AH36 DH36 Mild Marine Grade Shipbuilding Steel Plate

Chemical Analysis: Samples are taken from the steel plates and subjected to chemical analysis to verify that the composition of elements adheres to the specified standards. This analysis helps ensure the desired mechanical and corrosion-resistant properties.

Mechanical Testing: Tensile tests, yield strength tests, and Charpy V-notch impact tests are conducted to evaluate the mechanical properties of the steel. These tests provide crucial data on the strength, ductility, and toughness of the material.

Non-Destructive Testing (NDT): Techniques such as ultrasonic testing, magnetic particle inspection, and radiographic testing are employed to detect internal defects within the steel plates that may not be visible on the surface. NDT helps ensure the integrity of the material and reduces the risk of failure in service.

Data and Specifications of AH36 and DH36 Shipbuilding Steel Plates

The data associated with AH36 and DH36 steel plates provides valuable insights for engineers and designers in the marine industry. Key data points include:

Chemical Composition: The precise percentages of elements such as carbon (typically around {{0}}.18% for AH36 and 0.17% for DH36), manganese (1.00 - 1.60%), silicon (0.15 - 0.55%), sulfur ( Less than or equal to 0.035%), and phosphorus ( Less than or equal to 0.035%) are crucial for understanding the steel's properties.

Mechanical Properties: Yield strength (minimum 355 MPa for AH36 and 355 MPa for DH36), tensile strength (490 - 630 MPa for both), elongation ( Greater than or equal to 21% for both), and Charpy V-notch impact energy at various temperatures (typically specified at -20 degree or -40 degree ) are essential parameters for structural design.

Weldability: Information on the weldability of these steel plates is vital for fabrication processes. Factors such as preheating requirements, welding procedures, and post-weld heat treatment are specified to ensure reliable weld joints.



 

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