... Selection will depend upon design, service conditions, mechanical properties, and high-temperature characteristics.This specification covers seamless ferritic alloy ... material shall conform to chemical composition, tensile property, and hardness requirements. Each length of pipe shall be ... 0.001-0.006Ti 0.01 maxZr 0.01 maxMechanical Properties Grade P11, P22, P5, P9Grade P91Grade P92Tensile strength ...