How hot is snap?

[bikermikearchery]

I spent an exhausting amount of time this AM in the search area. Several times I have seen reference to Snap tempering, but did not see a temperature for it.
Now this is from the same people/person who say that hand warm is not a temperature.
So how hot is snap?
Is 212 F hot enough to effectively snap temper? My thought is to put my blades in to boiling water with detergent after I have brought them down to 140 t 160 f range. Then they would go to the cryo tank. and then to a 400 tempering cycle.

 

[argel55]

Sometime back I remember it being said as 300 degrees to snap temp before cryo. Maybe that was what Ed did on his forged blades. Mike

 

[mete]

Snap temper is 300 F. 212 F doesn't do much at all and 350 F or higher will stabilize the retained austenite to a degree.