Re: Trailer ramps
6061T6 can be bent but the inside radius of the bend has to be 4 times the material thickness so assuming 3/16 thickness, the inside radius needs to be 3/4". Assuming that you are building alum ramps to minimize weight, the 6061 option is going to be the best weight to strength ratio. 3003 does bend easily but has the strength of a wet noodle. 5052H32 might be a better compromise but I would opt for the 6061 alloy.
Jim Caughlin
SS 6019
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