Sep 20, 2017 · API 5L PIPE CHEMICAL AND MECHANICAL PROPERTIES The yield strength of an API 5L pipe is specified with the number that follows the X in the material grade designation (in kilopounds per square inch i.e. KSI). So, for instance, an API 5L X52 pipe has a minimum yield strength of 52 KSI.
API 5L Seamless Line Pipe X52 Grade Steel Pipe API5L Mechanical Properties API 5L PSL-1 X52 API 5L PSL-2 X52 Tensile strength, min /max, psi (MPa) 66,700 (460)/ n/a 66,700 / 110,200 Yield strength, min /max, psi (MPa) 52,000 (300)/n/a 52,000 / 76,900
API 5L is suitable for conveying gas, water, and oil. Specifications for API 5L adhere to the International Organization for Standardization ISO 3183, standardizing pipeline transportation systems within the materials, equipment and offshore structures for natural gas, petroleum, and petrochemical industries.