Yellow Zinc Plating, Trivalent Passivation & Hexavalent Chromate

Topcoats or Torque ‘N’ Tension coatings can be applied to both trivalent and hexavalent yellow products.

How do we meet customer’s expectations?

Great Lakes Metal Finishing, Inc strives to give our customers exactly what their parts need and even exceed their expectations. The majority of the work performed at GLMF is plated to a customer’s individual zinc or zinc nickel plating specifications. No matter the plating thickness, bake cycle, chromate, or salt spray requirement, GLMF will deliver exactly what is required to meet your specifications. If you do not know what is needed for your part, we will collaborate with you to find the appropriate zinc nickel or zinc electroplating that is necessary.

How do we ensure yellow zinc plating specifications are met?

GLMF performs on-site daily testing of our cleaners, acids, plating tanks, passivates, and chromates to ensure they are all in compliance with ideal operating parameters. To ensure your parts are getting the proper plating deposit for every job, our operators complete online thickness checks using one of our x-ray machines. In addition to online checks, all parts pass through our quality department for a final inspection of appearance and thickness. This final step helps to ensure proper plating specifications were met.

Find Your Industry:

Our automated rack and barrel line capabilities – combined with our proprietary chemistry – make our yellow trivalent passivate and yellow hexavalent chromate conversion coating optimal for industries including, but not limited to:

• Hardware & Fastener Production
  • Bolts
  • Contactors
  • Consumer products
  • Mechanical parts
  • Nuts

How long does it take to turnaround parts?

Generally, Great Lakes Metal Finishing can turn your parts around in 48–72 hours. If a bake or multiple bakes are required, we will need approximately 72–96 hours to have your parts ready.