45-50C is enough to handwash a pan.

I always thought water became too hot for hands at around 40 degrees.
This site http://www.tap-water-burn.com/ seems to confirm that.

"Even though this is a 'relatively-safe' temperature, exposure to
water set at 110° F is painful; the human pain threshold is around
106-108° F"

110 = 43.3 C
108 = 42.2 C
106 = 41.1 C

Mr F.