I had to look up the alloy, data sheet below including qualities for machining, welding etc. http://www.suppliersonline.com/propertypages/hayneshr120.asp#General Pay attention to the part about work hardening and how to anneal. I think you would want to anneal after fabrication of the nozzle and chamber so you wouldn't break drills and taps putting in fuel lines etc. If anyone has worked with stuff that work hardens easily little alarm bells should be going off in your heads about using this alloy. Ever tried to machine glass? I know you are contracting it out, but suppose you need another hole drilled or have to re tap a hole? Will firing at 1000 PSI work harden the engine? If it did you would have to anneal it to work on it. The annealing temperate is 2200 F. with a quick quench, would it warp? I don't think your pockets are deep enough for this alloy at this time.
John Carmack wrote: > > Our contract machinist is waiting for a sample of the alloy we > >plan to use for the engines, so that he can estimate the difficulty of > >making the parts we need. > > What alloy? Any reason you aren't using plain old 316? > > John Carmack > > _______________________________________________ > ERPS-list mailing list > [EMAIL PROTECTED] > http://lists.erps.org/mailman/listinfo/erps-list -- >>>>>>>>>>>>>>>>----<<<<<<<<<<<<<<<<< ........ Alex Fraser N3DER ......... ......... [EMAIL PROTECTED] ....... [~]_>^</\-[~]_>^</\-[~]_>^</\-[~]_>^< _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
