LR ship building steel plate

LR Grade AH40

Steel plate LR Grade AH40 is mainly used to building ships and vessels,so we also call this steel as LR Grade AH40 ship plate,LR Grade AH40 shipbuilding steel plate,LR Grade AH40 marine steel plate or LR Grade AH40 shipbuilding plate.Anyway these LR Grade AH40 shipbuilding steel plates are the same and owned higher steel strength at minimum yield strength 390 Mpa and with minimum tensile strength 510 Mpa.Done low temperature impacting test for LR Grade AH40 under zero centigree when rolling.

LR is the abbreviation of Lloyd’s Register of Shipping,LR society the business scope includes chemical and energy, shipping, oil and gas, transportation,LRQA etc.

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 AH40 shipbuilding structual steel:

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

Chemical composition for LR Grade AH40 ship steel (Heat Analysis Max%)

Main chemical elements composition of LR Grade AH40
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

LR Steel grade:LR/FH32,LR/FH36,LR/FH40,LR/EH32,LR/EH36,LR/EH40,LR/DH32,LR/DH36,LR/DH40,LR/AH32,LR/AH36,LR/AH40,LR/A,LR/B,LR/D,LR/E.

We supply Shipbuilding steel plate in two items, one is ordinary strength, grade A B D E and the others is higher strength, grade FH32/36/40, DHFH32/36/40, and FH32/36/40.

We hot rolled ship steel plates have through nine classification society DNV,ABS,LR,BV,GL,NK,RIAN,. Besides plates, our company also offer angle steel, bulb steel and flat steel profile for shipbuilding.

Our predominance is that we can offer super thick steel plate in Shipbuilding directly from our mill in competitive price and the fastest delivery time. For example,BV EH36 in thickness of 160mm,DNV FH32 in thickness of 110mm,and GL A in thickness of 170mm.All of them we could supply to our customers.

We have cooperated with Malaysia, Thailand, Korea, Singapore, Indonesia and Vietnam large shipyard and oil platform in steel plates and steel profiles. Just their large ship yard manager friends relation which has established our company sound reputation in oversea steel market.

If customers requirement, we also could supply the service of steel plates pretreatment, cutting in firmed drawing and bend pipe from steel plate.

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