Nistelle™ 625 Alloy

Nistelle nickel-based alloys are designed primarily for high corrosion resistance. They have excellent high-temperature strength, resistance to oxidizing and/or reducing acids (depending on the grade) and are readily machinable.

Nistelle 625 is a nickel-chromium-molybdenum alloy with an addition of niobium that acts with the molybdenum to stiffen the alloy’s matrix, thereby providing high strength without a strengthening heat treatment. The alloy resists a wide range of severely corrosive environments and is especially resistant to pitting and crevice corrosion. It has excellent high-temperature oxidation and corrosion properties. Nistelle 625 is readily manufactured and fabricated by common industrial practices and has excellent weld qualities.

Nistelle 625 has been widely used in a range of high-temperature aerospace, chemical process, and power industry applications. As a low-temperature corrosion-resistant material, it has been used in the chemical industry, marine industry and in pollution-control equipment. It is widely specified for use in seawater and contaminated seawater environments.