ASTM B861 Gr H refers to the “H” grade titanium seamless pipe covered under the ASTM B861 specification for titanium and titanium alloy pipes used in corrosion-resistant and high-temperature applications. The H designation indicates a higher guaranteed minimum tensile strength compared to the standard numeric grade while maintaining the same chemical composition. These H grades (such as 2H, 7H, 16H, and 26H) are primarily intended for pressure vessel and high-pressure piping systems where improved mechanical strength is required.
ASTM B861 pipes are manufactured through seamless processes such as hot working, extrusion, or cold working to ensure a uniform structure and excellent reliability in demanding service conditions. Titanium pipes produced under this specification offer exceptional corrosion resistance, high strength-to-weight ratio, and long service life, making them ideal for critical industrial environments.