The Perfect Blend Of Lightweight And High Performance For Titanium Fasteners

Titanium alloy materials in the field of fasteners has significant advantages, not only to meet the aerospace and other high-end areas of high demand for material performance, but also for the fasteners of lightweight, high performance to provide new possibilities. With the development of China's aerospace industry, new airplanes and space vehicles using the level of connection technology continues to improve, the new fasteners also put forward new requirements, ultra-high-strength titanium alloy fasteners is one of the trends of future development.
Titanium alloy material in the fastener application has the following advantages:
(1) low density. The density of titanium alloy is significantly less than the density of steel materials, so titanium alloy fasteners are lighter than steel fasteners.
(2) High specific strength. Titanium alloy is a common metal material with high specific strength. Using the advantages of high specific strength, titanium alloy can also be used to replace the lighter quality of aluminum alloy materials, when the external load is the same, titanium alloy parts of the geometry of the smaller, can effectively save space, this concept of material utilization of the aerospace field has a very important significance.
(3) High melting point. The melting point of titanium alloy is significantly higher than that of steel materials, so the heat resistance of titanium alloy fasteners is better than that of steel fasteners.
(4) The coefficient of thermal expansion and modulus of elasticity is small. The coefficient of thermal expansion and modulus of elasticity of titanium alloy materials than nickel alloys and iron and steel materials, in the same temperature change interval, titanium alloys produce thermal stress is very small, so titanium alloys have high thermal fatigue performance.

(5) Non-magnetic. The magnetic permeability of titanium alloy is very small, almost negligible, so titanium alloy fasteners are non-magnetic, can effectively prevent the interference of magnetic fields. Austenitic stainless steel is also non-magnetic, but the subsequent cold working will increase its magnetic properties, and titanium alloy hot or cold working do not change its magnetic properties, which makes titanium alloy can be used in avionics equipment.
(6) high yield ratio. Fasteners subjected to tensile load design critical strength standard is the yield strength, followed by tensile strength, because once the fastener yield deformation, will lose the fastening effect. Compared with steel materials, titanium alloy yield strength and tensile strength is close to the yield strength ratio is high, so titanium alloy fasteners have a higher safety.
(7) Electrode potential matches with carbon fiber composites. In the fasteners, titanium alloy is used in a very large amount of important reasons is titanium alloy electrode potential and carbon fiber composite material electrode potential matching, effectively preventing the phenomenon of galvanic corrosion.
(8) In addition, titanium alloy also has excellent corrosion resistance, high creep resistance and other advantages.
Titanium alloy fasteners with its excellent performance and wide range of application prospects, is gradually becoming the future of the connection technology of choice. With the continuous progress of technology and application expansion, titanium alloy fasteners will show its unique advantages and value in more fields.