We offer API 5L X70 steel pipes as large diameter pipes:
1.API 5L X70 Chemical composition: Si :≤0.55 C:0.04-0.16 Mn:1.1-1.7 S :≤0.035 P :≤0.0.35
X70 steel plate/pipes is one mainly of Steel for large diameter pipes,API-X70 steel with the demands in mechanical properties of the pipes followed the API specification for grade X70 (YS is 485MPa, TS is from 600-750 MPa).API-X70 steel is well known that a low carbon bainitic microstructure offers an excellent combination of strength and toughness.
| Grade | PSL 1API 5L X70 Mechanical Property | |||
| Thickness
mm |
Yield | Tensile | Elongation | |
| PSL 1API 5L X70 | Min Mpa | Mpa | Min % | |
| 483 | 565 | a | ||
| Grade | PSL 2API 5L X70 Mechanical Property | |||
| Thickness
mm |
Yield | Tensile | Elongation | |
| PSL 2API 5L X70 | Min Mpa | Mpa | Min % | |
| 483-621 | 565-758 | a | ||
The minimum elongation in 2 in. (50.8 mm) shall be that determined by the following equation:
U.S.Customary Unit Equation: e= 625,000*A0.2/U0.9; SI Unit Equation: e= 1,944A0.2/U0.9
Where e= minimum elongation in 2 in. (50.8 mm) in percent rounded to the nearest percent.
