I've only done two folder blades of S35VN, but here's how I did it, and like the way they came out.....
-Pre-heat to 1400F, hold for 30 mins.
-Ramp to 1950F, hold for 30 mins.
-Quickly get it out of the foil, and "Plate Quench".
-Temper for 2 hours X 3 cycles. Forgot to mention I used 650F for the tempering temp