METALGUARD® A81

METALGUARD A81 is a conventional, heavy-duty, fully-formulated and SCA precharged additive package that allows antifreeze producers to make a finished product that meets the most demanding industry specifications, including ASTM D 6210/6211 and RP 329/330 of the Technology and Maintenance Council of the American Trucking Association. METALGUARD A81 contains the initial charge of sup ple men tal cool ant additive, meeting the requirements for pre-charged coolants. No additional SCAs need to be added to the finished coolant. METALGUARD A81 is a top-quality conventional phosphate and amine free formulation.

METALGUARD A81 contains a minimum of 2400 ppm nitrite in antifreeze concentrate (1200 ppm in pre-diluted coolant) which is one of the requirements to meet ASTM D6210. If a combination of nitrite and molybdate is required by the specifi cation for the coolant application we recommend WEBA’s METALGUARD A90.

METALGUARD A81 is a sophisticated, multi component additive system which em ploys synergistic combinations of inhibitors to provide you with the best corrosion protection available for heavy-duty engine cooling systems, whether in vehicles or stationary engines. It is a very durable additive package with a strong reserve alkalinity, and a substantial combination of inorganic acid salts to protect steel, cast iron, aluminum and solder. Copper, brass and other copper alloys are protected by a high level of azoles. METALGUARD A81 is a silicate-free formulation meeting ASTM D4985 and contains antiscalants and dispersants to prevent scaling and fouling
of heat exchange surfaces.

METALGUARD A81 can be blended with either ethylene or propyleneglycol,and can also be used with either virgin or high-quality reclaimed glycol from distillation units, reverse osmosis membranes, and most flocculation/filtration systems. WEBA recommends that you send a sample of any non-virgin glycols that you are considering for use with any of WEBA’s additive packages to a laboratory for testing and forward the results to us. We will help you determine if any pre treat ment will be necessary prior to blending antifreeze to ensure compliance with all required specifications.

Specifications

• ASTM D3306 
• ASTM D4985
• ASTM D6210
• TMC of ATA RP 302A
• TMC of ATA RP329/330 

Nearly all of OEM automotive light-duty ad heavy-duty specifications are patterned after or identical to the ASTM standard specifications given above. For individual OEM specification compliance contact your sales representative. Note that the ASTM specifications listed include the key performance tests (ASTM D1384, D4340, D1881, D2570, D2809).