Exploring the Properties and Uses of ASTM A516 Gr. 70 Plate

ASTM A516 Gr. 70 is a carbon steel plate primarily used in pressure vessels and boilers. This plate is known for its exceptional strength, durability, and versatility. It is widely used in various applications in different industries, ranging from oil and gas to construction and transportation. This blog post will delve into the properties and uses of the ASTM A516 Gr. 70 plate. We will explore its chemical composition, mechanical properties, and applications.

What is  ASTM A516 GR? 70 PLATE?

ASTM A516 GR. 70 Plate is a carbon steel plate used for pressure vessel applications in the petrochemical, oil and gas, and chemical industries. It is available in four grades: 55, 60, 65, and 70. The grade designations represent different strength levels – Grade 70 having the highest yield strength of 690MPa minimum yet allowing ductility to remain sufficient for low-temperature services. This plate has excellent weldability characteristics due to its low carbon composition that prevents brittle embrittlement during welding operations.

Chemical Composition:

ASTM A516 Gr. 70 plate comprises carbon, manganese, phosphorus, sulfur, silicon, and trace amounts of other elements. The carbon content in this plate ranges from 0.27% to 0.31%, while the manganese content is around 0.79%. The phosphorus and sulfur content is limited at 0.025% and 0.025%, respectively. The presence of silicon in the ASTM A516 Gr. 70 plate provides improved oxidation and corrosion resistance.

Mechanical Properties:

The mechanical properties of the ASTM A516 Gr. 70 plate make it an ideal material for pressure vessels and boilers. The plate has a tensile strength of 70,000 to 90,000 psi and a 38,000 to 70,000 psi yield strength. The elongation at break is around 17% to 21%. This plate has excellent toughness and flexibility, making it resistant to brittle fracture during service.


ASTM A516 Gr. 70 plate is used in various oil and gas, chemical, and power generation applications. It is commonly used to construct pressure vessels, boilers, storage tanks, and heat exchangers. The plate is also used in the transportation industry to manufacture railcars, truck frames, and trailers. Additionally, it is used in the construction of bridges and buildings.


ASTM A516 Gr. 70 plate is easily fabricated and machined using standard methods. The plate can be cut, formed, welded, and easily drilled. It is available in various thicknesses and widths to meet different application requirements. It can be heat treated to enhance its properties further.


To summarise, ASTM A516 Gr. 70 plate is a highly versatile and durable material with extensive industrial applications. It is renowned for its exceptional strength, toughness, and flexibility. This plate is easily fabricated and machined, making it an ideal choice for various manufacturing processes. If you want a reliable and durable material for your next project, ASTM A516 Gr. 70 plate could be the perfect choice.


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