The terms Brass and Bronze are highly imprecise, which do little to describe a material's properties, beyond the very basic and incomplete
Both Brass & Bronze are “Copper Alloys”.
"Brass" is Copper and Zinc.
"Bronze" is Copper and Tin (Or not
zinc or nickel).
There are around 370 commercial
compositions for copper alloys*. All copper alloys resist corrosion
by fresh water
. Copper nickels, aluminum
brass, and aluminum
bronzes provide superior resistance to saltwater corrosion
* See the ASTM Standard Designation for Wrought and Cast Copper and Copper Alloys:
Michigan Wheel Corporation
typically uses ”Manganese Bronze Michalloy K”*
, for it’s sailboat propellers; although “NiBrAl Michalloy XX” (Nickel, Bronze, Aluminum) material is also available.
* ‘Michalloy K’ is a proprietary alloy, for which I can find no definitive information.
1501 Buchanan Avenue SW, Grand Rapids, MI 49507
: (616) 452-6941
Fax: (616) 247-0227
E-mail (For General Information): firstname.lastname@example.org
Dealer locator: http://www.miwheel.com/MIWheel/Deale...or/default.asp