Suitable for heavy duty applications; Service Temperature: 900°C / 1652°F; Melting Temperature: 1700°C / 3000°F; Suitable usage: Heavy duty welding with sparks and spatter, Grinding and flame cutting, Furnace blanket, Slag protection, Heat treating, Stress relief up to 1700°F; Popular applications: Heavy sparks and spatter, Molten metal, Thermal insulation; FM approved