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Bikes Frame:Carbon Steel,Alluminum or Magnesium Alloy?

Jul. 26, 2019

At present, the main materials of bicycles on the market are aluminium alloy frame, titanium alloy frame, magnesium alloy frame, carbon fiber bicycle frame and so on. Which material has better performance? Which is the best material for frame? Below is a detailed description of the advantages and disadvantages of various materials of bicycles, to facilitate you to choose the right texture, price, performance bikes.


Advantages and disadvantages of aluminum alloy,high carbon steel,Magnesium alloys,Titanium Alloy frame bicycle respectively:

1. Aluminum alloy frame has the advantages of light weight, good elasticity and good resistance to moisture oxidation. At present, it is the main material of bicycle frame. The disadvantages are that the cost is higher than that of high carbon steel, and the strength is not as good as that of high carbon steel.

2. High carbon steel frame has the advantages of high strength and low price. As the weight of the bicycle is gradually replaced by aluminium alloy, only the lower end of the bicycle will use high carbon steel frame. Disadvantage: heavy weight, easy to rust in wet environment.

3.Magnesium alloys of the same grade are more expensive because they are lighter than aluminium alloys and are more difficult to fabricate. There is little difference in wheel load of the same grade.

4.Titanium alloy is a high performance material used in aerospace products. It has excellent properties of metal materials. It is recognized internationally as the most advanced and ideal material for producing high-grade bicycles for all kinds of competitions and leisure. The outstanding characteristics of titanium alloys are light weight, high strength, good elasticity, impact resistance, good fatigue performance, corrosion resistance and never rusting. White Titanium alloy bicycle frame has the disadvantage of high price.


In recent years, magnesium alloys have also been frequently used in bicycle industry.

The relative strength (strength to mass ratio) of magnesium alloys is the highest. Specific stiffness (ratio of stiffness to mass) is close to that of aluminium alloy and steel, much higher than that of Engineering plastics.

In the elastic range, when magnesium alloy is subjected to impact load, the energy absorbed by magnesium alloy is more than half that of aluminum alloy parts, so magnesium alloy has good seismic and noise reduction performance.


The melting point of magnesium alloy is lower than that of aluminium alloy, and its die casting performance is better. The tensile strength of magnesium alloy castings is similar to that of aluminium alloy castings, generally up to 250 MPA and up to 600 Mpa. Yield strength and elongation are also similar to those of aluminium alloys.

Magnesium alloys also have good corrosion resistance, electromagnetic shielding performance, radiation protection performance, can achieve 100% recycling.

Magnesium alloy castings with high stability have high dimensional accuracy and can be machined with high precision.

Magnesium alloys have good die-casting properties, and the minimum wall thickness of the die-casting parts can reach 0.5mm. It is suitable for manufacturing all kinds of automobile die castings.


SHANBEN Bicycle's latest very popular magnesium alloy frame child bicycle has been welcomed by the market - Alpha intelligent bicycle. The frame is made of high-quality magnesium alloy without any welding joint and high strength spring shock absorber. It is more comfortable to ride on bumpy road, equipped with high-quality auxiliary wheels, which is not easy to deform and has strong support performance. The handlebars are equipped with intelligent speedometer, lighting, music playing, temperature measurement, etc., so that children can add more fun in riding.


The wheels are made of aluminium alloy. They are light in weight, durable and fashionable in appearance.


The seat is more in line with human mechanics, with a high-strength shock absorber spring at the bottom. Seats and handlebars can be adjusted as children grow up.

Click this link to know more about the ARF bikes.