Nimonic 75 Alloy Heat Corrosion Resistance For Gas Turbine Engineering

NIMONIC 75 is an 80/20 nickel-chromium alloy with controlled additions of titanium and carbon. First
introduced in the 1940s for turbine blades in the prototype Whittle jet engines, it is now mostly used for
sheet applications calling for oxidation and scaling resistance coupled with medium strength at high
operating temperatures. It is still used in gas turbine engineering and also for industrial thermal processing,
furnace components and heat-treatment equipment. It is readily fabricated and welded.

Chemical composition

Advantages

•  Good corrosion resistance
•  Good heat resistance
•  High temperature static applications

Applications

•  Sheet applications calling for oxidation and scaling resistance coupled with medium strength at high operating temperatures
•  Gas turbine engineering
•  Industrial thermal processing, furnace components and heat-treatment equipment

Heat-Treatment
For bar 30-60 minutes at 1050°C (1920°F) followed by air cooling.
For sheet 5-10 minutes at 1050°C (1920°F) followed by air cooling or, before welding, 5-10 min/1050°C
(1920°F)/AC + an optional 10 min/1050°C (1920°F)/AC.

Forms of supply

Bar, wire, rod, forging, plate, strip, sheet, pipe