The material listed in the product sheet attached to this link is "HI TEMP Lab Metal" It is resistant to temperatures up to 1000 Degrees F. after curing, and retains a large portion of it's strength to that temperature.
It requires a heat cure of a minimum of 425 degrees F. for four hours after an air cure of 24 hours.
It most definitely is not intended for applications where JB Weld would be considered since JB Weld is good only to about 450 F. before turning to putty, and the 425 degree cure would not be good for most wood or plastics, or any aluminum products where dimensional stability is an issue.
This is good stuff but has very limited usage for most of our applications, but might be good for a muffler repair ect., but don't let your wife catch you curing it in the oven as the smell will fill the house for days.

Randy Cuberly