What is the chemical composition of steel SA 516?

SA 516 is a designation for carbon steel plates used for pressure vessel applications. The specific chemical composition of SA 516 steel can vary slightly depending on the manufacturer and grade within the SA 516 designation. However, a typical chemical composition range for SA 516 grades 60, 65, and 70 may include the following elements:

- Carbon (C): 0.18% - 0.27%
- Manganese (Mn): 0.85% - 1.20%
- Phosphorus (P): 0.035% max
- Sulfur (S): 0.035% max
- Silicon (Si): 0.15% - 0.40%
- Copper (Cu): 0.35% max (when specified)

These percentages are approximate and may vary based on the specific grade and manufacturer. The chemical composition of steel SA 516 is carefully controlled to ensure the desired mechanical properties, such as high tensile strength, good notch toughness, and resistance to brittle fracture.

For precise information on the chemical composition of a particular SA 516 grade, it is advisable to refer to the material specifications provided by the manufacturer or consult applicable standards such as ASTM A516/A516M.