Paint help

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I painted some control arms with this paint.
But after handling it I feel like they are chipping way too easily.

I thought I did good prep work. I sanded everything down to metal. Then wiped it down with B12 to remove any residue or oil.

Am I using the incorrect paint and primer? Or am I leaving the surface wrong?

I appreciate any help or advice.
I wonder about that high heat engine paint needing to kind of bake on because the engine gets hot? Doesn't sound like anything in your preparation sounds bad... I know control arms are very susceptible to road gravel or whatever comes flying up at them... I don't know a lot about paint though it doesn't seem like anything that I wouldn't have tried myself...