3.1. Strength--Ability for carrying heavy objects without breaking easily.
3.2. Hardness--Is about scratching.
4. Heat conductivity
4.1. How easily the heat pass through the material.Heat conductors are materials that allows heat to pass through easily.
5. Electricity
5.1. How easily electricity passes through a material.Generally,most metals are able to conduct electricity.Hence those which can conduct electricity,can conduct heat.