The difference between aluminum alloy and magnesium alloy
Aluminum alloy and magnesium alloy are two kinds of metal raw materials widely used in modern industrial industry, but they are different in performance and other aspects. What is the performance difference between aluminum alloy and magnesium alloy?
Today xiaobian here for you to carry out the following analysis, hoping to help more people have a deeper understanding of these two different metal raw materials.
1. Different tensile strength:
The frame made of the same volume of magnesium alloy material is not as strong as aluminum alloy. To achieve the strength of the frame, the thickness of the material and the tube must be increased. Therefore, compared with aluminum alloy, magnesium alloy has no advantage from the perspective of weight, while aluminum alloy has a higher tensile strength.
2. Different fatigue strength:
The frames made of magnesium alloy of the same volume are less durable than aluminum alloy frames, which is also a fatal defect of magnesium alloy.
The more cycling times, the higher the stress times, and the significantly lower the strength. Even the frame life is no more than 2-3 years. Therefore, professional riders seldom use magnesium alloy frames, and if they use them in the race, they will replace them in the form of abandonment.
Therefore, the fatigue strength of aluminum alloy is better than that of magnesium alloy.
3. Different oxidation properties of metals:
The periodic table of elements clearly shows that magnesium alloys are more likely to be oxidized and corroded than aluminum alloys, which leads to a limited range of use of magnesium alloys.
4. Different manufacturing costs:
As magnesium alloy is a active metal, manufacturing equipment and environment have higher requirements, resulting in high manufacturing costs, the bicycle frame produced is far less cost-effective than aluminum alloy frame.
5. Different specific gravity density:
The advantage of magnesium alloy is that it is lighter than aluminum alloy under the same volume condition.
6. Different modulus of elasticity:
The frame made of magnesium alloy is less rigid than the frame made of aluminum alloy, and the frame made of the same thickness and pipe diameter will absorb more pedal strength in the actual riding and affect the riding efficiency.
To sum up, although aluminum alloy and magnesium alloy have their own advantages, relatively speaking, aluminum alloy has more advantages and is relatively widely used.