The difference between aluminum alloy and stainless steel

Stainless steel is not rust-resistant acid steel short, resistant to air, steam, water and other weak corrosion medium or rust-free steel species called stainless steel; The corrosion - resistant medium (acid, alkali, salt and other chemical erosion) corrosion of steel species called acid - resistant steel.

Aluminum alloys are aluminum and aluminum alloy materials obtained by extrusion，the resulting products can be plates, rods and a variety of special profiles, can be widely used in construction, transportation, transportation, aerospace and other fields of new materials.

The differences are as follows:

1. Aluminum alloy density is low, but the strength is relatively high, close to or more than high-quality steel, good plasticity, can  be processed into a variety of profiles, with excellent conductivity, thermal conductivity and corrosion resistance, widely used in industry, the use of second only to steel. Some aluminum alloys can be heat treated for good mechanical,  physical and corrosion resistance. Heat treatment can  be enhanced. It is  characterized by high hardness, but poor plasticity. But poor corrosion resistance, high temperature softening fast, with excellent thermoplasticity, suitable for forging, so also known as forging aluminum alloy. Aluminum alloy is generally carbide, small deformation, light  weight, damage common brittle fracture, fatigue life is short

2. Stainless steel is mainly nickel-chrome alloy, corrosion-resistant. When there are corrosion resistance requirements for what is produced, stainless steel is sure to be used. Second, stainless steel surface can be processed by the need, the appearance is more beautiful than aluminum alloy, smooth, but the cost of stainless steel than aluminum alloy is higher. Stainless steel has better ductability, good elasticity, can be deformed, heavy weight, common deformation damage, fatigue life is long.

3. Surface treatment: aluminum alloy is more abundant, including electrophoresis, powder coating, anod anodizing, etc., while stainless steel is less.