Devcon® Plastic Steel® Putty Resin/Hardener, Kit Container, 1 lb Container, Composition: Iron, Titanium, Bisphenol A Diglycidyl Ether Resin, Organophillic Clay, Silicon, Aluminum Flake, Synthetic Amorphous Silica, Aliphatic Amines, Triethylenetetramine, Benzyl Alcohol, Titanium Dioxide, Amorphous Silica, Aluminum Trihydrate, Paste Form, 48 sq-in Coverage, 16 hr Curing, White/Dark Gray, Slight Odor/Mild Ammonia Like Odor/Scent, 120 deg F Wet/250 deg F Dry, 2.8/0.98 Specific Gravity, >400/>200 deg F Flash Point, Neutral/8 pH, 2.5:1 Mixing Ratio, Flammability: 1, Applicable Materials: Metals, Concrete and Some Plastics, 2800 psi Tensile Strength