Multi-Walled Carbon Nanotubes Black-clustered powder that may be used as an additive in various materials. Applications : provide electrical conductivity or mechanical reinforcement for polymer and paper products. Production Process : Chemical Vapor Deposition Tensile Strength : Excellent Thermal Conductivity : High Electrical Conductivity : High Outer Diameter : 5-20 nanometers Outer Diameter Average : 15 nanometers Average Number of Walls : 7 walls per nanotube Length : 1-20 micrometers