Product Introduction
Nickel Titanium, commonly known as Nitinol (NiTi), is a unique shape memory alloy (SMA) known for its exceptional mechanical behavior and functional properties.
These remarkable properties originate from a thermoelastic martensitic phase transformation, which enables the material to undergo reversible structural changes between the austenite and martensite phases.
Because of its high elasticity, fatigue resistance, corrosion resistance, and biocompatibility, Nitinol is widely used in medical devices, industrial components, and smart mechanical systems.
Typical Chemical Composition
Element | Content |
Nickel (Ni) | 55% – 56% |
Titanium (Ti) | 44% – 45% |
Even minor variations in nickel content can significantly influence:
Transformation temperatures
Superelastic behavior
Mechanical performance
Precise composition control is therefore critical in Nitinol production.
Superelastic Nitinol
Superelastic Nitinol is also referred to as pseudoelastic Nitinol. This type of alloy can undergo large deformation and return to its original shape immediately after unloading without the need for heat activation.
Characteristics
Extremely high recoverable strain (up to ~8%)
Excellent kink resistance
High flexibility
Stable force over a wide deflection range
Outstanding fatigue resistance
Applications
Superelastic Nitinol is commonly used in:
Medical guidewires
Orthodontic archwires
Fishing leaders
Flexible frames and mechanical components
Precision elastic devices
Shape Memory Nitinol
Shape memory Nitinol has the ability to recover a pre-programmed shape when heated above its transformation temperature (Af).
This property allows the material to perform temperature-triggered mechanical movements, making it ideal for smart devices and actuators.
Characteristics
Recovers a preset shape when heated
Provides controlled actuation force
Suitable for temperature-sensitive applications
Repeatable phase transformation cycles
Applications
Shape memory Nitinol is widely used in:
Actuators
Thermal control devices
Mechanical coupling systems
Smart mechanical components
Industrial automation systems
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