Huizhou Pengchengrui Technology Co., Ltd.

The core characteristics of nickel titanium alloy are shape memory effect and super elasticity. Ordinary steel wire is a traditional elastic metal, and if it deforms beyond the elastic limit, it will permanently bend.

1. Super elasticity (the most commonly used advantage)

-Nickel titanium wire: can withstand large deformations (up to about 8% strain), automatically returns to its original state after unloading, and has excellent rebound.

-Ordinary steel wire: The elastic deformation is very small (generally<0.5%), and it undergoes plastic deformation when bent slightly larger, and cannot be bent back.

>Typical example: Orthodontic archwire, nickel titanium can slowly straighten crooked teeth, while ordinary steel wire is hard and easily deformed.

2. Shape memory effect

It can be bent freely at low temperatures and automatically returns to the preset shape after heating up. Ordinary steel wire does not have this characteristic and will not automatically recover after deformation.

Application: Temperature control driver, medical bracket.

Nitinol Wire 

3. Soft stress and stable force value

Nickel titanium maintains a relatively constant output force (plateau force) within a large range of deformation;

Ordinary steel wire: The greater the deformation, the sharp increase in force, making it easy for stress concentration and fluctuating force.

>Advantage: Continuously exerting gentle force on tissues in medical treatment, which is not easily damaged.

4. Better corrosion resistance

Nickel titanium alloy has better corrosion resistance than ordinary carbon steel wire in body fluids and humid environments, and is close to or even better than stainless steel wire. It has good biocompatibility and is suitable for implantation in the human body.

Ordinary carbon steel wire is prone to rusting.

5. Excellent fatigue performance

Under repeated bending cycles, nickel titanium is not easily broken; Repeated bending of ordinary steel wire can easily lead to metal fatigue fracture.

Nitinol Wire 

6. Disadvantages comparison (convenient for you to choose)

-Nickel titanium: expensive, low modulus (soft stiffness), performance greatly affected by temperature, difficult processing and welding;

-Ordinary steel wire: cheap, high hardness, high rigidity, not affected by temperature, simple processing.

In general

Ordinary steel wire: hard, easily bent due to large deformations, relying on rigidity to exert force;

Nickel titanium alloy wire: soft, capable of large deformation and rebound, able to remember shape, output sustained and stable soft force, corrosion-resistant and fatigue resistant, but expensive.

Pengchengrui Technology Nickel Titanium Alloy Wire in Huizhou City, relying on mature technology to strictly control material indicators, has a complete range of 0.1-1.0mm specifications, and meets the needs of medical grade biocompatibility and industrial superelasticity. After large deformation, it can quickly rebound and is not easily broken by repeated bending. It is suitable for medical guide wires, underwear support steel rings, digital accessories, and various spring accessories. Stable supply, able to provide sample testing to help customers improve the durability and user experience of their products, is the preferred supplier of nickel titanium wire in multiple industries.