What is API 5L Gr X56 PSL1 /PSL 2 Line Pipe
X56 line pipe belongs to a steel grade classification in the API 5L standard. The "X" in its name represents line steel, and "56" indicates a minimum yield strength of 56,000 psi (approximately 386 MPa). This type of pipe is typically made of carbon steel or low-alloy steel, possessing high strength and good toughness, and is suitable for medium-pressure conveying environments.
What is the Specification of Carbon Steel API 5L X56 Pipe
What is the Chemical Composition of API 5L X56 PSL 1 Carbon Steel Line Pipes
| Mass fraction, based upon heat and product analysis a | ||||||
| SEAMLESS PIPE | ||||||
| C | Mn | P | V | Nb | Ti | |
| maxb | maxb | max. | max. | max. | max. | max. |
| 0.28 | 1.20 | 0.030 | 0.030 | c,d | c,d | d |
| WELDED PIPE | ||||||
| 0.26 | 1.20 | 0.030 | 0.030 | c,d | c,d | d |
What is the Chemical Composition of API 5L X56 PSL 2 Carbon Steel Line Pipes
| Mass fraction, based upon heat and product analysis % maximum | CARBON EQUIVALENT a | ||||||||||
| % MAXIMUM | |||||||||||
| Cb | Si | Mnb | P | S | V | Nb | Ti | Other | CEIIW | CEPcm | |
| SEAMLESS & WELDED PIPES | |||||||||||
| L320N or X56N | 0.24 | 0.4 | 1.2 | 0.025 | 0.015 | 0.07 | 0.05 | 0.04 | e | 0.43 | 0.25 |
| L320Q or X56Q | 0.18 | 0.45 | 1.4 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | e | 0.43 | 0.25 |
| WELDED PIPE | |||||||||||
| L290M OR X56M | 0.22 | 0.45 | 1.3 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | e | 0.43 | 0.25 |
What is the Mechanical Properties of API 5L X56 PSL 1 Carbon Steel Line Pipes
| Y.S | T.S | ELONGATION |
| Mpa(psi) | Mpa(psi) | |
| min | min | min |
| 390(56 600) | 490(71 100) | F |
What is the Mechanical Properties of API 5L X56 PSL 2 Carbon Steel Line Pipes
| Y.S | T.S | ELONGATION |
| Mpa(psi) | Mpa(psi) | |
| min | min | min |
| 390(56 600) | 545(79 000) | F |
