J-B Weld is a cold weld, a adhesive for metals, that comes in two separate tubes, one with a red label (hardener) and one with a black label (steel). The blister pack states that J-B weld maximum (usable) temperature is 600 degrees Fahrenheit; tensile strength is 3960 psi, it will not conduct electricity, and the cure time is about 15 hours.
MATERIALS: Cold welds iron, steel, aluminum, brass, bronze, copper, pewter. Bonds wood, porcelain, ceramic, and plastic.
CAUTION: Avoid contact with skin and eyes. Use with adequate ventilation. Do not use near or allow contact with open flame.
COMPOSITION: Contains aliphatic polyamine/polyamide/epoxy resin.
FIRST AID: If in eyes flush with plenty of water. If swallowed, drink several glasses of water and get quick medical advice.
USE: J-B Weld consists of two parts. Squeeze equal parts from each tube onto any clean disposable surface. Mix together thoroughly. A wooden dowel or paddle is a good mixing tool.
Surface for application must be clean, dry, and free from dirt, grease, oil, etc. Remove paint, primer, rust, etc. before applying JB Weld. J-B recommends using lacquer thinner or acetone. For the best weld, roughen surfaces to be welded with file or coarse sandpaper.
Apply with putty knife, spoon, wooden paddle or other suitable tool. Avoid contact with skin and eyes. May be applied in an even coat, will bead or extruded shape as needed.
Allow 4-6 hours for drying before handling. Allow to dry overnight for approximately 15 hours before putting object to use. J-B Weld works faster if used in a room with the temperature above 50 degrees Fahrenheit. After J-B Weld has cured for six hours, a heat lamp or light bulb placed near the weld will speed drying time.
In hot weather or in a very warm room, let J-B Weld set-up or dry about 15 to 20 minutes after mixing. This lets it thicken and prevents running or sagging. In cold weather a heat lamp or light bulb placed close by will hasten drying time.
CLEAN UP: For skin wash off with soap and water.