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  • LR Grade DH40
  • LR DH40

LR Grade DH40,LR DH40

  • Steel Standard: LR (Lloyd’s Register)
  • 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
The higher steel grade LR Grade DH40 shipbuilding steel plate are used abnormally owning to its high cost and substitutability.With the minimum yield point at 390 Mpa,and tensile strength within 510-650 Mpa,steel plate LR Grade DH40 can bear the higher strength and used to some steel structure parts in ships.Normalised heat treatment and low temperature impacting test shall be done for LR Grade DH40 shipbuilding steel plate.
■ 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 DH40 shipbuilding structual steel:

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

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

Main chemical elements composition of LR 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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