API 5L X70 steel is pipeline steel suitable for use in gas, water, and oil conveying projects in the natural gas and oil industries. API 5L X70 steel covers two specification levels: PSL1 and PSL2. The chemical composition of API 5L X70 steel differs in API 5L X70 PSL1 and API 5L X70 PSL2 steel.
The chemical composition of API 5L X70 steel:
| Grade | C | Mn | P | S | Si | V | Nb | Ti | ||||||
| API 5L X70 PSL1 | 0.26 | 1.65 | 0.030 | 0.030 | Nb + V + Ti≤0.15% | |||||||||
| API 5L X70 PSL2 | 0.12 | 1.70 | 0.025 | 0.015 | 0.45 | Nb + V + Ti≤0.15% | ||||||||
The above is about chemical composition of API 5L X70 steel. For more details, welcome to contact us, and we will give personal explanation. API 5L X70 steel is resistant to cracking forces that may propagate in long pipelines and has certain sour service suitability. That makes API 5L X70 steel has long service life.
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