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Old 02-20-2017, 04:58 AM   #1
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Default 6061 difference T6511 vs T651

I never noticed this before on OLM site but they call T651 'cold finish' & T6511 'extruded'. T651 goes for 69$/ft. T6511 goes for 44 $/ft. Since I'm after a 3" dia slug & will turn it down to 2.8"-ish is one alloy more referable over the other? (Crankcase related parts).

I found the tempering properties here, but they don't really mention cold, finish, or extruded.

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Old 02-22-2017, 06:21 PM   #2
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