Rust Blue brand/solution?

chuck17 · 03-21-2009, 08:36 PM

I am not a chemist, but this is my understanding. Parkerizing was a brand name for a conversion process of the surface of the metal using zinc phosphate or manganese phosphate. The name parkerizing has passed into the language, like kleenex or band-aid. The zinc phosphate parkerized surface provides a gray surface and a finer crystalline structure, which is supposed to be a better surface for GunKote and other brands of spray-on finishes to adhere to. The manganese phosphate surface is a darker charcoal gray to black finish with a thicker crystalline structure. Many military weapons have been parkerized as it is an excellent finish to hold oil on the surface of the metal. Parkerizing is an easy finish to apply, but if you try it make sure to plug the bore. You can buy it from Brownells or Midway.

03-21-2009, 08:36 PM	#20
chuck17 User Join Date: Jun 2003 Location: Fla Posts: 27 Thanks: 0 Thanked 4 Times in 2 Posts	I am not a chemist, but this is my understanding. Parkerizing was a brand name for a conversion process of the surface of the metal using zinc phosphate or manganese phosphate. The name parkerizing has passed into the language, like kleenex or band-aid. The zinc phosphate parkerized surface provides a gray surface and a finer crystalline structure, which is supposed to be a better surface for GunKote and other brands of spray-on finishes to adhere to. The manganese phosphate surface is a darker charcoal gray to black finish with a thicker crystalline structure. Many military weapons have been parkerized as it is an excellent finish to hold oil on the surface of the metal. Parkerizing is an easy finish to apply, but if you try it make sure to plug the bore. You can buy it from Brownells or Midway.