Ideal for use on stainless steel or superalloys in industries that require prevention against corrosion, pitting, or degradation Certified to meet U.S.A. and International nuclear and military specifications Fast drying formula leaves wear-, weather- and UV-resistant marks Marking range: -50°F to 150°F (-46°C to 66°C) Engineered to meet: less than 200 ppm total halogens , less than 250 ppm each low melting point metal , less than 300 ppm total low melting point metal , less than 200 ppm sulfur