





At SIZEN, we offer high-performance nitinol rods and bars designed to meet the demands of critical applications. Known for their unique shape memory and superelasticity, our nitinol rods and bars are ideal for industries where flexibility, strength, and reliability are crucial.
These nitinol rods are particularly well-suited for use in aerospace hydraulic connectors, high-stretch elastic components, and bridge vibration dampening systems. Our nitinol rods are designed for corrosion resistance, high fatigue strength, and consistent performance even in harsh environments.
Available in customizable sizes, lengths, and finishes, our nitinol products can be tailored to meet the precise requirements of your project. Contact us today to get a quote.
Our Nitinol Rod Specifications
Nitinol Rod Information
- Material: Titanium Nickel Alloy
- Standards: ASTM F2063
- Diameter: 7.0-90 mm
- Surface:: Bright Finish, Black Finish, Polished Finish
- Density: 4.51 g/cm³
- Melting Point: 1668 °C
- Boiling point: 3287 °C
Nitinol Rod Dimensions Range
| Diameter | Diameter Tolerance | Length Range | Surface Finish |
|---|---|---|---|
| 7-10 mm | 0.15 | ≤2000 mm ±3mm | Bright Finish, Black Finish, Polished Finish |
| 10-20 mm | 0.2 | ||
| 20-50 mm | 0.4 | ||
| 50-90 mm | 0.6 |
Note: More forms, sizes, and specifications are available for custom order.
Nitinol Material Chemical Composition
| Element | Chemical Composition (wt%) |
|---|---|
| Nickel | 54.5-57% |
| Carbon | ≤0.05% |
| Cobalt | ≤0.05% |
| Copper | ≤0.01% |
| Chromium | ≤0.01% |
| Hydrogen | ≤0.005% |
| Iron | ≤0.05% |
| Niobium | ≤0.025% |
| Nitrogen | ≤0.005% |
| Oxygen | ≤0.04% |
| Titanium | Balance |
Why Choose Our Nitinol Rod

High-Quality Materials
High purity nickel and titanium

Customized Solutions
Tailored for specific project needs.

Precision Manufacturing
Precise Dimensions, dependable Performance

Superior Surface Quality
Smooth surfaces with Ra ≤ 0.1 μm

Expert Support
Professional guidance readily available.
5 MAIN REASONS TO CHOOSE US
1
High-Quality Materials
We use top-quality materials that undergo strict third-party testing. This ensures the correct chemical composition, consistent transformation temperature, and reliable performance.
2
Customized Solutions
We tailor nitinol rods to meet your specific needs, including adjustments to flexibility, shape memory, corrosion resistance, oxygen content (50–400 ppm), surface condition, and dimensions.
3
Precision Manufacturing
Crafted to meet the strictest tolerances, our nitinol rods guarantee precise performance, making them ideal for industries requiring exact specifications.
4
Superior Surface Quality
We provide smooth surfaces with Ra ≤ 0.1 μm, and offer various treatments such as polishing, pickling, and oxidation to meet specific requirements for different applications.
5
Expert Support
Our team of experts is here to provide personalized guidance and solutions, helping you select the ideal nitinol rod for your exact requirements.
Unique Properties of Nitinol Rod

Shape Memory Effect
Nitinol rods can remember their original shape and return to it after being deformed when heated. This makes them ideal for applications like aerospace hydraulic connectors, where flexibility and precision are crucial.

Superelasticity
Nitinol rods are superelastic, meaning they can stretch and bend without breaking. This property makes them perfect for elastic connectors and other parts that need to stay flexible under stress, like shock-absorbing components.

Corrosion Resistance
Nitinol naturally resists corrosion, making it a durable choice for hydraulic connectors and other parts exposed to moisture or harsh conditions, especially in aerospace and marine applications.

Biocompatibility
Nitinol's biocompatibility ensures it is safe for use in medical applications, including implants and devices that interact with the human body. This property makes it a preferred choice for surgical tools, stents, and other bio-sensitive products.

Non-Magnetic
As a non-magnetic material, Nitinol rods are ideal for applications where magnetic interference is a concern, such as in medical devices or sensitive electronics.

Excellent Shock Absorption
One of the standout features of Nitinol rods is their superior shock-absorbing capabilities. Their ability to absorb and dissipate energy under stress makes them perfect for bridge vibration dampening and other engineering applications where movement or impact needs to be mitigated.

Wear Resistance
The material also demonstrates excellent wear resistance, ensuring long-lasting performance and reliability even under repetitive motion or friction, such as in robotic actuators or mechanical connectors.
Nitinol Rod Applications
Aerospace
Nitinol rods are widely used in aerospace for hydraulic connectors and other critical components. Their shape memory and superelasticity make them perfect for applications where flexibility, high strength, and reliability are essential, especially in harsh environmental conditions.


Bridge and Structural Engineering
Nitinol's shock-absorbing and vibration-dampening properties make it an excellent choice for bridge vibration dampening systems and other structural applications. It helps to reduce movement and prevent damage in critical infrastructure, providing long-term reliability and performance.
Automotive
Nitinol's ability to handle stress and deformation is beneficial for automotive components that require movement, such as active suspension systems and engine components. It can be used for shock absorption and precision connectors that improve overall vehicle performance.


Consumer Electronics
Nitinol rods are also used in consumer electronics, such as precision connectors and vibration-dampening parts, due to their corrosion resistance and non-magnetic properties. These applications benefit from their durability and long-lasting performance.
Robotics
In robotics, nitinol rods are used for flexible actuators and other moving parts. The combination of superelasticity and shape memory allows for precise movements and adaptability, making them essential in robotic systems that require both strength and flexibility.


Medical Devices
In the medical field, nitinol rods and bars are commonly used in stents, guidewires, and surgical tools. Their biocompatibility, combined with shape memory and flexibility, allows them to be used safely inside the human body.

FAQs About Nitinol Rod
What are the key properties of Nitinol rods?


Nitinol rods are known for their shape memory and superelasticity, meaning they can return to their original shape after being bent or deformed. They are also biocompatible, corrosion-resistant, and fatigue-resistant, making them ideal for medical devices, robotics, and aerospace.
What dimensions are available for nitinol rods?


We offer Nitinol rods with diameters from 5 mm to 90 mm, and lengths up to 2000mm. Custom dimenisons are available upon request.
Does SIZEN offer custom Nitinol rod fabrication?


Yes, we offer a range of customization options for Nitinol rods. This includes variations in dimensions (diameter, length), material properties (transformation temperatures, oxygen content, etc.), and surface finishes to suit diverse applications.
Can you provide custom transformation temperatures?


Yes, we can customize the transformation temperatures (Af) from -20°C to +100°C based on your specific requirements. Please provide your desired transformation temperature range during ordering.
How are Nitinol rods processed and manufactured?


Nitinol rods are made by melting nickel and titanium to form an alloy. The alloy is then processed through methods like extrusion or casting to shape the rods. Afterward, the rods undergo precise heat treatments to develop their shape memory and superelastic properties.
What are the surface finish options for Nitinol bars?


Nitinol bars can be supplied with different surface finishes, most commonly a bright or black finish. The choice of finish can affect properties like corrosion resistance and appearance.
What information do I need to provide for a custom Nitinol rod quote?


To get a custom quote, provide the size (diameter and length), tolerance, surface finish, and any specific material properties like shape memory or oxygen content.
What are the typical tolerances for SIZEN's Nitinol rods?


SIZEN's Nitinol bars typically have a tolerance of +0.15mm for diameters ranging from 7mm to 10mm. For other sizes or specific requirements, please contact us for customized tolerances.
What are your minimum order quantities (MOQs) for Nitinol bars?


MOQs may vary depending on the specific product. Please contact us to discuss your needs and determine the applicable MOQ.
Do you offer samples before placing a regular order?


Yes, we understand the value of testing before you buy. If you're interested in evaluating our Nitinol rods, we encourage you to request a sample. Please contact us with details about your intended use, the required dimensions, and any specific requirements. We'll then assess your request and provide information on sample availability and any applicable charges.
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