DNV Grade DH40,NV D40

DNV Grade DH40,NV D40,DNV DH40 steel plate are mainly used to build vessels which are sailing in low temperature oceans.When rolling DNV Grade DH40, TMCP or Normalized shall be done for heat treatment,and low temperature impacting test have to be done under minus 20 centigree.DNV Grade DH40 shipbuilding steel plate owned the highest tensile strength within 510-650 Mpa,and the minimum yield point shall be 390 Mpa.

Technical Requirements & Additional Services for DNV DH40 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 DH40 shipbuilding plate:

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

►Chemical composition for DNV Grade DH40 ship plate (Heat Analysis Max%)

Main chemical elements composition of DNV 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