Shenzhen Wuge Industrial Co., Ltd

Nickel titanium alloy rope is a shape memory alloy material made of nickel and titanium in a certain proportion, with unique physical and mechanical properties. The following are its main characteristics:

1、 Shape memory effect and hyperelasticity

Shape memory effect:

Above a specific temperature (phase transition temperature), nickel titanium alloy ropes can "remember" their initial shape. When deformed (such as stretched or bent) and heated to a certain temperature, it will automatically return to its original shape. This feature makes it widely used in scenarios that require automatic reset, such as medical stents and mechanical fasteners.   

Super elasticity:

At room temperature, alloy ropes can withstand elastic deformation much higher than ordinary metals (strain can reach over 8%), and can quickly recover to their original state after unloading without permanent deformation. This makes it suitable for applications that require high elasticity and fatigue resistance, such as sports equipment and aerospace components.

2、 Mechanical properties

High strength and fatigue resistance:

The tensile strength can reach 700-1000 MPa, and the performance remains stable after multiple cycles of deformation. It is not easy to break and is suitable for applications that can withstand dynamic loads for a long time, such as fishing lines and cable reinforcement cores.   

Low density and lightweight:

The density is about 6.4-6.5 g/cm ³, which is lower than steel (7.8 g/cm ³). It is lighter and easier to carry and install under the same strength.

3、 Physical and chemical properties

Corrosion resistance:

The surface is prone to forming a dense oxide film (TiO ₂), which has excellent corrosion resistance to water, salt spray, body fluids, etc., especially suitable for medical implants (such as orthodontic wires) and marine environment applications.   

Biocompatibility:

Non toxic and non allergenic, with good compatibility with human tissues, widely used in the medical field (such as vascular stents, orthopedic fixation devices).   

Temperature sensitivity:

The phase transition temperature can be adjusted within the range of -100 ℃ to 100 ℃ by adjusting the composition (nickel titanium ratio) to meet different environmental temperature requirements (such as temperature control components and thermal drive devices).

4、 Processing and Forming Characteristics

Plasticity and processability:

It can be made into fine wires, ropes or complex shapes through cold processing (such as drawing, rolling), and its performance can be optimized through heat treatment (aging treatment) after processing.   

Adjustable memory performance:

By adjusting the heat treatment process, the phase transition temperature, recovery force, and shape memory accuracy of the alloy can be precisely controlled to adapt to diverse application scenarios.

5、 Application Fields

The characteristics of nickel titanium alloy rope make it play a key role in multiple fields:

Medical industry: orthodontic wires, vascular stents, surgical sutures, etc.   

Aerospace: fasteners, pipeline connectors, thermal control components, etc.   

Industry and Electronics: Automatic connectors, sensors, robot drive components, etc.   

Consumer goods: eyeglass frames, sports equipment (such as fishing rod wire loops), smart wearable devices, etc.   

Nickel titanium alloy rope has become an advanced material that combines functionality and reliability due to its shape memory, super elasticity, corrosion resistance, and biocompatibility. With the advancement of processing technology and cost control, its application scenarios will continue to expand, especially in the fields of high-end manufacturing, medical technology, and intelligent devices, with broad prospects.