STEEL FOR AEROSPACE AND DEFENSE
Need steel for aerospace bearings, power transmissions, and other flight-critical components that can resist corrosion and maintain high performance even under harsh temperatures? We stock specialty steel in a variety of high-quality grades to meet the strict demands of aerospace and defense manufacturing.
Our Featured Aerospace Steels
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M50 |
BG-42Ⓡ |
M50NiL |
Steel in Aerospace and Aviation
Aerospace-grade steel is highly specialized to perform in demanding environments. These steels must be alloyed and heat treated to balance desired weight parameters with the necessary strength, durability, corrosion-resistant, and temperature-resistant characteristics to assure safe, reliable function in aircraft and spacecraft.
As a result, there are strict regulatory standards that these materials must meet during quality control testing. Because standards are so strict, finding qualified mills and suppliers for aerospace-grade steels can be a challenge, especially when supply lines are tight. Major engine manufacturers qualify steel mills that meet their quality criteria — Sullivan Steel, for example, is an authorized distributor under Pratt & Whitney’s LCS certification.
Applications for Aerospace Steel Alloys
Flight-critical components must be made with steels that won’t fail under extreme conditions. Engines typically require steel made to withstand high temperatures, with high fatigue and high hot hardness, while wing flaps and actuation systems need to be manufactured with steel resistant to outside elements. For non-flight critical components like hinges, manufacturers may be able to choose from a greater variety of air-melted steels.
Aerospace Steel at Sullivan
Aerospace has been at the center of Sullivan Steel’s mission since our start in 1980 with aircraft-quality bearing materials. Since then, we’ve worked with major aircraft parts manufacturers to supply steel for many critical applications in the aerospace and defense markets, including:
- Bearings
- Ball Screws
- Helicopter Shafts
- Landing Gear Components
- Hydraulic Parts
- Gas Turbine Parts
- Military Weaponry
Our Aerospace Grades
All of the steel grades we carry are suited for use in at least some aerospace applications. If needed, we can offer both air-melted and double-melted grades.
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| M50 VAR and VIM-VAR | Aircraft engine bearings, helicopter rotor bearings, gas turbines; high stress, high temperature environments |
| BG-42Ⓡ | Critical bearings and gas turbines; high temperature, high corrosion environments |
| M50NiL | Aircraft bearings and gears; high temperature, high stress environments |
| XD15NWⓇ | Bearings and ball and roller screws in highly corrosive environments; high corrosion, high stress environments |
| XD16NⓇ | Gears, valves, injection systems; high stress, high temperature, high corrosion environments |
| 52100 VAR and VIM-VAR | Aircraft bearings |
| 440C | Bearings, ball screws; high stress, moderately corrosive environments |
| 4340 | Aerospace gears, shafts, and other components; high stress environments |
| CX13VDW | Stainless carburizing grade for aerospace ballscrew and rod end applications |
| GKHⓇW | Deep nitriding grade for critical mechanical components |
| GKPⓇYW | Deep nitriding grade for shafts and heavy loaded gears |
| Nitriding 135M | Gears; high stress environments |
| 9310 | Gears and heavy-duty gear shafts |
| 8620 | Carburizing bearing and gear steel for aerospace and industrial applications |
| NC310YW | High strength carburizing grade for shafts and gears |
Have questions about finding the proper steel for your particular aerospace application? Our steel experts can help — drop us a message using our Live Chat feature or visit our contact page.
