API 5L grade X65 PSL2 steel grade variants and properties

API 5L grade X65 PSL2 steel is also called L450 steel. API 5L grade X65 PSL2 steel grade has two variants: API 5L X65Q PSL2 and API 5L X65M PSL2, which are corresponding to L450Q PSL2 and L450M PSL2 respectively. In the grades, Q indicates the delivery condition is quenching and tempering, M indicates the delivery condition is thermomechanical rolling or thermomechanical forming.

API 5L grade X65 PSL2 steel pipe mechanical properties:

API 5L PSL2	Grade	Yield Strength		Tensile Strength a		Ratio a,c
		Rt0.5 MPa (psi)		Rm MPa (psi)		Rt0.5/Rm
		min.	max.	min.	max.	max.
API 5L X65 PSL2	X65Q	450 (65,300)	600 (87,000)	535 (77,600)	760 (110,200)	0.93
API 5L X65 PSL2	X65M	450 (65,300)	600 (87,000)	535 (77,600)	760 (110,200)	0.93

API 5L grade X65 PSL2 steel pipe is highly resistant to shock and vibration. API 5L grade X65 PSL2 steel is a high level grade in API 5L specification. API 5L grade X65 PSL2 steel pipes are widely used for oil and gas transmissions.

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