Brief introduction of X52 pipeline steel

"X" in the X52 stee designation indicates pipeline steel, and "52" indicates that the minimum yield strength value of the steel plate is 52ksi (1ksi=6.895Mpa).
· Delivery status and execution standards of X52 pipeline steel
Delivery status: delivered in the heat treatment status of hot rolling, normalizing, normalizing rolling, thermomechanical rolling, quenching + tempering.
Executive standard: GB/T21237-2018 standard is implemented. In the 2018 version of the standard, X52 pipeline steel is divided into two levels: PSL1 and PSL2.
· Chemical composition of X52 pipeline steel

Grade	C	Mn	P	S	Cu	Ni	Cr	Mu
X52	≤0.26	≤1.40	≤0.03	≤0.030	≤0.5	≤0.5	≤0.5	≤0.15

·Mechanical properties of X52 pipeline steel

Grade	Yield Strength	Tensile Strength	Elongation
Grade	σs(MPa)	σb(MPa)	%
X52	≥360	≥460	≥19

·Characteristics of X52 pipeline steel
X52 pipeline steel is a wide and thick steel plate for oil and gas pipelines. With the continuous development of oil and gas and other energy sources, the use of X52 pipeline steel to transport oil and gas and other energy has the advantages of high efficiency, economy, and safety. Influenced by various factors such as safety, X52 pipeline steel is required to have the characteristics of high strength, high toughness, good welding performance and corrosion resistance.