I sent an email to Chavant Inc. in regards to Y2 Klay's melting point and flash point. Below are the numbers Howard gave me.
Melting Point: 180F over a 2 hours period
Flash Point: 450F
The melting point I assume is the pour melting point. For shaping and sculpting purposes, it does melt at a much lower temperature than that quickly enough. It also sticks well to itself without the application of high heat or melting. For shavings one simply has to press the clays together to get a weld.