API 5L PSL2 X42 vs API 5L PSL2 X52
Property comparison of API 5L PSL2 X42 and API 5L PSL2 X52, both carbon steel.
| Property | API 5L PSL2 X42 | API 5L PSL2 X52 | Difference |
|---|---|---|---|
| Yield strength | 290 MPa | 360 MPa | +24% |
| Tensile strength | 415 MPa | 460 MPa | +11% |
| Elastic modulus | 207,000 MPa | 207,000 MPa | 0% |
| Shear modulus | 80,000 MPa | 80,000 MPa | 0% |
| Poisson ratio | 0.3 | 0.3 | 0% |
| Density | 7,850 kg/m³ | 7,850 kg/m³ | 0% |
| Thermal conductivity | 65.4 W/m·K | 65.4 W/m·K | 0% |
| Specific heat | 457 J/kg·K | 457 J/kg·K | 0% |
| Coefficient of thermal expansion | 0.000012 1/K | 0.000012 1/K | 0% |
Difference is API 5L PSL2 X52 relative to API 5L PSL2 X42. Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- grade
- X42 / L290
- standard
- API 5L (PSL2)
- heat treatment
- As-rolled or normalized
- grade
- X52 / L360
- standard
- API 5L (PSL2)
- heat treatment
- As-rolled or normalized
About API 5L line pipe
API 5L is the line pipe specification for oil and gas pipelines. Grades are designated by minimum yield strength in ksi (X42, X52, X60, X65, X70, X80). PSL 2 is the higher-quality product specification level with stricter chemistry, mechanical, and inspection requirements; PSL 1 is for lower-pressure service.
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