Characteristics of ASTM A131 DH40 Steel Plate
ASTM A131 DH40 steel plate is a high-strength marine structural steel plate renowned for its excellent mechanical properties, weldability, and corrosion resistance. It is widely used in marine engineering, shipbuilding, oil platforms, and other related fields.
High Strength
The yield strength of DH40 steel plate is not less than 390 MPa, with a tensile strength ranging between 510-660 MPa, classifying it as a high-strength steel capable of withstanding significant loads and stresses.
Good Toughness
This steel plate maintains excellent toughness even in low-temperature environments, with impact toughness values meeting the requirements of classification societies. It is suitable for ships and marine structures operating in cold seas.
Excellent Weldability
DH40 steel plate has a low carbon equivalent, making it less prone to cracking during welding. It is compatible with various welding processes, including manual arc welding, submerged arc welding, and gas shielded welding.
Good Corrosion Resistance
Through special chemical composition design and heat treatment processes, the steel plate exhibits certain corrosion resistance, making it suitable for marine environments.
Good Machinability
DH40 steel plate is easy to cut, bend, and form, meeting the complex processing demands of shipbuilding and marine structures.
Compliance with International Standards
ASTM A131 DH40 steel plate conforms to the standards of the American Society for Testing and Materials (ASTM) and has been certified by major classification societies such as ABS, LR, DNV, and GL, ensuring reliable quality.
