What are the advantages and disadvantages of the use of magnesium profiles compared with aluminum profiles?
Note 1: the tensile strength of the magnesium alloy material made of the same volume of the frame strength than Aluminum Alloy, frame to achieve the strength to increase the thickness of the material and the tube, so from the perspective of the weight and Aluminum Alloy compared to magnesium alloy does not have any advantage.2 fatigue proof strength: the same volume of magnesium alloy material, the durability of the frame is worse than the aluminum alloy frame. It's also a fatal flaw for magnesium alloys. With the number of cycling more, the number of the stress is higher, intensity will be significantly reduced, even life is no more than 2-3 in the frame, so professional riders rarely use magnesium alloy frame, if used in the game, is calculated using the mileage to abandon the form of replacement.
5 specific gravity density: under the same volume conditions, magnesium alloy is lighter than aluminum alloy, which is the advantage of magnesium alloy.6 modulus of elasticity: the frame made of magnesium alloy is more rigid than aluminum alloy frame, and the frame made of the same thickness and caliber can absorb more trampling force when riding, which will influence riding efficiency.
3 oxidation of metals: the periodic table clearly shows that magnesium alloy is more easily oxidized than aluminum alloy.4 manufacturing cost Description: because magnesium alloy is a lively metal, so manufacturing equipment and environment have higher requirements, leading to high manufacturing costs, production of bicycle frame cost performance is far less than aluminum alloy frame.