Sulfuric acid electrolytes produce the clearest oxides and are used for most clear work and practically all decorative dyed or two step electrolytic colored architectural work. Sulfuricacid anodic coatings tend to be thicker, harder and more wear resistant than the other anodic coatings in the slide.The sulfuric acid process tends to be less expensive to set up and operate. Disadvantages include lower corrosion resistance vs. chromic acid anodized coatings, a corrosiveelectrolyte (causing corrosion in lapped joints) and poorer fatigue properties.Boric acid anodic films are used only in thin film (aka barrier films) applications such as capacitor production, as the electrolyte has little solvency for the anodic coating.Phosphoric acid anodic coatings have a high level of porosity, yielding excellent properties for adhesive bonding.Oxalic acid anodic films can be thick, highly corrosion resistant, and wear resistant, but the process is expensive, difficult to control, and a health hazard. It is mainly used tosuccessfully anodize high magnesium aluminum alloys (>7% Mg).