STEEL quakerchem.com | 1.800.523.7010 SURFACE TREATMENT PRIMECOAT™ Z 838-4 THE SOLUTION CHALLENGES A major North American steel producer of flat rolled, zinc/ zinc alloy coated substrate was using a trivalent chromium, RoHS compliant, passivation product on a horizontal chemcoater. They encountered issues including: » Multiple white rust claims on substrate from their hot dipped galvanize/ galvanneal line » A key stamping custome

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