JSM said:This is confusing, I've read many and one says bluing is better against corrosion, the other says parkerizing and another says matte. I honestly don't know how I will treat this gun, I do plan on buying a plastic case to put it in the same time I buy it. I just know for a while I would keep up with it but after a while I might just do it less and less and less and than end up not doing it at all.
Parkerizing, bonderizing, phosphating, or phosphatizing is a method of protecting a steel surface from corrosion and increasing its resistance to wear through the application of an electrochemical phosphate conversion coating. Parkerizing is usually considered to be an improved zinc or manganese phosphating process, and not to be an improved iron phosphating process, although some use the term parkerizing as a generic term for applying phosphating (or phosphatizing) coatings that does include the iron phosphating process.
Parkerizing is commonly used on firearms as a more effective alternative to bluing, which is another electrochemical conversion coating that was developed earlier. It's also used extensively on automobiles to protect unfinished metal parts from corrosion.
The Parkerizing process cannot be used on non-ferrous metals such as aluminum, brass, or copper. It similarly cannot be applied to steels containing a large amount of nickel, or on stainless steel. Passivation can be used for protecting other metals.
Bluing is a passivation process in which steel is partially protected against rust, and is named after the blue-black appearance of the resulting protective finish. True gun bluing is an electrochemical conversion coating resulting from an oxidizing chemical reaction with iron on the surface selectively forming magnetite (Fe3O4), the black oxide of iron. Black oxide provides minimal protection against corrosion, unless also treated with a water-displacing oil to reduce wetting and galvanic action. A distinction can be made between traditional bluing and some other more modern black oxide coatings, although bluing is a subset of black oxide coatings.
In comparison, rust, the red oxide of iron (Fe2O3), undergoes an extremely large volume change upon hydration; as a result, the oxide easily flakes off causing the typical reddish rusting away of iron. "Cold", "Hot", "Rust Blue" and "Fume Blue" are oxidizing processes simply referred to as bluing.
"Cold" bluing is generally a selenium dioxide based compound that colors steel black, or more often a very dark gray. It is a difficult product to apply evenly, offers minimal protection and is generally best used for small fast repair jobs and touch-ups.
The "Hot" process is an alkali salt solution, referred to as "Traditional Caustic Black", that is typically done at an elevated temperature, 275 to 310 °F (135 to 154 °C). This method was adopted by larger firearm companies for large scale, more economical bluing. It does provide good rust resistance which is improved with the use of oil.
"Rust Bluing" and "Fume Bluing" provide the best rust and corrosion resistance as the process continually converts any metal that is capable of rusting into magnetite (Fe3O4). Treating with an oiled coating enhances the protection offered by the bluing. This process is also the only process safely used to re-blue vintage shotguns. Many double barreled shotguns are silver brazed together and many of the parts are attached by that method also. The higher temperatures of the other processes as well as their caustic nature can weaken the brazed joints and make the gun hazardous to use.[citation needed]
Bluing can also be done in a furnace, for example for a sword or other item traditionally made by a blacksmith or specialist such as a weaponsmith. Blacksmith products to this day may occasionally be found made from blued steel by traditional craftsmen in cultures and segments of society who use that technology either by necessity or choice.[1]
John A. said:Not sure where you're getting your info, but bluing is corrosion. Or probably could be described better as chemically controlled oxidation.
park is an electro-chemical metal treatment.
Blue is typically more glossy.
Parkerization is generally more matte/dull appearance.
You really should keep both oiled/preserved regardless of which you have.
Edit:
Didn't mean to copycat your answer Gunny. We were replying at the same time.
JSM said:I read this, just got me confused plus what other forums said and what they said.. .hurts my brain. lol
http://madogre.com/?page_id=1169
JSM said:So if I read whatever I read correctly, matte is still a bluing process but it just has a matte look and feel. If I understand what someone else said correctly is that since matte has nooks and cranies which can retain moisture and than make it easier to rust vs just plain bluing.
JSM said:I'm just going to forget all the stuff I read before ya'lls explanation and just stick to what ya'll posted. I know matte paint but I don't know anything about the process it takes to blue and I could swear I saw someone say something about matte bluing and since I don't know about the bluing process it.... I don't know I need to take a break from the internet. lol