Aerospace Engines
6 out of 7 Alloys in the Hot Section of a Jet Engine are Produced by ATI.
We are the first-call partner of every major aerospace manufacturer. Our expertise and experience are relied upon to push propulsion thresholds past previously known physical limits.
Melt: Purity from the Start
Performance starts with what goes into the metal... and what stays out. ATI is the industry leader in high-purity nickel-based superalloys, controlling chemistry and microstructure for longer life and greater durability in the extreme conditions inside a jet engine.
Powder: Performance by the Particle
Powder metallurgy takes materials performance even further. ATI controls chemistry, particle size, cleanliness and density from atomization through Hot Isostatic Press, producing ultra-clean powder alloys with fine, uniform microstructures for greater durability and performance in next-generation jet engine disks.
Forging: We Make It. Then We Forge It.
ATI produces the advanced nickel superalloys for jet engine disks, and has the rare capability to forge them, too. We're the only producer of isothermally forged jet engine disks for all three major engine OEMs, and one of only two integrated U.S. producers forging rotating components from our own nickel superalloys.
Rotating Turbine Disks: High Pressure Compressor
Where pressure builds, materials matter. The high-pressure compressor packs incoming air into a fraction of its original volume before sending it to the combustor. Its disks rotate at tremendous speed while carrying rows of compressor blades, subjecting the material to immense centrifugal forces, rising temperatures and repeated cycles of stress. As engines push for greater efficiency, those demands only increase.
More performance. Same unforgiving physics.
Higher pressure ratios and temperatures can improve engine efficiency—but they also put greater demands on rotating disks. The material must maintain its strength and resist fatigue over thousands of cycles while spinning under tremendous loads.
It's what's inside that counts.
ATI produces the advanced nickel-based superalloys and powder materials engineered for these rotating disks. Precise control of chemistry, cleanliness and microstructure delivers the strength, fatigue resistance and durability needed to extend disk life and push engine performance further.
Rotating Disks: High-Pressure Turbine
This is where things get hot. Really hot. Immediately after combustion, the high-pressure turbine extracts energy from the engine's hottest gas stream. Its disks anchor rows of turbine blades while spinning under enormous centrifugal loads—putting extraordinary demands on materials already operating at elevated temperatures.
Keeping strength when the heat is on.
Heat changes what metals can do. As temperatures rise, maintaining strength becomes harder and resistance to creep, fatigue and crack growth becomes increasingly critical. And because hotter engines can deliver greater efficiency, the material challenge keeps moving higher.
Made for the hottest rotating hardware.
ATI produces advanced nickel-based superalloys—including powder alloys engineered for high-temperature turbine disks—and carries that materials expertise through HIP and isothermal forging. Precise control of chemistry, cleanliness and microstructure creates disks engineered to retain strength and durability at temperature.
Rotating Turbine Disks: Low Pressure Turbine
Turning heat into thrust. Downstream from the engine's hottest section, the low-pressure turbine extracts energy from the expanding hot gases to help drive the fan and compressor system. Its disks hold rows of turbine blades in place while rotating at tremendous speed—putting strength, temperature capability and durability to work every second the engine runs.
Headline: Heat. Force. Repeat.
Low-pressure turbine disks operate under a demanding combination of centrifugal loads, elevated temperatures and repeated thermal and mechanical cycling. Over thousands of flights, the material must maintain its strength while resisting fatigue, creep and crack growth. Research on turbine disks specifically identifies the interaction of centrifugal and thermal stresses, fatigue, creep and environmental effects as central life considerations.
Built for a long life in the hot seat.
ATI produces and forges nickel-based superalloys engineered for the demands of rotating turbine disks. Through precise control of chemistry, cleanliness and microstructure—and advanced powder metallurgy, Hot Isostatic Pressing and forging—we create materials engineered to maintain strength at temperature, resist fatigue and slow crack growth over a long operating life.
