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  • DNV D550
  • NV D550

DNV Grade D550,NV D550

  • Steel Standard: DNV (Det Norske Veritas)
  • Rolling Type: Extra high strength ship plate
  • Thickness: 6mm-250mm
  • Width: 1500mm-4200mm
  • Length: 3000mm-18000mm
  • Heat Treatment: Quenched and Tempered
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■ Overview
Marine steel plate DNV D550 have to be done low temperature impacting test under minus 40 centigree and done Quenched and tempered heat treatment for any thickness.Else,our engineers suggest our end users to choose Z-test for ship steel plate DNV D550 to improved the strength in thickness direction.
■ 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 D550 shipbuilding structual steel:

Yield strength (≥Mpa) Tensile strength (Mpa) Impacting test
550 670-835
-20 Centigrade

Chemical composition for DNV Grade D550 ship steel (Heat Analysis Max%)

Main chemical elements composition of DNV Grade D550
C Si Mn P S N
0.20 0.55 1.70 0.030 0.030 0.02

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