Thanks everyone for the responses. I wanted to say a couple more things just for the sake of getting thoughts down.
The small titanium screws that thread into the alumninum are torqued to 12.5 ftlbs per SPL spec. I've ran FEA on alumninum threads in the past and the safety factors are pretty low for stripping, so I'll be careful not to over-torque these screws.
While it seems the yield strength of 6061 aluminum is sufficient to withstand cornering loads in this application, the modulus of elasticity of the material is 68.9 compared to steel's 205 (gigapascals). An alumninum part will therefore deform three times as much as a steel part of the same geometry under the same load case. For a suspension component, this mean your allignment is going to change slightly under heavy cornering. This is most likely a moot point because the camber arm seems to have a larger cross section->lesser stresses->lesser deflection. I'd be curious to do strain tests on both of these camber arms and compare.
Quote:
Originally Posted by OptionZero
why you didn't get the rest of the SPL suspension components
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Later down the road, yes that's the plan. Currently I'm not tracking the car.