wrote:

"Milton Waddams" wrote
Which is better for general maritime hardware such as hinges, clasps,
cleats, etc: Brass or Bronze?What is naval bronze? Thanks, as always,


Brass is terrible for anything on a boat. The zinc electrolyzes ouot
of it, leaving huge corrosion stains and the materiel turns pink &
brittle. Not that there's anything wrong with turning pink, but
brittle is not nice.

"Russell Johnson" wrote:
Milton,

You can search your materials he

http://www.principalmetals.com/properties/step1.asp


Cool link, thanks

Naval bronze is a very strong copper alloy which is great for deck fittings,
hinges and the like. It has a low coefficient of friction and is long
wearing. It comes in leaded and unleaded versions.

Are you sure? I thought it all has lead in it.

Leaded, also known as C485 or C48500 excellent stuff for machining, I
think the lead acts as lubricant and stops your cutter from galling and
sticking. Also terrible stuff to weld and braze, solders ok though. Also
used for bearings. Lead content 1.3-2.2%

Unleaded, AKA C464, C46400, CZ112, or CZ113, doesnt machine well, but is
great for welding and brazing and forging. Max lead content is about
0.2%.

Cheers
Marty