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  • LR Grade A420
  • LR A420

LR Grade A420,LR A420

  • Steel Standard: LR (Lloyd’s Register)
  • 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
Ship plate also named as shipbuilding plate,shipbuilding steel plate and marine plate.LR Grade A420 ship steel plate is an extra high strength ship plate which owned the minimum yield strength at 420 Mpa.When rolling steel plate LR A420,low temperature impacting test shall be done at zero centigree.
■ 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 LR Grade A420 shipbuilding structual steel:

Yield strength (≥Mpa) Tensile strength (Mpa) Impacting test
420 530-680
0 Centigrade

Chemical composition for LR Grade A420 ship steel (Heat Analysis Max%)

Main chemical elements composition of LR Grade A420
C Si Mn P S N
0.21 0.55 1.70 0.035 0.035 0.02

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