Compressor Wheel Materials

In Simple Terms

F1 engines can use compressor wheels made from aluminum-based alloy with up to 2.5% lithium content, or titanium wheels without any lithium restrictions. This rule controls the materials used in the turbocharger to maintain competitive balance while allowing some material flexibility.

• Compressor wheels must be aluminum-based alloy or titanium
• Aluminum-based alloys are limited to maximum 2.5% lithium content
• Titanium compressor wheels are exempt from lithium restrictions
• These regulations apply to turbocharger components in F1 power units