[1% manganesium.54% copper and 45% nickel]
[layer of karat gold heat process added to base metal]
Rolled Gold Plate
[plate of karat gold heat added to base metal, then rolled through a rolling mill to desired thickness. then cases stamped from this RGP. can be one side or two sides.
karat Gold layered through electric plating process
92.5% Silver 7.5% copper
Numeral Grade Silver
800 silver is 80% silver 20% copper
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.