Tech-Rod 410NiMo description: Tech-Rod 410NiMo is designed to weld materials of similar chemical composition in cast and wrought forms. Preheat and inter-pass temperatures of not less that 300°F (150°C) are recommended during welding. Post-weld heat treatment should not exceed 1150°F (620°C) as higher temperatures may result in hardening. NOTE: Mechanical properties below reflect utilization of post-weld heat treatment between 1100°F and 1150°F for one hour.