METALGUARD A81
Antifreeze Inhibitor Package, Fully-Formulated, Heavy-Duty and Precharged with MBT and high Nitrite for use with Ethylene & Propylene Glycol

Product Description and Applications
METALGUARD A81 is a heavy-duty, fully-formulated and precharged additive package that allows antifreeze producers to make a finished product that meets the most demanding industry specifications, including ASTM D6210/6211 and RP 329/330 of the Technology and Maintenance Council of the American Trucking Association. As a precharged additive package, METALGUARD A81 contains the initial charge of supplemental coolant additive, meeting the requirements in the cited specifications. In other words it is available with either a minimum of 2400 ppm nitrite or optionally a nitrite/molybdate formulation with aminimum of 1560 ppm nitrite plus molybdate (with both at or above 600 ppm) in antifreeze concentrate. The cost of the nitrite/molybdate formulation varies widely with the cost of molybdenum metal and its derivative sodium molybdate (METALGUARD A81M)

METALGUARD A81 is a sophisticated, multi component additive system which employs 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. A proprietary combination of substituted tolytriazoles and phosphonocarboxylates controls corrosion of steel, cast iron and aluminum . The soft or yellow metals (copper, brass and solder) are protected by a mercaptobenzothiazole/tolytriazole system. METALGUARD A81 also contains antiscalants and dispersants to prevent inorganic salt scaling on heat exchange surfaces and organic fouling due to minor oil leakage into the cooling system.

Compliance with the many dissimilar antifreeze specifications in today’s market also make it important to know what your additive package does not contain. Many European automobile warranties require that non-phosphate antifreezes be used; for many Japanese vehicle warranties, silicate-containing antifreezes are not allowed. Many U.S. vehicle and engine producers do not allow amine-containing antifreezes to be used in their cooling systems. METALGUARD A81 was designed with all of these considerations in mind; it contains no silicates, phosphates, amines or nitrates.

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

METALGUARD A81 is formulated to meet these Industry standards:

• ASTM D 3306
• ASTM D 4985
• ASTM D 6210/11
• TMC of ATA RP329/338
• TMC of ATA RP302A

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). See below for making specification claims.

Ordering Information:

Product Code:	METALGUARD A81
Quantity options (US)	55 gal. Drum, 275 gal. Tote, Bulk
Quantity options (outside US)	205 L Drum, 1000 L Tote, Bulk
Dye	Yes
Dye Options (Color)	Green or custom dye (see chart)

 

---

Version date: December 5, 2011
Supersedes: July 14, 2011