API 5CT K55 CASING
GNEE steel is one of the large manufacturers for high quality API 5CT K55 Tubes. API 5CT K55 casing pipe is very similar to J55 Casing Pipe.
PSL 1 | |||||||||
GRADE | Chemical Composition | Mechanical Property | |||||||
C (Max) | Mn (Max) | P (Max) | S (Max) | TENSILE ( Min ) | YIELD ( Min ) | ||||
Psi X 1000 | Mpa | Psi X 1000 | Mpa | ||||||
A25 | CL I | 0.21 | 0.60 | 0.030 | 0.030 | 45 | 310 | 25 | 172 |
CL II | 0.21 | 0.60 | 0.030 | 0.030 | |||||
A | 0.22 | 0.90 | 0.030 | 0.030 | 48 | 331 | 30 | 207 | |
B | 0.26 | 1.20 | 0.030 | 0.030 | 60 | 414 | 35 | 241 | |
X42 | 0.26 | 1.30 | 0.030 | 0.030 | 60 | 414 | 42 | 290 | |
X46 | 0.26 | 1.40 | 0.030 | 0.030 | 63 | 434 | 46 | 317 | |
X52 | 0.26 | 1.40 | 0.030 | 0.030 | 66 | 455 | 52 | 359 | |
X56 | 0.26 | 1.40 | 0.030 | 0.030 | 71 | 490 | 56 | 386 | |
X60 | 0.26 | 1.40 | 0.030 | 0.030 | 75 | 517 | 60 | 414 | |
X65 | 0.26 | 1.45 | 0.030 | 0.030 | 77 | 531 | 65 | 448 | |
X70 | 0.26 | 1.65 | 0.030 | 0.030 | 82 | 565 | 70 | 483 | |
PSL 2 | ||||||||||||
GRADE | Chemical Composition | Mechanical Property | ||||||||||
C (Max) |
Mn (Max) |
P (Max) |
S (Max) |
Tensile | Yield | C. E. IMPACT ENERGY | ||||||
Psi x 1000 | Mpa | Psi x 1000 | Mpa | PCM | IIW | J | FT/LB | |||||
B | 0.22 | 1.20 | 0.025 | 0.015 | 60 - 110 | 414 - 758 | 35 - 65 | 241 - 448 | 0.25 | 0.43 | T/L 27/41 | T/L 20/30 |
X42 | 0.22 | 1.30 | 0.025 | 0.015 | 60 - 110 | 414 - 758 | 42 - 72 | 290 - 496 | 0.25 | 0.43 | T/L 27/41 | T/L 20/30 |
X46 | 0.22 | 1.40 | 0.025 | 0.015 | 63 - 110 | 434 - 758 | 46 - 76 | 317 - 524 | 0.25 | 0.43 | T/L 27/41 | T/L 20/30 |
X52 | 0.22 | 1.40 | 0.025 | 0.015 | 66 - 110 | 455 - 758 | 52 - 77 | 359 - 531 | 0.25 | 0.43 | T/L 27/41 | T/L 20/30 |
X56 | 0.22 | 1.40 | 0.025 | 0.015 | 71 - 110 | 490 - 758 | 56 - 79 | 386 - 544 | 0.25 | 0.43 | T/L 27/41 | T/L 20/30 |
X60 | 0.22 | 1.40 | 0.025 | 0.015 | 75 - 110 | 517 - 758 | 60 - 82 | 414 - 565 | 0.25 | 0.43 | T/L 27/41 | T/L 20/30 |
X65 | 0.22 | 1.45 | 0.025 | 0.015 | 77 - 110 | 531 - 758 | 65 - 82 | 448 - 565 | 0.25 | 0.43 | T/L 27/41 | T/L 20/30 |
X70 | 0.22 | 1.65 | 0.025 | 0.015 | 82 - 110 | 565 - 758 | 70 - 82 | 483 - 565 | 0.25 | 0.43 | T/L 27/41 | T/L 20/30 |
X80 | 0.22 | 1.90 | 0.025 | 0.015 | 90 - 120 | 621 - 827 | 80 - 102 | 552 - 705 | 0.25 | 0.43 | T/L 27/41 | T/L 20/30 |
Line pipe grade designations come from API Spec 5L Specification for Line Pipe. Standard Line Pipe has grade designation A and B. Stronger grades have the designation X followed by the specified minimum yield strength of the pipe steel, measured in kilopounds per square inch (abbreviated ksi), e.g. X60 for pipe having a minimum yield strength of 60 ksi. See the table below for the standard available grades.
Line Pipe Physical Properties
API 5L Grade | Yield Strength min. (ksi) |
Tensile Strength min. (ksi) |
Yield to Tensile Ratio (max.) |
Elongation min. %1 |
A | 30 | 48 | 0.93 | 28 |
B | 35 | 60 | 0.93 | 23 |
X42 | 42 | 60 | 0.93 | 23 |
X46 | 46 | 63 | 0.93 | 22 |
X52 | 52 | 66 | 0.93 | 21 |
X56 | 56 | 71 | 0.93 | 19 |
X60 | 60 | 75 | 0.93 | 19 |
X65 | 65 | 77 | 0.93 | 18 |
X70 | 70 | 82 | 0.93 | 17 |
X80 | 80 | 90 | 0.93 | 16 |