LR Grade E550,LR E550

With alloy elements especially the element Nickel,LR E550 shipbuilding steel plate can bear the weather corrosion when using to build ships and vessels.When rolling LR Grade E550 steel plate,the steel should be chosed as full killed and Quenching and tempering heat treatment have to be done when the steel billets finished.Low temperature impacting test should be made under minus 40 centigree.

Technical Requirements & Additional Services for LR E550 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 

►Mechnical property for LR Grade E550 shipbuilding structual steel:

Yield strength (≥Mpa)	Tensile strength (Mpa)	Impacting test
550	670-835
		-40 Centigrade

►Chemical composition for LR Grade E550 ship steel (Heat Analysis Max%)

Main chemical elements composition of LR Grade E550
C	Si	Mn	P	S	N
0.20	0.55	1.70	0.030	0.030	0.02