Topics include, Machine Tools & Tooling, Precision Measuring, Materials and their Properties, Electrical discussions related to machine tools, setups, fixtures and jigs and other general discussion related to amateur machining.
Looks like 850-T5 would be similar to 660 bronze. Not sure where 750 falls in..... can't seem to find a spec on that....but then....I'm not planning on using any.
Like I say....I don't work with fun stuff like aluminum much.....most of what I work with is 'harder than a bull's horn'.
