WL Incoloy 901

Nimonic 901 is an austenitic age-hardening alloy based on Fe-43Ni-12Cr, with titanium, aluminum and equal strengthening elements added. It also contains trace amounts of boron and lower carbon. It is metastable γ"[Ni3(Ti, Al)] phase dispersion strengthening, and trace amounts of aluminum can inhibit the transformation of γ" to eta-Ni3Ti phase. The alloy has high yield strength and durable strength below 650°C, good oxidation resistance below 760°C, and stable structure for long-term use. This alloy is a relatively mature alloy developed in the early stage and is widely used in the manufacture of rotating disk parts (turbine disk, compressor disk, journal, etc.), static structural parts, turbines of aviation and ground gas turbine engines operating below 650°C, Outer rings and fasteners and other parts.

Alloy 901 is commonly used for gas turbine engine discs, shafts, rings, casings and seals

Alloy 901 has high yield strength and creep resistance at temperatures to about 1110° F (600° C). As Alloy 901 has a substantial iron content it enables alloy 901 to combine strength with good forging characteristics.