The RCV Performance front and rear wheel hubs are constructed of 4340 steel. This provides maximum strength and minimal strength degradation due to fatigue. Not only was a great deal of FEA testing done, but a test stand was developed to apply a constant cyclical load to verify fatigue would not be a problem over the life of an FSAE car.
For more info check out www.rcvperformance.com or check out the downloads below.
RCV Performance Brochure - fsae_brochure.pdf
Front Wheel Hub Housing - D5116.step
Rear Wheel Hub Housing - D5580.step