ten differences between aluminum and stainless steel.
1, strength to weight ratio.
Aluminum is generally not as strong as steel, but its weight is also almost just a third of steel.
This is the main reason why aircraft are made of aluminum.
2, corrosion.
Stainless steel is composed of iron, chromium, nickel, manganese and copper.
After adding chromium, stainless steel will have excellent corrosion resistance.
Aluminum has high oxidation resistance and corrosion resistance, which is mainly attributed to its passivation layer.
When aluminum is oxidized, its surface will become white and sometimes pitted.
However, in certain extreme acidic or alkaline environments, aluminum may corrode rapidly, leading to catastrophic consequences.
3. Thermal conductivity.
Aluminum has better thermal conductivity than stainless steel.
This is one of the main reasons why it is used in automotive radiators and air conditioning units.

4, cost.
Aluminum is usually cheaper than stainless steel.
5、Manipulability.
Aluminum is softer and easier to cut and shape.
Due to its wear resistance, stainless steel may be somewhat troublesome.
Compared with aluminum, stainless steel is harder, making it difficult to shape.
6, welding.
Stainless steel is relatively easy to weld, while aluminum is difficult.
7, thermal properties.
Aluminum will become very soft at temperatures above 400 degrees.
Stainless steel can be used at a much higher temperature than aluminum.

8, electrical conductivity.
Compared with most metals, stainless steel is a very poor conductor.
And aluminum is a very good conductor of electricity.
Because of its high electrical conductivity, light weight and corrosion resistance, high-voltage overhead power lines are usually made of aluminum.
9. Strength.
Without regard to weight, stainless steel is stronger than aluminum.
10, the impact on food.
Stainless steel reacts less with food.
While aluminum will react with food, which affects the color and taste of food.






 

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