The document compares the performance of different materials when exposed to radiant heat. It shows graphs of surface temperature over time for Vision, Promask, ITO visor, and a new material when exposed to 8.0KW/m2 of radiant heat. The Vision standard material started crazing at 3 minutes with a surface temperature of 185°C and melted at 4 minutes at 198°C. Promask started crazing at 2.5 minutes at 160°C and melted at 3.5 minutes at 185°C. The document notes there is a need for caution and mentions a dilemma when testing new materials.
