No, you should generally
not send an SAT score that falls significantly below the 50th percentile range of admitted students at a particular college. Submitting a low score can hurt your application more than not submitting a score at all. Colleges will see that you took the test and that you chose not to submit a score that would likely be detrimental to your application. They'll likely assume your ACT score is a better representation of your academic abilities.
Focus on submitting your best scores, which in this case appears to be your ACT. A weak SAT score adds nothing positive to your application and could potentially lower your chances of admission.