The Material The material from which the wheels are made

Approximately 97 per cent of the melt consists of aluminium, but also the remaining three per cent of the wrought alloy absolutely contributes to influencing the desired properties of the material for the ideal wheel. In addition to the main component of aluminium, the alloy still in each case contains one per cent magnesium and silicon as well as some other ingredients such as manganese and titanium (which provides a finer grain). The precise composition of this material cocktail of course has a significant influence on the later properties of the wheel and is therefore monitored meticulously.

Pure aluminium

Around 97 per cent of the alloy consists of pure aluminium. The remaining three per cent of the wrought alloy are important for the properties of the material.

Chromium

The master alloy AlCr20 provided with the hard metal chromium improves the recrystallisation resistance. Master alloy means a mixture of aluminium with other substances. In this case, there is a maximum of 0.25 weight per cent chromium, i.e. a very small amount
.

Magnesium

Magnesium, together with pure silicon, leads to a higher strength of the overall alloy. Here the maximum proportion of these materials is 1.2 and 1.3 per cent by weight respectively.

Titanium

These brilliant billets are the master alloy AlTi5B1. It creates a finer grain structure of the total alloy. The proportion of the expensive raw material titanium is only 0.1 per cent by weight.

Silicon

These irregularly shaped chunks are silicon, which is added only to the alloy in conjunction with magnesium. This increases strength. The silicon content is between 0.7 and 1.3 per cent by weight.

Manganese

The addition of 0.4 to 1.0% manganese makes the alloy tougher. Manganese has a positive effect on recrystallisation response.