Shape Nitinol Wire

Wire Gauge

0.1 – 2.0 mm

Performance / Surface Finish

Polished

Super-elastic

Normal temperature grade available

Applications

Nitinol (Nickel-Titanium alloy) is widely used in both medical and industrial fields due to its outstanding mechanical and functional properties.

Medical Applications

Guide wires

Shape-set components

Orthodontic files

Arch wires

Stents, surgical tools (optional depending on product scope)

Industrial Applications

Fishing wires

Bra frame wires

Eyeglass frames

Precision springs

Glass industry components

Jewelry components

Key Features

1. Superelasticity
   Allows the material to undergo large deformation and return to its original shape upon unloading.

2. Biocompatibility
   Suitable for long-term implantation and contact with human tissue.

3. Shape Memory Effect
   Allows the wire to return to a preset shape when heated above its transformation temperature.

Technical Explanation

Nitinol is a Shape Memory Alloy (SMA) that relies on a reversible phase transformation between two solid phases:

1. Austenite (High Temperature Phase)

Stronger and stiffer

Stable at higher temperatures

Remembers the "programmed" shape

2. Martensite (Low Temperature Phase)

Softer and easily deformable

Forms when cooled

Can be deformed significantly without permanent damage

Phase Transformation Process

When Nitinol cools down, it transforms from Austenite → Martensite.

When it is heated, it transforms back Martensite → Austenite, recovering its original shape.
This reversible transformation enables two key properties:

Shape Memory Effect

Deform the material when it is in the martensitic state → heat it → it returns to its original shape.

Superelasticity

When deformed in the austenitic state, Nitinol instantly snaps back to its original shape after the load is removed.

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