I can only speak about temperatures down to about -40.

I have had absolutely no problems what so ever with any Scrap Yard knife at those temperatures. My Dog Father had been used more below freezing than above and it just trucks right along. The res-c is quite nice since it doesn't transfer cold like metal. <img src="/ubbthreads/images/graemlins/smile.gif" alt="" /><img src="/ubbthreads/images/graemlins/thumbup.gif" alt="" />