We often hear people refer to anodizing as a painted or plated finish, that is not true. Anodizing is an electrochemical process that increases the thickness of a natural oxide layer on the aluminums surface. It is sometimes referred to the “beauty of corrosion”. Aluminum oxides naturally in the elements but we speed up the corrosion process to make this oxide layer. Aluminum oxide is rated 9 out of 10 on the Mohr’s scale, making it almost as strong as diamonds, so it won’t chip or break.
To create this aluminum oxide layer, the aluminum is placed in an electrolyte bath. This creates a very porous anodic layer that can be dyed and sealed. The thickness of the oxide later is about .0003 thick and similar in structure to gemstones like sapphire. This oxide layer produces excellent wear resistance properties, low thermal expansion, high temperature stability and high corrosion endurance.
Due to all the fantastic properties and beautiful colors, anodized aluminum is the perfect finish for our pipes.