source for small qty of high Si Aluminium barstock
source for small qty of high Si Aluminium barstock
(OP)
Im trying to locate, with no luck in Australia, a small quantity of 35mm OD round, 20 to 30% silicon aluminium for piston material for small 2 stroke engines. Aprox 300mm length
Can anybody help?
Ken
Can anybody help?
Ken





RE: source for small qty of high Si Aluminium barstock
There are several other Silicon Based Hypereutectic Al alloys at the following site with a Japanese JIS Number
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RE: source for small qty of high Si Aluminium barstock
Here is a paper from the NASA Technical Transfer office about the high Si-Al alloy you might give them a call. All my dealing with NASA have been very cordial and informative.
techtran.msfc.nasa.gov/tech_ops/nasa388alloy.pdf
RE: source for small qty of high Si Aluminium barstock
but not quite what im after.
I plan on machining the pistons from the barstock.
The higest silicon content i could see was 17% ?
There is bar available here in 21 and 30%, but only in 20 and 25 mm diameter. my pistons will have finished size of 30mm.
It will be a taper fit to the liner, no rings, Running in a hard chrome plated brass liner. Standard practice for this type of engine.