What are the differences between aluminium alloy and magnesium alloy?

West Aluminum - West Aluminum Industry Telecom:The tensile strength, fatigue strength, metal oxidation, manufacturing cost, density and modulus of elasticity of aluminium alloys and magnesium alloys are compared and explained. This will give you a comprehensive understanding of the differences between magnesium alloys and aluminium alloys.

How to distinguish between aluminium alloy and magnesium alloy?

1. Tensile strength shows that the strength of the frame made of the same volume of magnesium alloy material is not as good as that made of aluminium alloy. To achieve the strength of the frame, it is necessary to increase the thickness of the material and tube, so magnesium alloy has no advantage in comparison with aluminium alloy in terms of weight.

2. The fatigue strength shows that the durability of the frame made of the same volume magnesium alloy material is worse than that of the aluminum alloy frame. It is also a fatal defect of magnesium alloys. As the number of cycling increases, the number of stress occurrences increases, and the strength decreases significantly. Even the frame life does not exceed 2-3 years, so professional riders seldom use magnesium alloy frame. If they use magnesium alloy frame during the race, they also calculate the mileage to be replaced by discarding form.

3. Metal oxidizability: The periodic table of elements clearly shows that magnesium alloys are more easily oxidized and corroded than aluminium alloys.

4. Manufacturing Cost Explanation: Because magnesium alloys are active metals, there are higher requirements for manufacturing equipment and environment, which leads to higher manufacturing costs. The performance-price ratio of bicycle frame produced is far lower than that of aluminum alloy frame.

5. Specific gravity density shows that under the same volume condition, magnesium alloy is lighter than aluminum alloy, which is the advantage of magnesium alloy.

6. Elastic modulus shows that the rigidity of the frame made of magnesium alloy is worse than that made of aluminum alloy, and the frame made of the same thickness and diameter will absorb more tread force when riding in practice, which will affect riding efficiency.

(Chongqing Xialu Xinda Aluminum Industry Co., Ltd. Publicity Department collates contributions)

Source: Network

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