With a Basic analysis
The grade itself is a hypereutectic steel and with the carbon content of around 1% capable to deliver 66HRC easily, after the quench.
With a slight difference of traces of Vanadium for a better hot work ability.
Flextest: Check sharpened edge with flex test in case it fails add 10°C to the tempering temperature and try flex test again after 1 h tempering
Accademia della crusca
