A285 grade C is a carbon steel plate used in pressure vessel applications. It is commonly used in the construction of boilers and storage tanks due to its good weldability and low to intermediate tensile strength.
The maximum phosphorus content specified for A285 grade C varies depending on the thickness of the plate. According to the ASTM A285 specification, the maximum phosphorus content allowed for plates up to 1 inch thick is 0.025%. For plates over 1 inch thick, the maximum phosphorus content allowed is 0.030%.
Phosphorus is a harmful impurity in steel that can cause brittleness, reduce toughness, and increase the risk of cracking during fabrication and service. Therefore, it is important to control the phosphorus content in steel to ensure its mechanical properties and performance.
It is worth noting that while the ASTM A285 specification provides guidelines for the maximum phosphorus content in A285 grade C plates, actual phosphorus levels may vary depending on the manufacturing process and specific composition of the steel. It is important to consult the manufacturer's documentation for the specific product being used to determine its exact chemical composition and properties.
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