Self fluxing 6-Percent silver content comes in a plastic dispenser tube to protect it from the elements * Can be used on stainless steel, copper, brass and nickel and chrome plated metal and iron * Joint strength up to 20,000 PSI with tensile strength that stays bright and hard * Working temperature up to 1,100 degrees Fahrenheit/593 degrees Celsius * Application temperature is 400 degree Fahrenheit to 700 degrees Fahrenheit ie.204 degrees Celsius to 371 degrees Celsius