|The specific gravity of aluminum is 2.7, approximately one third of the specific gravity of iron (7.8) or that of copper (8.9). Therefore, products made of aluminum are also so light that various benefits are offered.
Because of its large specific tensile strength (strength per unit), aluminum is used as structural materials.
*Specific tensile strength
Aluminum materials can be painted, anodized, or even coated with functional resin film. Such treatment makes it possible to manufacture highly functional products that have beautiful appearance.