Nitinol Superelastic Shape Memory Alloy Wire
Material:nitinol alloy Diameter:0.1-3.0mm Suraface:black/polished MOQ:1kg
Product Introduction
Product Overview
Nitinol wire is a high-performance nickel-titanium (NiTi) shape memory alloy known for its unique combination of:
Shape memory effect
Superelasticity
Excellent corrosion resistance
High fatigue resistance
Nitinol (Nickel Titanium Alloy) belongs to the family of shape memory alloys (SMA). Its extraordinary properties are produced by a thermoelastic martensitic phase transformation inside the material structure.
Material Standard
ASTM F2063-18
GB24627-2009
Chemical Composition
Nitinol alloys are typically composed of:
Nickel (Ni): 55% – 56%
Titanium (Ti): 44% – 45%
Small composition changes can significantly affect:
Transformation temperature
Superelastic performance
Shape memory characteristics
Specifications
Item | Details |
Diameter Range | φ0.05 mm – 7.0 mm |
Temperature Range | -40 °C ~ 95 °C |
Shapes | Round / Square / Flat / Rope |
Surface Options | Black / Light Oxide / Pickling / Polished |
Surface State Options
Black Oxide Surface
Industrial standard oxide finish with good dimensional stability.
As-Cleaned Surface
Cleaned surface suitable for general industrial applications.
Medical Grade Polished Surface
High surface quality for:
Medical devices
Surgical instruments
Orthodontic applications
Centerless Ground Surface
High precision dimensional tolerance and smoothness.
Main Features
Shape Memory Effect
Nitinol can recover its original pre-set shape after deformation when heated above its transformation temperature.
Superelasticity
Nitinol exhibits exceptional recoverable strain and flexibility, acting like a "super spring."
Benefits include:
High elasticity
Excellent kink resistance
Long fatigue life
Lightweight & Compact
Compared with traditional actuators or motors:
Smaller size
Lower weight
Silent operation
Easier integration
Corrosion Resistance
Excellent resistance to:
Moisture
Oxidation
Many chemical environments
Suitable for medical and industrial applications.
Application Types of Nitinol
1. Free Recovery
The wire is deformed at low temperature and recovers its original shape after heating.
2. Constrained Recovery
Recovery movement is mechanically restricted, generating force or stress output.
3. Work Production
The alloy performs mechanical work while returning to its original shape.
4. Superelasticity
The material behaves like a highly flexible spring with exceptional recoverable deformation.
Applications
Medical Industry
Orthodontic wires
Surgical implants
Medical guide wires
Stents
Minimally invasive devices
Consumer Products
Eyeglass frames
Flexible wearable components
Electronics & Optical Systems
Nitinol actuator wire can help SMA OIS systems reduce blur caused by hand shake and improve low-light photography performance.
Industrial Applications
Actuators
Precision mechanical devices
Robotics
Automation systems
Nitinol Actuator Wire Characteristics
Nitinol SMA actuator wire behaves similarly to biological muscle:
Contracts when electrically heated above transition temperature
Returns to original length after cooling
Operates silently
Can replace:
Small motors
Solenoids
Mechanical actuators
Advantages
Excellent superelasticity
Shape memory capability
High fatigue resistance
Corrosion resistant
Lightweight
Silent operation
Long service life
High precision performance
Customization
Custom production is available according to:
Drawings
Required AF temperature
Surface condition
Diameter tolerance
Shape requirements
Medical or industrial standards
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