The A515/A515M-17 steel grade is a standard specification for pressure vessel plates, carbon steel, for intermediate- and higher-temperature service. It is widely used in the fabrication of boilers and pressure vessels.
The chemical composition of A515/A515M-17 steel grade typically consists of the following elements:
– Carbon (C): The maximum carbon content is 0.28%. Carbon is a key element in steel, providing strength and hardness.
– Manganese (Mn): The maximum manganese content is 0.90%. Manganese is added to improve the strength and toughness of the steel.
– Phosphorus (P): The maximum phosphorus content is 0.025%. Phosphorus can affect the steel’s mechanical properties and weldability.
– Sulfur (S): The maximum sulfur content is 0.025%. Sulfur can cause brittleness in steel and affect its ability to be welded.
– Silicon (Si): The maximum silicon content is 0.15%. Silicon is added to deoxidize the steel and improve its strength and corrosion resistance.
The mechanical properties of A515/A515M-17 steel grade depend on its thickness and heat treatment. Typically, the material has the following mechanical properties:
– Tensile Strength: The minimum tensile strength is 485 MPa (70,000 psi). Tensile strength measures the maximum amount of stress a material can withstand before breaking or separating.
– Yield Strength: The minimum yield strength is 275 MPa (40,000 psi). Yield strength is the amount of stress a material can withstand without permanent deformation.
– Elongation: The minimum elongation is 16%. Elongation measures the ability of the material to stretch or deform before breaking.
The standard number for A515/A515M-17 steel grade is ASTM A515/A515M-17. This standard provides guidelines for the chemical composition and mechanical properties of the steel.
The corresponding steel grade for A515/A515M-17 is SA515/SA515M. SA515/SA515M is the steel designation used by ASME (American Society of Mechanical Engineers) for the same material. ASME is a globally recognized organization that establishes codes and standards for the design, fabrication, and inspection of pressure vessels and piping systems.
In conclusion, the A515/A515M-17 steel grade is a carbon steel used in the fabrication of pressure vessels and boilers. Its key properties include a specific chemical composition and mechanical properties, as well as compliance with the ASTM A515/A515M-17 standard and the corresponding SA515/SA515M steel designation.