Alseal 5050

Alseal 5050 is a single-component, chrome-free coating composition formulated for protecting ferrous alloys from both high
temperature heat oxidation and at the same time offer sacrificial (cathodic) protection to the base metal. Because of its
high temperature capabilities, it offers excellent protection when exposed to cyclic high temperature and corrosive salt
environments, continuing to provide sacrificial properties at temperatures to 1150°F. Although an inorganic coating, it
combines thermal stability, excellent adhesion and hardness, along with good flexibility... a property not found in most
inorganic coatings. As mentioned above it offers salt corrosive protection to 1150°F. At about 1200°F. the aluminum
oxidizes to a point where it no longer provides its excellent sacrificial properties, however, it will continue to offer excellent
heat oxidation continuously to 1600°F. and in some cases, depending on metal substrate, has offered heat oxidation
protection to 2200°F.
Tests have been conducted using low carbon steel alloys. There was no loss of weight after several weeks continuous
exposure at 1000°F. After exposure to 5% salt spray for 1000 hours, there was no evidence of corrosion.