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ASTM A516 is a specification for pressure vessel plates primarily used in the fabrication of pressure vessels and boilers. Known for its excellent weldability and notch toughness, A516 steel is particularly suitable for moderate to low-temperature applications. This specification includes several grades: Grade 55, Grade 60, Grade 65, and Grade 70, each defined by different mechanical properties and minimum yield strengths.



A516 Grade 55 offers a minimum yield strength of 38,000 psi and is suitable for moderate pressure vessel applications. Its balance of strength and ductility makes it a viable choice for various industrial applications.
A516 Grade 60 provides a minimum yield strength of 41,000 psi, making it suitable for a broader range of pressure vessel applications where greater strength is necessary. It maintains good weldability and toughness.
A516 Grade 65 offers a minimum yield strength of 44,000 psi and is designed for higher stress applications. This grade combines good weldability with enhanced strength and is commonly used in the oil and gas industries.



A516 Grade 70 is the highest grade within this specification, with a minimum yield strength of 48,000 psi. It is ideal for use in high-pressure applications and environments where low temperatures are a factor, providing excellent toughness and weldability.
Overall, ASTM A516 pressure vessel plates are widely used in various industries, including oil and gas, chemical processing, and power generation, due to their reliable performance under pressure and varying temperature conditions.


Grade Category Minimum Yield Strength (psi) Description
A516 Grade 55 Pressure Vessel Plate 38,000 Suitable for moderate pressure applications with good strength and ductility.
A516 Grade 60 Pressure Vessel Plate 41,000 Provides increased strength for a wider range of pressure vessel applications.
A516 Grade 65 Pressure Vessel Plate 44,000 Designed for higher stress applications, combining good weldability and strength.
A516 Grade 70 Pressure Vessel Plate 48,000 Ideal for high-pressure applications with excellent toughness and weldability.



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