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LR Grade A(LR GrA) Steel Plate for Ships

Steel Standard:LR (Lloyd’s Register)

Rolling Type:Shipbuilding steel plate,Common strength ship plate

Thickness:3mm-300mm

Width:1200mm-4200mm

Length:3000mm-18000mm

Heat Treatment:As Rolled/Control-rolled/TMCP/Normalised

What is LR Grade A shipbuilding Steel Plate?

LR grade A steel is a kind of hot rolled general tensile strength steel, and the like LR Grade B, LR Grade D and LR Grade E. LR steels come 4 grades in ordinary-strength steel for shipbuilding and grade A is the lowest one of them. The LR A grade steel plates have yield strength of 34,100 psi (235 MPa), and ultimate tensile strength of 58,000 – 75,500 psi (400-520 MPa). All the LR/A shipbuilding Steel offered by GNEE steel can be certificated by Lloyd’s Register of Shipping (LR).

Grade A steel is the impact force subjected to 20 ° C
Grade B steel impact force at  0 ° C
Grade D steel impact force at -20 ° C
Grade E steel impact force at -40 ° C

 

LR Grade A Shipbuilding Steel Application:

LR A grades of steel plate are almost exclusively used in the Shipbuilding Industry for the construction of structural parts of ships, barges and marine equipment. LR A Shipbuilding steel plates also can be used for ship repairing, the offshore oil drilling platform, the platform pipe joints and other components.

Specification Parameters
Basic Information

Mechanical property for LR Grade A shipbuilding structual steel:

Yield strength (≥Mpa) Tensile strength (Mpa) Elongation in ≥,%
235 400-520 200mm 50mm
21 24


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

Main chemical elements composition of LR Grade A
C Si Mn P S
0.21 0.50 2.5×C 0.035 0.035

 

Service Support
LR Grade A(LR GrA) Steel Plate for Ships

Technical Requirements & Additional Services for LR Grade A steel plate:

♦ 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