GL DH40 shipbuilding steel plate

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10-May-2024

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

The application of GL DH40 shipbuilding steel plate

GL DH40 shipbuilding steel plate is mainly used to Shipbuilding Project and Ocean Offshore Structural Project.

Mechnical property for GL DH40 shipbuilding steel plate

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

Chemical composition for GL DH40 shipbuilding steel plate (Heat Analysis Max%)

Main chemical elements composition of GL 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

The rolling size of GL DH40 shipbuilding steel plate

Thickness	1.2-40mm
Width	1220-4200mm
Length	5000-18000mm

Notes: coil thickness ≤ 25mm

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