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What are the characteristics of medical nickel-titanium alloy tubes?

Release Date:

13 Mar,2023

What are the characteristics of medical nickel-titanium alloy tubes?

The application range of medical nickel-titanium alloy tubes is very wide. Before using them, we definitely need to understand the characteristics of medical nickel-titanium alloy tubes so that we can apply them better. If you are interested in this topic, let's take a look together, hoping to help some related personnel.

Medical nickel-titanium alloy tubes are widely used in various industries, so their uses are definitely extensive. Medical nickel-titanium alloy tubes are used for stent materials, guidewire materials, suture materials, intrauterine device materials, medical nickel-titanium conductor materials, springs, and various formed nickel-titanium and superelastic rods. This material is widely used.

1. Corrosion resistance

Research shows that its corrosion resistance is similar to stainless steel wire.

2. Non-toxicity

Medical nickel-titanium alloy tubes have special chemical components. When using them, you should know that it is actually a nickel-titanium alloy containing about 50% nickel, and nickel is notoriously problematic. Generally, the oxidation of the titanium surface acts as a barrier, giving the nickel-titanium alloy good biocompatibility. The surface TiXOy and TixNiOy can inhibit the release of Ni.

3. Gentle adjustment force

Currently, you can also see commercially used orthodontic metal wires, including austenitic stainless steel wires, cobalt-chromium-nickel alloy wires, nickel-chromium alloy wires, Australian alloy wires, gold alloy wires, and titanium alloy wires. These orthodontic wires have load-displacement curves under three-point bending and tensile test conditions. Moreover, their no-load curve plateau is very low, indicating that they can provide very strong yet gentle corrective force.

4. Good shock absorption performance

This is mainly because the greater the vibration caused by chewing and grinding at night on the archwire, the greater the damage to the tooth root and periodontal tissue. Studying the results of various archwire attenuation experiments is also very beneficial. The results show that the amplitude of stainless steel wire is greater than that of superelastic nickel-titanium wire. The initial amplitude of superelastic nickel-titanium wire is only half that of stainless steel wire. Good vibration and shock absorption performance of archwires are very important for dental health, while traditional archwires, such as stainless steel wires, often worsen root resorption.

5. Medical nickel-titanium alloy tubes also utilize a superelastic characteristic

Superelasticity refers to the phenomenon where a specimen undergoes strain greater than the elastic limit under external force and automatically recovers the strain energy upon release. That is, in the parent phase state, due to the applied stress, a stress-induced martensitic phase transformation occurs, causing the alloy to exhibit mechanical behavior different from ordinary materials. Of course, the elastic limit of medical nickel-titanium alloy tubes is greater than that of ordinary materials and no longer obeys Hooke's law. Unlike shape memory characteristics, superelasticity does not involve heat.

After the above introduction, we have also understood the characteristics of medical nickel-titanium alloy tubes. Other knowledge points will continue to be updated in the next issue. If you have time, remember to come and watch. There are customer service staff available 24 hours here to assist you. Over the years, the company has been committed to expanding and developing domestic and international markets, adopting both online e-commerce platforms and offline physical sales methods simultaneously.