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  • DNV A550
  • NV A550

DNV Grade A550,NV A550

  • 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
The highest tensile strength in normal shipbuilding steel,DNV A550 ship plate is normally used to build ships which are sailing in the bad surroudings,such as coldest ocean waters and the tough situiation.Icebreakers are the main end application for DNV A550 marine steel plate.DNV Grade A550 can bear the tough ice pieces and low temperature ocean water owing it have to be done impacting test under minus 40 centigree when rolling.
■ 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 A550 shipbuilding structual steel:

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

Chemical composition for DNV Grade A550 ship steel (Heat Analysis Max%)

Main chemical elements composition of DNV Grade A550
C Si Mn P S N
0.21 0.55 1.70 0.035 0.035 0.02

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