DNV Grade A420,NV A420

DNV Grade A420,NV A420,DNV A420 steel plate is one steel grade of extra high strength shipbuilding plate which is mainly used for built hull of vessels,ship body construction.Normally when rolling of steel plate NV Grade A420,heat treatment shall be Quenching and Tempering to improve steel strength in yield and tensile points.The Charpy V impacting test shall be adopted under 0 centigrade.

Technical Requirements & Additional Services for DNV A420 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 DNV Grade A420 shipbuilding plate:

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

►Chemical composition for DNV Grade A420 ship plate (Heat Analysis Max%)

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