Aluminum is lighter, feels better, and its relative hardness is not as good as stainless steel. Stainless steel is relatively heavy, which can better reflect the texture of metal, but it is difficult to color.

Aviation aluminum is a kind of aluminum alloy, which is called the best of aluminum alloys. 1, mechanical properties: 7 series aluminum alloy has the highest hardness among all aluminum alloys, so it is suitable for aerospace field. 6 series aluminum alloy has moderate hardness, which can basically meet the needs of production and life. 2. Cost: The higher the hardness of aluminum profile, the more difficult it is to form, so the cost of aviation aluminum profile is very high. General 6-series aluminum alloys (most commonly used 6063,6061etc. ) moderate hardness, easy extrusion and low production cost.