There is a small fee for samples shipped in the continental U.S. This can range from $10-$75.
Products shipped outside the continental U.S. can be subject to certain restrictions. Freight charges may range from $75-$300.
Copper/Brass/Bronze/White Bronze
EPi has a liquid oxidizer package used to achieve the black oxide finish on copper alloys.
Black Oxide for Copper/Brass/Bronze/White Bronze