MIL-DTL-16232 PHOSPHATE COATING

Phosphate coating is used on steel parts to provide corrosion protection, lubricity, or as a pretreatment for further coatings such as paint or powder coating. The finish provided by the phosphate coating will be gray to black in appearance.  Whether on steel, cast iron, or powdered metal, our zinc and manganese phosphate coatings deliver excellent corrosion resistance, prolong the life of organic coatings, provide an excellent base for lubricants, and can be used as a pre-treatment for paint. Zinc phosphate coatings typically serve as a base on steel for dry film lubricants,  metal flake coatings, or lubricating oils. They may also be used for dry lubrication to improve break-in or reduce galling. Manganese phosphate coatings, also known as Parco Lubrite or Parkerizing, are applied to the surface of ferrous substrates to prevent galling and to improve break-in properties.

 

PHOSPHATE COATING APPLICATIONS

Keystone Corporation offers two types of phosphate coatings:

  • Manganese Phosphate (Type M)
    • Produces non-metallic, oil-absorptive coating on iron and steel rearing surfaces
  • Zinc Phosphate (Type Z)
    • Produces micro crystalline coatings which are best for corrosion resistance or subsequent painting

 

SPECIFICATIONS

  • TT-C-490D - For light phosphate
  • MIL-DTL-16232 - For heavy phosphate
  • MIL-STD-171
  • Commercial and customer generated specifications

 

CONTACT KEYSTONE TODAY FOR MORE INFORMATION ABOUT OUR PHOSPHATE COATING

For more than 90 years, Keystone Corporation has assisted customers in completing orders ranging from a few specialized pieces to high volume applications. All finishes are available for both Rack and Barrel plating applications. We maintain superior quality control through the entire finishing process, ensuring top quality Phosphate Coating at an affordable cost for any project. Our experienced staff will provide technical assistance as well as Certificates of Compliance to commercial, government, AMS, ASTM, and MIL specifications. Meeting your manufacturing needs is our top priority at Keystone Corporation. Contact us today to receive a personalized quotation based on your specific requirements.

Plated metal parts