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API X70 steel pipe
Sources: this site Click: Date: 2016-2-17 1:40:47
American Petroleum Institute API (American Petroleum Institute) for short, 5L refers to the API standard API Spec 5L "line pipe", X70 refers to the steel grade, divided into PSL1 and PSL2, the required minimum yield strength 70300psi, The minimum ultimate tensile strength of 82700psi.
Uses: for the oil and gas industry, oxygen, water, oil pipes.
Mechanical Properties of API X70
| Standard | Tensile Strength(MPa) | Yield Strength(MPa) | Yield Ratio | Elongatio(%) |
| API X70 | 485～605 | ≤0.90 | 18 | ≥40 |
Chemical Composition of API X70
| Standard | C(%) | Si(%) | Mn(%) | P(%) | S(%) | Nb(%) |
| API X70 | ≤0.16 | ≤0.45 | ≤1.70 | ≤0.020 | ≤0.010 | ≤0.06 |
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