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Superelastic Medical Grade Nitinol Wire 0.31mm Diameter for Medical Stents and Actuators

Name: Superelastic Medical Grade Nitinol Wire 0.31mm Diameter for Medical Stents and Actuators
Brand: Shanghai Tankii Alloy Material Co.,Ltd
SKU: Nitinol
Price: 40.00 USD
Availability: InStock

Product Details

Place of Origin: China

Brand Name: TANKII

Certification: ISO9001

Model Number: Nitinol

Payment & Shipping Terms

Minimum Order Quantity: 1~10kg

Price: USD30~50/kg

Packaging Details: Standard exoprt package

Delivery Time: 3~20 days

Payment Terms: T/T

Supply Ability: 1000 Ton per year

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Specifications

Description

Specifications

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Product Name:	Nitinol Round Wire 0.31mm 0.35mm Flat Wire 0.4mm * 0.55mm	Color:	Bright/black
Material Type:	Superelastic NiTi / Shape Memory NiTi	Elongation:	15% To 40%
Diameter:	0.02 -1.00 MM	Standardspecifications:	ASTM F2063
Insulation:	Bare	Af:	70°C
Supply Shape:	Coil Wire / Straight Wire	Application:	Medical, Actuator, Spring, Industrial

Product Name:	Nitinol Round Wire 0.31mm 0.35mm Flat Wire 0.4mm * 0.55mm
Color:	Bright/black
Material Type:	Superelastic NiTi / Shape Memory NiTi
Elongation:	15% To 40%
Diameter:	0.02 -1.00 MM
Standardspecifications:	ASTM F2063
Insulation:	Bare
Af:	70°C
Supply Shape:	Coil Wire / Straight Wire
Application:	Medical, Actuator, Spring, Industrial

Description

Superelastic Medical Grade Nitinol Wire 0.31mm Diameter for Medical Stents and Actuators

Nickel-Titanium Shape Memory Alloy Wire

Nickel titanium wire, also known as nickel titanium shape memory alloy wire, is a new type of material that combines the two unique functions of "shape memory" and "superelasticity". Its core component is approximately 55.4% to 57% nickel, with the remainder being titanium.

Its magic mainly stems from its unique physical properties:

Shape memory effect: It can deform freely at lower temperatures and automatically return to its original shape when heated to a specific temperature (phase transition temperature). The temperature range for phase transition is very wide, and can be customized from -20 ℃ to 100 ℃.
Superelasticity (pseudo elasticity): At room temperature, it has an elastic limit far beyond that of ordinary metals, and can instantly recover even after withstanding large deformations. For example, its recoverable expansion rate can reach over 20%, fatigue life can reach 10 times, and damping characteristics are 10 times higher than ordinary springs

Common Names and Grades

Grade	Name	Main Characteristics
NiTi	Nickel Titanium Alloy	General purpose nickel-titanium alloy
Nitinol	Nickel Titanium Naval Ordnance Laboratory	Common commercial name for nickel-titanium shape memory alloys
Superelastic NiTi	Superelastic NiTi	Superelastic nickel-titanium wire with high elastic recovery at room temperature
Shape Memory NiTi	Shape Memory NiTi	Shape memory nickel-titanium wire that returns to its original shape after heating
Medical Grade NiTi	Medical Grade NiTi	Nitinol nickel-titanium wire for medical devices
Actuator Grade NiTi	Actuator Grade NiTi	Nickel-titanium wire for actuators/drivers

Generally, we calculate the unit price based on the diameter, phase transition temperature (Af), surface condition, usage condition, and standard/application provided by the customer.

Main Chemical Content

Chemical	Content
Ni	54.5~57 wt%
Ti	Bal.

Key Parameter: Austenite Finish Temperature (Af)

The most commonly used parameter in purchasing and applications is the Af temperature (Austenite finish temperature).

Simple explanation:

Af below room temperature: The material usually shows superelastic behavior at room temperature.
Af above room temperature: The material is easier to deform at room temperature and recovers its shape after heating, showing shape memory behavior.

Common Af Temperature Ranges

Type	Af Temperature	Typical Applications
Superelastic type	Approx. -20°C to +20°C	Medical stents, eyeglass frames, elastic components
Low-temperature shape memory type	30°C-45°C	Temperature-control springs, toys, demonstration materials
Medium-temperature shape memory type	45°C-70°C	Actuators, switches, automatic reset structures
High-temperature shape memory type	70°C-100°C or higher	Special industrial temperature-control components

Main Features of Nickel Titanium Wire

Shape Memory Effect

Nickel titanium wire can be stretched or bent at a lower temperature, and then return to its preset shape when heated.

Superelasticity

Some nickel titanium wires can undergo large deformation at room temperature and then recover automatically.

Good Corrosion Resistance

Nickel titanium alloy forms a stable titanium oxide film on its surface, giving it good corrosion resistance, especially in medical and humid environments.

Good Biocompatibility

Medical-grade nickel titanium wire is widely used in implantable and interventional medical devices, such as:

Vascular stents
Orthodontic wires
Guide wires
Orthopedic fixation components

For medical applications, the material must meet relevant standards and certification requirements. Ordinary industrial-grade material should not be used as a substitute.

Relatively High Electrical Resistivity and Joule Heating Capability

Nickel titanium wire can be heated by electric current to reach its transformation temperature and generate mechanical movement. Therefore, it can also be used as a simple electrothermal actuator.

Applications of Nickel Titanium Wire

Medical devices
Dental orthodontics
Eyeglass industry
Industrial temperature control
Robotics and smart materials
Aerospace
Electronics and electrical appliances
Teaching and experiments

Product Images

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