For 4130, the maximum hardness (quenched) I am showing is about 50 HRc at 1/16" from an end quench hardenability curve provided by Ryerson.
For 4130H, the maximum hardness reported is 54 HRc at 1/16" from an end quench hardenability curve.
unclesyd - your UTS and YS data for 4130 correlate with what I have from Republic Steel Corp. Normalized at 1600 deg F, quenched 1575 deg F in water, and drawn at 400 deg F for 1 hour.