Nimonic 75 is a Nickel-Chromium alloy with good corrosion and heat resistance. Nimonic 75 is an 80/20 nickel-chromium alloy containing titanium and carbon as additives. Nimonic 75 are primarily composed of nickel and chromium.
Nimonic 75 fasteners have good mechanical properties and oxidation resistance at high temperatures to 1200°F (650°C). Comparable to Inconel 600, Nimonic 75 bolts are primarily used when oxidation and scaling resistance are required in high temperature conditions.