Alloy HR-120 alloy is a solid-solution-strengthened heat-resistant alloy that provides excellent strength at elevated temperature, combined with resistance to carburizing and sulfidizing environments. Its oxidation resistance is comparable to other widely used Fe-Ni-Cr materials, such as alloys 330 and 800H, but its strength at temperatures up to 2000 deg. F (1095 deg. C) is significantly higher.