical composition for DNV Grade DH40 ship steel (Heat Analysis Max%)

Main chemical elements composition of DNV Grade DH40
C Si Mn P S Al (acid) min. Nb
0.18 0.10-0.50 0.90-1.60 0.035 0.035 0.015 0.02-0.05
V Ti Cu Cr Ni Mo  
0.05-0.10 0.02 0.35 0.20 0.40 0.08  

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