What Is ABS AH40?

ABS AH40 steel is a high-strength, high-toughness material widely used in shipbuilding and offshore structures. The “A” represents the quality grade, while “H” indicates high-strength steel, with “40” referring to a yield strength of 40 kgf/mm² (about 390 MPa).

It offers excellent corrosion resistance, tensile and bending strength, and good weldability, performing reliably in harsh marine conditions. This makes it suitable for applications like ship hulls, decks, and offshore platforms, where durability, impact resistance, and reduced maintenance are essential for long-term performance.

Characteristics of AH40 Shipbuilding Steel Plate

• High strength and toughness
• Excellent corrosion resistance
• Good weldability and machinability
• Strong resistance to bending, torsion, and impact
• Reliable performance in harsh marine environments

Equivalent steel grade of AB/AH40