The outstanding performance of titanium alloy springs

Titanium alloys (such as Ti-6Al-4V, Ti-3Al-2.5V) exhibit remarkable comprehensive properties. Their strength is comparable to that of steel, with tensile strength ranging from 800 to 1100 MPa, but their density is only 60% of that of steel. This low-density and high-strength characteristic significantly reduces the weight of titanium alloy springs while maintaining the same load-bearing capacity. Additionally, its elastic modulus (110-120 GPa) is lower, providing greater elastic deformation capacity. It has higher elastic energy ratio and better energy storage capacity than steel. In scenarios requiring high energy absorption, such as shock-absorbing springs, titanium alloy springs can more effectively absorb and release energy, providing stable elastic support for equipment.

(2) Extremely strong corrosion resistance
Titanium alloys have an "immune" ability to corrosive media such as seawater, chloride ions, and body fluids. In marine environments, ordinary metal springs are prone to corrosion and rusting by seawater, which can damage the equipment and affect its normal operation. However, titanium alloy springs can work stably for a long time without the need for additional anti-corrosion treatment. In the medical field, as implant materials such as heart stent springs, titanium alloy springs do not react chemically with body fluids, avoiding the harmful substances caused by corrosion that may pose risks to the human body and ensuring the health and safety of patients.

(3) Long service life under fatigue conditions
The fatigue limit of titanium alloys can reach 50% - 60% of their tensile strength, while that of steel is approximately 40%. This means that under high-frequency dynamic loads, such as in the springs of aircraft engine valves, titanium alloy springs can withstand more cycles without experiencing fatigue fractures. Their long service life reduces the maintenance costs and replacement frequency of equipment, and enhances the reliability and safety of the equipment.

(4) Non-magnetic and excellent biocompatibility
Titanium alloys are non-magnetic, and this characteristic enables them to function normally in the MRI (Magnetic Resonance Imaging) environment without interfering with the imaging results. Additionally, titanium alloys have passed the ISO 5832-3 medical certification, such as TA1 pure titanium or Ti-6Al-4V ELI, and possess excellent biocompatibility, which does not cause rejection reactions in the human body. They are widely used in the medical implantation field.