SA 516 Gr 70 carbon steel plates are one of the most widely used materials in various industries, including oil and gas, petrochemical, and power generation. These plates are also known as ASME SA516 Grade 70 Boiler Quality Plates and are used as a standard material for designing pressure vessels and boilers. This blog post will provide a comprehensive guide about SA 516 Gr 70 carbon steel plates, including their properties, uses, and composition.
What is SA 516 Gr 70 Carbon Steel Plates?
SA 516 Gr 70 Carbon Steel Plates are plates made of carbon steel that contain milder amounts of manganese, phosphorus, sulfur and silicon compared to other varieties, such as the A516 GR 60-grade. This plate type is used for pressure vessels and has a tensile strength ranging from 70-90 ksi. It’s often called the “workhorse” grade among carbon steels because it can withstand all sorts of working conditions while retaining its original shape. Its superior strength makes these plates ideal for industrial applications where wear and tear may be more frequent than usual.
Physical properties of SA 516 Gr 70 Carbon Steel Plates
- SA516 Gr 70 Carbon Steel Plates are highly resistant to corrosion and oxidation. The plates are corrosion-resistant due to alloying elements like molybdenum, chromium, and nickel in their composition, which prevents them from forming rust or degradation.
- The plates have medium carbon steel and low sulfur content for strength and toughness. This results in higher yield strength than other grades of steel plates like A36 when it comes under pressure or stress.
- SA516 Gr 70 Carbon Steel Plates have high tensile strength making them ideal for applications requiring high levels of pressure resistance, such as boilers & other heat ex caters applications. This makes them ideal for various industries, including petrochemical plants, gas refineries, and power generation plants, where strong structural components must be in place for safe operation.
- The carbon content is 0.27 % maximum making these plates bendable but not breakable while still staying tough under heavy loads. They also have excellent weldability properties allowing them to be welded easily with most welding processes available today.
- Five lastly, thermomechanical treatment is also done on this grade plate, giving it heat treatment properties that ensure ultimate safety during operations in temperature-critical environments.
Uses of SA 516 Gr 70 Carbon Steel Plates
- SA 516 Gr 70 Carbon Steel Plates are used in a wide variety of applications, including:
- Storage tanks and vessels: favorable for tank and container wall thicknesses due to excellent toughness and weldability
- Pressure vessel components: such as stiffeners, shells, bases, flanges for pipes, etc., require strength and good corrosion resistance
- Pressure piping systems; SA-516 Gr 70 plate is often used in A106/A333 grade carbon steel pipe since it offers better mechanical properties at a lower cost than ASTM A516-70 pipe.
- Heat exchangers, offshore platform structures, and bridges that require enhanced welding fabrication properties such as PWHT (post-weld heat treatment)
- Factory flooring; the superior wear resistance of its abrasion-resistant plates makes them suitable for heavy loads
- Industrial machinery & equipment; excellent corrosion resistance ensures maximum performance when exposed to extreme conditions
Composition of SA 516 Gr 70 Carbon Steel Plates
Carbon Steel SA 516 Gr. 70 Plates:
1) Composition: This grade of steel contains Carbon (C), Manganese (Mn), Phosphorous (P), Sulphuric (S), and Silicon (Si) as major alloying elements.
2) Tensile Strength: Minimum 485 Mpa, Yield Strength: 240 Mpa, and Elongation as 6% per Low carbon equivalent value.
3) All plates are tested from raw materials to finished products at each stage of the manufacturing process for superior quality control.
4) Depending on customer requirements, plants can be supplied in various lengths, widths, and thicknesses.
Conclusion:
In summary, SA 516 Gr 70 carbon steel plates are versatile and widely used in various industrial applications. These plates offer high strength, impact resistance, and excellent weldability, making them ideal for pressure vessels, boilers, and other high-pressure applications. They are also available in a range of thicknesses and widths and can be easily fabricated into custom shapes. If you’re looking for a reliable and durable material for your industrial application, SA 516 Gr 70 carbon steel plates are an excellent choice.
