C90

API controlled yield strength grade generally for use in sour condensate wells. Extensive hardness testing is required along with SSCC testing per NACE Standard TM-0177-Method A. The minimum threshold stress required is 80 percent of specified minimum yield strength. 

Available in casing dimensions of 114.3 mm (4.5") to 406.4 mm (16")

Available in tubing dimensions of 26.7 mm (1.05") to 114.3 mm (4.5")

Product Group: 
OCTG and Linepipe

Chemical Composition

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min - - 0.250 - - - - - - - - -
Max 0.350 1.200 0.850 1.500 0.990 - - 0.020 0.010 - - -

Mechanical Properties

Tensile Strength 689 MPa min 100,000 psi min
Yield Strength 621 MPa min 724 MPa max
  90,000 psi min 105,000 psi max
Total Elongation Under Load 0.500 % -
Hardness 25 Max HRC 255 Max HBW