Grade T95, specified in API 5CT, is a high-strength low-alloy (HSLA) steel engineered for sour service environments. It features a minimum yield strength of 655 MPa (95 ksi), combining high collapse resistance with resistance to sulfide stress corrosion cracking (SSC).
Utilizing a Cr-Mo alloy system, this grade achieves an optimal balance of strength and toughness through:
Precise composition control of alloying elements
Quenching and tempering (Q&T) heat treatment
Designed for hydrocarbon production wells containing corrosive agents such as H₂S and CO₂, T95 undergoes rigorous quality verification including:
Ultrasonic Testing (UT)
Eddy Current Testing (ET)
Hydrostatic testing
to ensure defect-free tubular bodies.
The grade complies with NACE MR0175/ISO 15156 sour service performance requirements.
Specification
