13 Chrome L80, UNS S42000, is a quenched and tempered martensitic stainless steel used for corrosion resistance in sweet (CO2) and mildly sour (H2S) environments up to 300°F. Commonly used as downhole tubular components, packers, and other subsurface equipment, it is included in API 5CT as Group 2, Grade L80, Type 13Cr. Its controlled yield strength and hardness comply with NACE MR0175. This grade is best suited for mildly corrosive conditions as pH, chlorides, temperature, and H2S may limit its use. NACE MR0175/ISO15156 Table A.19 provides a recommended limit of 1.5 psi partial pressure H2S with pH ≥3.5. An integral flush connection designed with robustness and mechanical properties apt to high pressure production and drilling liners applications, lower sections of long strings and horizontal / extended reach wells in slim-hole applications. Reliable and high performance typical of Wedge™ Series 500 and metal-to-metal seal extending its use to gas-tight applications.
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