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The comparison between titanium alloy bolt and steel bolt

Time: 2018-07-30

What are the difference between titanium alloy bolt and steel bolt?

For titanium alloy bolt, the material is Ti6AL4V which is α-β alloy type material. The optimal features are light, strong and rustless. It is widely used in engine of plane, advanced mechanical equipment, medical equipment and other high precision technology.
For steel bolt, the material is 40Cr. With heat treatment, it could be 10.9 grade. Without heat treatment, it will be 8.8 grade.
For titanium alloy bolt, it is 42.4g for one piece.
For steel bolt, it is 73.8g for one piece.
The first feature of titanium alloy is light, its weight can be comparable to aluminum.
3.Tensile Strength
For titanium alloy bolt, the tensile strength≥900Mpa
For steel bolt with 8.8 grade, the tensile strength≥800Mpa
For steel bolt with 10.9 grade, the tensile strength≥1040Mpa
The second feature of titanium is intensity.  The intensity value of titanium is the top one in the nonferrous metals. Intensity value is the unit density for the index of the tensile strength. The value is larger and lighter, the intensity of titanium is higher. The intensity of titanium is much larger than the intensity of the aluminum, the difference of both is almost eight times.
Through the high temperature heat treatments to further improve the mechanical performance. It’s perfect use in racing car.
For titanium alloy bolt, it will never get resty.
For steel bolt with chrome, it could pass 72 hours salt spray test.
For steel bolt with zinc, it could pass 6 hours salt spray test.
The third feature of titanium is best corrosion resistance and heat resistance. Never getting rusty, so it is often used in steamship, naval ship, radar and other offshore installation.