C1-C5 are classifications used to describe the level of corrosion resistance required for aggressive environments and applications. The company's latest test results prove that its sustainable corrosion inhibitors can reach C5 levels of heavy metal and chromate-free corrosion protection in coatings.
NACORR 1389 from King Industries is a liquid corrosion inhibitor that imparts improved corrosion resistance and water resistance to both solventborne and waterborne coatings. NACORR 1389 can be used in both air-dry and thermoset systems.