Green Corrosion on Bronze Fittings

[bostonhatteras]

nibral stands for nickel - bronze - aluminum. nibral is a proprietary name. sometimes this alloy adds manganese for more strength, but at any rate the main element is copper about 70%. all of the true bronzes are at least 80% copper. I cannot find 'red brass' as a generic alloy, it must be a trade name used by one company similar to 'hard' brass that I saw advertised once.

 

[Traveler 45C]

red brass - brass with enough copper to give it a reddish tint; used for plumbing pipe and other brass hardware and in cheap jewelry
http://www.thefreedictionary.com/red+brass

Gunmetal, also known as red brass in the United States,[1] is a type of bronze – an alloy of copper, tin, and zinc.[2] Originally used chiefly for making guns, gunmetal was superseded by steel. Gunmetal is resistant to corrosion from steam and salt water, and is thus suitable for valves, pump parts and steam fittings. http://en.wikipedia.org/wiki/Gunmetal

Red Brass, C230

Chemistry Data :

Copper 84 - 86
Iron 0.05 max
Lead 0.05 max
Remainder Each Zn
Remainder Total Cu + sum of named elements
http://www.suppliersonline.com/propertypages/C23000.asp

 

[bostonhatteras]

interesting chemistry data on red brass, seems unlike most brasses. the wickapedia definition is a bit suspect though as I believe what separates brasses from bronzes is the addition of zinc. nice work.

 

[Traveler 45C]

Red brass, I Googled it.

 

[bostonhatteras]

I went the old fashioned route and checked my personal library.