1. Tensile strength description: the strength of the fr […]
1. Tensile strength description: the strength of the frame made of magnesium alloy material of the same volume is not as strong as that of aluminum scaffold. To achieve the strength of the frame, the material thickness and tube length must be increased. Therefore, from the weight point of view, magnesium alloy has nothing to do with aluminum alloy. Advantage.
2. Description of metal oxidation: The periodic table clearly shows that magnesium alloys are more likely to be oxidized and corroded than aluminum alloys.
3. Description of fatigue strength: The durability of a frame made of magnesium alloy material of the same volume is worse than that of an aluminum alloy frame. It is also a fatal disadvantage of magnesium alloys. As the number of rides increases, the number of stress occurrences increases, and the strength will be significantly reduced. Even the life of the frame does not exceed 2-3 years. Therefore, professional riders rarely use magnesium alloy frames. If they are used in competitions, It is also calculated that the mileage is replaced in the form of discarding.
4. Description of specific gravity density: Magnesium alloy is lighter than aluminum alloy under the same volume condition, which is the advantage of magnesium alloy.
5. Description of manufacturing cost: Because magnesium alloy is a lively metal, manufacturing equipment and environment have higher requirements, resulting in high manufacturing costs. The cost of the produced bicycle frame is far less than that of aluminum alloy frame.
6. Description of elastic modulus: 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 pipe diameter will absorb more pedaling force during actual riding and affect the riding efficiency.
Conclusion: Magnesium alloys are currently only used in aerospace, military aircraft, and 3C industries because of their low specific gravity.