DNV DH40 Shipbuilding Steel

Grade DNV DH40 marine steel, NV D40 material is a hull structural steel. DNV DH40 shipbuilding steel is mainly used for higher strength ships and ocean engineering structural steel. In the standard ASTM A131/A131M, offshore steel grade ASTM A131 DH40 is the best equivalent steel grade with DNV DH40. Shanghai Katalor can offer DNV DH40 shipbuilding steel, NVD40 marine steel with various sizes, shapes and large inventory. Our DNV DH40 shipbuilding Steel plates, sheets, bars, angle steel, bulb flats offered by Katalor Industry can be certificated by Det Norske Veritas (DNV).

DNV Class Marine Steel Category

DNV class marine steel is divided into A, B, D, E ordinary strength shipbuilding steel, higher strength shipbuilding steel, extra high strength steel plate as follows.

Ordinary Strength Shipbuilding Steel Grades

DNV A

DNV B

DNV D

DNV E

Higher Strength Shipbuilding Steel Grades

DNV AH32	DNV DH32	DNV EH32	DNV FH32
DNV AH36	DNV DH36	DNV EH36	DNV FH36
DNV AH40	DNV DH40	DNV EH40	DNV FH40

Extra High Strength Steel Grades

NV A420	NV D420	NV E420	NV F420
NV A460	NV D460	NV E460	NV F460
NV A500	NV D500	NV E500	NV F500
NV A550	NV D550	NV E550	NV F550
NV A620	NV D620	NV E620	NV F620

DNV DH40 Shipbuilding Steel Chemical Requirements (%)

C max	Mn	Si	P max	S max	Al max.	Cb	V	Ti max.	Cu max.	Cr max.	Ni max.	Mo max.
0.18	0.90-1.60	0.10-0.50	0.035	0.035	0.015	0.02-0.05	0.05-0.10	0.02	0.35	0.20	0.40	0.08

DNV DH40 Shipbuilding Steel Tensile Requirements

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation in 8 in. min. %	Elongation in 2 in. min. %
390	510-650	19	22

DNV DH40 Shipbuilding Steel Application

DNV DH40 shipbuilding steel, NVD40 ship plates are mainly used in the manufacture of hull, the construction of offshore platform and the manufacture of submarine pipeline. It is also suitable for ocean engineering project manufacturing of barges, offshore oil equipment.