The thermocouple has been finally calibrated and so I was able to harden my first blade! 
I bought inexpensive Thyssen Krupp billet bar steel 80CrV2, which is carbon spring steel used in Finish knife industry.
Hardness of the annealed billet was circa 40 HRC. After 10 min hardening at 1545°F and oil quenching the blade hardness was between 60 and 65 HRC.
After 2 hours tempering at 390°F the hardness dropped slightly below 60 HRC.
The blade has flat Scandi grind with included angle of 24°and a microbevel with 34°. The handle was made of ash wood and still has to be impregnated.
Jan
I bought inexpensive Thyssen Krupp billet bar steel 80CrV2, which is carbon spring steel used in Finish knife industry.
Hardness of the annealed billet was circa 40 HRC. After 10 min hardening at 1545°F and oil quenching the blade hardness was between 60 and 65 HRC.
After 2 hours tempering at 390°F the hardness dropped slightly below 60 HRC.
The blade has flat Scandi grind with included angle of 24°and a microbevel with 34°. The handle was made of ash wood and still has to be impregnated.
Jan