Sample | Yield strength (0.7%eul) (mpa) | Tensile strength (mpa) | Percentage elongation after fracture (%) | |
Numbering | Width × wall thickness × gauge length (mm) | |||
Failed tubing (portrait) | 19 × 6.45 × 50 | 789 | 838 | 20 |
759 | 828 | 21 | ||
759 | 822 | 22 | ||
704 | 816 | 20 | ||
Mean value | 753 | 826 | 21 | |
Intact tubing (portrait) | 19 × 6.45 × 50 | 720 | 779 | 23 |
736 | 794 | 24 | ||
734 | 788 | 25 | ||
736 | 796 | 24 | ||
Mean value | 732 | 789 | 24 | |
API spec 5ct-2021 | 758 ~ 828 | ≥793 | ≥12 | |
Provisions of supply technical agreement | 758 ~ 828 | ≥793 | / |