A387 Gr91, T91, 1.4903, 1.4901, P91, P92, F91, F92
A387 Gr91, T91, 1.4903, 1.4901, P91, P92, F91, F92, X10CrMoVNb9-1 and equivalent P91 / T91, F91 are high alloy types, designed to use martensite structure at high temperature. The most common forms of seamless tubes, bars, sheets or forgings are used to produce devices, pipes, boilers and other parts of power equipment operating at temperatures ...