Basic physical properties of aluminum

Aluminum is a silver-white light metal. It is malleable. Commodities are often made into columns, rods, sheets, foils, powders, ribbons and filaments. Melting point 660℃. Boiling point 2327℃. The relative density is 2.70, and the density of liquid aluminum is 2.303 g/cm³. The elastic modulus is 70Gpa and Poisson's ratio is 0.33. The electrical conductivity of aluminum is about 60% of that of copper, and if measured per unit mass, the electrical conductivity of aluminum exceeds that of copper, which is often replaced by copper during long-distance transmission. It is widely used for its light weight, good electrical and thermal conductivity, high reflectivity and oxidation resistance. The aluminum used to make daily dishes is usually called "steel fine" or "steel grade". Thermal expansion coefficient of Al at (room temperature) 25℃ 0.0000236mm/℃ or 23.6ppm·k-1.