API 5CT L80 casing and tubing include grades L80-1, L80 9Cr (Cr 8%-10%), L80 13Cr (Cr 12%-14%), L80, minimum ...
More ...API 5CT L80 casing and tubing include grades L80-1, L80 9Cr (Cr 8%-10%), L80 13Cr (Cr 12%-14%), L80, minimum tensile strength 655 Mpa, yield strength 552 Mpa to 655 Mpa, it is a medium strength grade higher than J55/K55, and similar with N80 (YS 552 Mpa to 758 Mpa, TS 689 Mpa), L80 pipes has been used in oil well establishment, drilling and producin oil and gas industries.
♣ CHEMICAL COMPOSITION
GradeTypeCSiMnPSCrNiMoCu
L801≤0.43≤0.45≤1.90≤0.030≤0.030–≤0.25–≤0.35
9Cr≤0.15≤1.000.30-0.60≤0.020≤0.0108.00-10.00≤0.500.90-1.10≤0.25
13Cr0.15-0.22≤1.000.25-1.00≤0.020≤0.01012.00-14.00≤0.50–≤0.25
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