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850 series cast aluminium 1 1/2 bars,looking for supplier

John series 850 is a high copper content cast aluminium alloy that is cast in 13 inch bars used in various bearing applications.in my machinery's handbook its on page 2247'but only up to 750.In the past I have only been able to find 850 at one vender but they cant supply it in the size I need in anything approaching a reasonable cost.
850 what? SAE 850 is self lubricating sintered iron
 
Thanks for link to Erie Bronze,they are the supplier I used for years when I could buy a 1-2 stick for around $30, now they wont cast an 1 1/2 stick and want $250+- for per.That wont fly.I am looking at having a pattern made and having it cast at a foundry locally.Hard to believe there aren't any other suppliers in the whole country.
 








 
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