1984-02-01

Critical Process Parameters Affecting Zincrometal R Performance 840209

A laboratory study aimed at improving the corrosion resistance of Zincrometal has shown that excellent Zincrometal performance in laboratory corrosion tests can be obtained by achieving a trivalent (Cr+3) to hexavalent (Cr+6) Dacromet chromium ratio of at least 15. Increasing thermal energy input during curing increases the Cr+3/Cr+6 ratio and improves corrosion resistance in laboratory tests. Increasing curing energy input in production may be a viable approach to improve Zincrometal performance, provided that steels not susceptible to strain aging are used.

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