Group 4 Wheels’ are manufactured using AlSi7 primary alloy, then heat-treated, this improves the mechanical properties and is primarily used in motorsport applications. The alloy undergoes a degassing pre-treatment which limits the presence of oxygen, this, in turn, minimizes cavities in the casting.
All wheels are subject to strict controls, such as X-ray inspection and pressure testing to verify the quality of the castings.

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