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How to distinguish between aluminum alloy and magnesium alloy?
- Dec 21, 2018 -

1. Tensile strength description: The frame made of the same volume of magnesium alloy material is not as strong as the aluminum alloy. To increase the thickness of the material and the pipe diameter to reach the frame strength, there is no advantage in comparing the magnesium alloy from the weight of the aluminum alloy. .

2. Anti-fatigue strength description: The durability of the frame made of the same volume of magnesium alloy material is worse than that of the aluminum alloy frame. It is also a fatal flaw in magnesium alloys. As the number of rides increases, the number of stresses increases, the strength is significantly reduced, and even the frame life is less than 2-3 years. Therefore, professional riders rarely use magnesium alloy frames. If used during competitions, It is also calculated that the mileage is replaced in a disposable form.

3. Metal Oxidation Description: It is clearly shown on the periodic table that magnesium alloys are more susceptible to oxidative corrosion than aluminum alloys.

4. Manufacturing cost description: Because magnesium alloy is a lively metal, the manufacturing equipment and environment have higher requirements, resulting in high manufacturing costs. The cost of the bicycle frame produced is far less than that of the aluminum alloy frame.

5. Specific gravity density Description: Magnesium alloy is lighter than aluminum alloy under the same volume, which is the advantage of magnesium alloy.

6. Modulus of elasticity: The rigidity of the frame made of magnesium alloy material is worse than that of the aluminum alloy frame. The frame made of the same thickness and diameter will absorb more pedaling force during the actual ride and affect the riding efficiency.