Copper and Aluminum

Material Copper Aluminum Iron Scrap
Atomic Symbol Cu Al Fe
Atomic Number 29 13 26
Atomic Weight 63.55 g/mol 26.98 g/mol 55.85 g/mol
Density 8.96 g/cm³ 2.70 g/cm³ Varies
Melting Point 1,085°C 660.32°C 1,538°C
Boiling Point 2,567°C 2,470°C 2,862°C
Electrical Conductivity High High Low
Thermal Conductivity High High Low
Tensile Strength Low Low Varies
Hardness (Mohs) 3 2.75 Varies
Color Reddish-brown Silver Varies
Luster Metallic Metallic Metallic