Keystone Corporation is qualified to meet your phosphate coating needs. Our facilities are capable of handling large and small parts with our various racks and barrels. Call today to find out how we can help you with your phosphate coating needs!

Phosphate Coatings per MIL-DTL-16232 

The two most common phosphate coatings are Zinc Phosphate and Manganese Phosphate.  Phosphate Coatings  are conversion coatings that produce a uniform, adherent, non-metallic, non-reflective, crystalline, water insoluble finish on iron or steel. These adhesive coatings provide an excellent base for painting or the application of lubricants. Coating thickness for zinc phosphate is between .0002 and .0006 inches and manganese phosphate coatings are typically between .0002 and .0004 inches thick.