Parkerizing or Phosphating is a Metal Finish that really gained in popularity during WW2 when the US Government was looking to replace the typical blued finish on most small arms with a Rust Resistant and Anti Reflective Finish that would be both Durable and Abrasion Resistant and hold up in all weather extremes, for this they chose Parkerizing or Phosphating.
The Parkerizing technique is a Phosphate etching process that produces a Hard Matte or Dull finish that is both very Durable and Anti Reflective and with excellent oil holding properties.
The most commonly types used are the original WW2 type, known as Grey Oxide and the latter Black Manganese, still in use by many Military and Civilian Manufacturers in many countries on a wide variety of products.
Beware of sellers touting, New Super One Kit does it all, or Regular-Heavy Duty One Bottle Products that will give you any color from Grey to Black, Grey Oxide and Black Manganese are two completely different Products, think about this.
Our Products are Highly Concentrated and mixed at a normal ratio of 3 oz per gallon of Distilled Water, which works out to over 5 gallons of solution from our 16 oz Bottles. Check out the others, they dont come close as you are paying for a few ounces of Concentrate diluted in a Quart or Gallon of Water, it may look and sound bigger but are you really getting what you pay for, think about this.
The standard Grey Oxide Parkerizing may range from light grey to a darker grey depending on the type and hardness of the metal it is being applied to, whereas the Black Manganese Parkerizing will usually always be in the Charcoal Black category.
Either type of Parkerizing Finishes will offer much more protection from harsh weather than bluing, and is very simple to apply and maintain.
Parkerizing is much easier to use than bluing because as it is a Matte Finish the parts or items you want to Parkerize do not have to be polished, they can be acid dipped, sanded, bead blasted or sand blasted. In fact a lot nicks and scratches that would show up on a blued item would not even be seen after Parkerizing.
Parkerizing is an immersion process requiring the solution to be heated to approximately 190 + degrees and the dipping time can range from 5-45 Minutes or so, depending on the hardness of the metal and the desired Finish.
Actually the only equipment required is a Stainless Steel Tank or Pot and a Heat source and an optional Thermometer.
It can be used on any type of Mild or Gun steel, it is not for use on Stainless or any types of Aluminum.
Parkerizing is sometimes refered to as black oxide, however this is a misnomer as black oxide is nothing more than a type of black bluing which does not offer the protection and corrosion resistance of a parkerized part