Nickel alloys were created in the late 1930s. In 1941, Britain produced the first nickel-based alloy called Nimonic 75 (Ni-20Cr-0.4Ti), and later improved it by adding Al to enhance its creep strength, resulting in Nimonic 80 (Ni-20Cr-2.5Ti-1.3Al). The United States, Russia, and China also developed their own nickel-based alloys

An important property of alloy 601 is its resistance to oxidation at temperatures up to 1180℃. It can be used even under severe conditions. Even under severe conditions, such as heating and cooling cycles, 601 can generate a dense oxide film and obtain high resistance to flaking.

Nickel Alloy 625 is a face centered cubic crystal structure. After holding at 650 ℃ for a long enough time, carbon particles and unstable quaternary phase will be precipitated and transformed into stable Ni3 (Nb, Ti) orthorhombic lattice phase. After solution strengthening, the mechanical properties