Zinc Coated Brake Rotors

Wagner s budget brake rotors are coated for corrosion and rust.

Zinc coated brake rotors.

Rotor corrosion comparison test result is finally here. Thermic black coated discs are being phased in. However due to certain castings the zinc coating may not adhere to small areas of some rotors. These rotors are made from aluminum and have a zinc coating to protect against rust and extend their operating window.

Brake rotors are regularly exposed to water salt and other corrosive elements. The cross drilled brake rotors are sold in pairs and come zinc coated in either black or silver to help prevent rusting and give you a performance race look. Numerous industries now actually make use of zinc electroplating in order to further enhance the potential of their products. One way was to apply a coating to prevent rust.

This leaves you with a very ugly looking rotor. Each performance brake rotor is immersed in different solution tanks during the coating process. After over 3 months of driving the vehicle outside doing a spray test with 5 nacl solution or 5 s. The coating that remains will continue to protect the hub vanes on vented discs and rotor edges.

That s why the coating on acdelco silver advantage coated brake rotors contains zinc and aluminum which naturally attract corrosive reactions more than iron helping to protect the rotor underneath. Outside these sources where castings or finished rotors have to be bought in to complement the range. An example of course is in the automotive industry. For a more in depth look at coated brake rotors check out the video below.

As stocks rotate you will no longer receive zinc coated discs you will receive black ones. Naturally companies started looking at ways to mitigate rusting of the rotors. The final result is a thick protective coating that will help prevent rusting and give you a great custom look. These rotors are guaranteed to fit original equipment manufacturer specs without modification and are machined balanced with a double disk smooth surface ground finish to reduce noise.

As brake rotors are made of iron they naturally rust and when exposed to minerals such as salt the rusting oxidization tends to speed up.