Aluminum Alloy most used bicycle was 6000 (Al-Mg-Si) and 7000 (Al-Zn-Mg-Cu) two after heat treatment (aluminum, high temperature resistance, can change the properties at high temperature) can be made into a variety of.6000 material is considered corrosion resistance, good strength and good weldability of the material.

7075 is an aluminum alloy, with zinc as the primary alloying element. It is strong, with a strength comparable to many steels, and has good fatigue strength and average machinability, but has less resistance to corrosion than many other Aluminum alloys. Its relatively high cost limits its use to applications where cheaper alloys are not suitable.

7075 aluminum sheet is ideal for marine and automotive applications as well. Products where strength is critical, such as rock-climbing equipment, hang glider airframes and bike frames are commonly made from 7075 aluminum. Other uses include gears, missile parts, regulating valve parts, shafts (including Lacrosse sticks) and chassis plates, as well as in precision rifles, Because it can be highly polished, 7075 alloy is also widely used in mold tool manufacture, particularly in the plastics industry.

7000 is the strongest in the Aluminum Alloy material. Especially the 7075 is super duralumin (aircraft materials), but it is difficult to weld, poor corrosion resistance (pale). Aluminum is light but not hard, in order to enhance the strength of it made of alloy and applying heat treatment heat treatment. Take the precipitation enhancement method, simply, in the metal composition of the 1 kinds of metal materials. The deformation impede heat treatment in a high temperature, can cause aging, if not through the program frame, will lead to room temperature aging. This means that the frame is placed in a room will gradually become stronger. Many Aluminum Alloy system with frame

6061T6 made.T6 mark after heat treatment and aging. What if there is no heat treatment intensity can reach 1/2, or 1/5, by means of heat treatment can increase 5 times the strength of.7005 alloy is often used to make the frame, its intensity is less than 7075, but it at room temperature can be enough the limitation of materials