"Eric R Snow" wrote in message
...
On Sat, 30 Apr 2005 00:00:26 GMT, "David" wrote:

How is the weight?
Is it closer to Aluminium or bronze.
Any use suggestions or observations appreciated.
Greetings David,
Weight much closer to bronze. Harder to machine than 660 bronze, which
is probably what you are thinking of when you say bronze if you are
making bearings. With regular old half hard brass as a comparison with
a machinability rating of 100, aluminum bronze is rated 60, and
aluminum nickel bronze is rated 30. Aluminum bronze is 91.2% copper,
7% aluminum, and 1.8% silicon. Sae 660 bronze is 83% copper, 7% tin,
7% lead, and 3% zinc. Both have higher tensile strength than mild
steel. Both make good bearings if used against steel. A good example
would be valve guides. Both have poor embedability and so require
clean oil for lubrication if used as bearings.
Hope this helps.
Cheers,
ERS

Thanks,
Helps allot. I was hoping it was more like aluminium with a bronze colour.
Apparently not.
david