Avoid the risk of premature failure...
Use Brush Wellman's Patented Omega Alloy 25 AMS 4533 and AMS 4535 for your high performance aircraft bearings and bushings
 

Figure 1: Duplex grain structure of standard hot-worked copper beryllium.
Figure 2: Uniform grain structure of Brush Wellman's Omega-Processed copper beryllium.
 
Brush Wellman ells reliability wit hits Omega-Processed copper beryllium. The fine microstructure of Omega-Processed copper beryllium results from our patented thermo mechanical processing of cast copper beryllium billets. Standard hot-working of copper beryllium usually leaves large regions of metal as unrecrystallized grains shown in Figure 1. These large grains sever to localize the stress in the material, resulting in lower fatigue and fracture resistance. The fully recrystallized, fine, uniform grains in Omega-Processed copper beryllium, shown in in Figure 2, better distribute the stresses in the metal, resulting in improved ductility, fracture resistance and fatigue strength.

The benefits of Omega-Processing are most clearly seen by looking at its affect on the elongation and average grain size. As shown in Figure 3, Omega-Processed copper beryllium has markedly improved elongation. This results from its finer and more uniform grain structure, as is shown in Figure 4. Repeatedly hot-working copper beryllium through conventional means can break the average grain size down to the level achieved by Omega-Processing; however, one cannot be sure that the metal is right. It is still possible there are a few isolated large, unrecrystallized grains. Omega-Processing converts the cast structure in the entire volume in one "violent" mechanical process. Omega-Processing gets it right the first time.
Figure 3: Elongation improvements in Omega copper beryllium.
 
Figure 4: Grain size improvement in Omega material.

Omega-Processed copper beryllium exceeds all the requirements of AMS 4533 and AMS 4535.
 
 


Toll-Free: 1-800-552-8729 | Tel: (631) 434-3400 | Fax: (631) 434-3409
Busby Metals, Inc | 55 Davids Drive | Hauppauge, NY 11788

Busby Metals, Inc. is a stocking distributor of brass, bronze, copper, beryllium copper & aluminum bus conductors. Inventory includes rod, bar, sheet, strip, plate, tube, pipe, wire, castings & forgings. specialty alloys available from stock include: aluminum, naval, tobin, commercial, manganese, phosphor & silicon bronzes; beryllium, tellurium, leaded, zirconium, chromium, ETP & oxygen free coppers; free cutting brass; nickel silver; copper nickel. International specifications. Custom shapes. Metric sizes. Metal processing performed. Accredited ISO 9000 and MIL-I-45208A quality system. Chemical & physical test reports available. Technical support provided.