For the use of aluminum substrates for LED lighting, there are many processes, such as tin spraying, gold sinking, silver sinking, gold plating, and silver plating. The most common is tin spraying (with lead and lead-free). The following is a silver plated aluminum substrate:

Silver plating on aluminum substrate is one of the technology of aluminum substrate. It is to electroplating a layer of silver on the surface of the raw material of aluminum substrate, which can better promote the conduction and effect of line. Silver plating on the surface of aluminum is the mainstream technology in the market and also a trend of the development of aluminum substrate.

But the silver plated aluminum substrate has a disadvantage, very easy to oxidize, such as unpackaged treatment, let the silver coating bare in the air; direct contact with people; long unused, the storage environment is not required to be easy to oxygen. On the other hand, the price of silver plating is relatively complicated, and the process is more complicated, so the application is not widespread in the market at present.