With the generic wire brush you see on the market, they are generally coated steel, however we at Victory Hardware caters to many special application. And if you go into depth on there products, there is actually much more different material of wire brush for many different application. It range for non sparking wire brushes, for very sensitive application, to stainless steel, and abrasive filament wire brushes.
Take some time to take a look at the infographic below from Lessman to understand more about wire brushes and find out which one fits your application.
Still not sure? Rest assured, you can always reach out to our product specialist and we will be able to assist you.