Keep in mind that not every PCB contains all the layers listed â the need for different layer types depends on the specifics of your design. Single layer boards typically include: a mechanical layer, a keep out layer, a routing layer, an overlay layer, a solder mask layer and a solder paste layer.
An austenitic (300 series) stainless steel will outlast both aluminum and steel exposed to rain or salt spray. Steel without a protective coating will do poorly in both environments but if properly plated or painted, may last a long time. The aluminum alloys likely to be found in many consumer products may develop âlawn chair diseaseâ exposed to at least urban rain and condensation but possibly also in cleaner environments as well (up to you to test).
Re: Does aluminum contain IRON(fe). They can not be directly mixed together and no current aluminum you can buy has iron in it. You can mix Aluminum with Iron-oxide and sulfur to create thermite.The sulfur holds the two together, however at no point are they actually bonded together. can't give you that answer, but at that point the new alloy would be neither aluminum or iron, it would be something else. From what I have read some car manufactures do use some chassis and engine parts that contain some form of magnesium hybrid but I'm not sure the process behind that.