Mechanical Strength: They have a tensile strength about 100 times greater than steel at one-sixth the weight. Electrical Conductivity: CNTs can be either metallic or semiconducting depending on their structure, making them suitable for a variety of electronic applications. Thermal Conductivity: They can conduct heat better than almost any other material. Chemical Stability: CNTs are chemically stable and resist corrosion, making them durable under various environmental conditions.