Memory Alloy Drive Wires 0.18mm – Precise Bidirectional Motion

Description

Precision Micro-Motion Starts Here

Introducing our Light Oxidized State Memory Alloy Drive Wire, expertly engineered with a fine diameter of 0.18mm. Designed for high-precision micro-mechanical systems, this bidirectional drive wire offers reliable, powerful, and repeatable actuation where space is limited and performance is non-negotiable.

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Built on Superelastic Nitinol

At the heart of these advanced memory alloy drive wires lies superelastic Nitinol—a unique nickel-titanium alloy known for its extraordinary mechanical behavior. We choose only premium medical and actuator-grade Nitinol to ensure optimal flexibility, fatigue resistance, and bidirectional force transmission.

Thanks to its superelasticity, the wire bends and recovers instantly—no permanent deformation, no need for heat. It acts like a mechanical spring, enabling smooth, efficient motion in both directions. This makes it ideal for applications that demand continuous, reversible actuation in confined environments.

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Why Light Oxidized Surface Matters

A proprietary light oxidation process forms a specialized surface layer on the wire. This layer reduces surface friction, resulting in smoother travel through catheters, lumens, or actuator guides. It also enhances biocompatibility and protects the Nitinol core, extending the lifespan of the drive wire without compromising flexibility or motion precision.

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Ultra-Fine Yet Incredibly Strong: 0.18mm Diameter

With a precise outer diameter of 0.18mm, these memory alloy drive wires are tailored for ultra-miniaturized designs. Despite their small size, they deliver robust force output and structural durability. Our strict quality control ensures each spool meets tight dimensional and performance tolerances, essential for integration into medical and robotic micro-systems.

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Where Memory Alloy Drive Wires Excel

• Medical Devices & Minimally Invasive Surgery
  These wires serve as internal control elements in micro-catheters and endoscopic tools. They enable accurate tip steering in neurovascular and cardiovascular systems, thanks to their biocompatibility and exceptional kink resistance.

• Micro-Robotics & Precision Actuators
  Perfect for compact robotic joints, micro-grippers, and instrument stages. The bidirectional motion and high power-to-size ratio make these wires ideal for repeated precision movements.

• Fluidics & Micro-Valve Systems
  Used to actuate miniature valves in analytical instruments, fuel systems, and drug delivery devices. The consistent force and reliability ensure precise flow control at microscopic levels.

• Optical Systems & Fiber Alignment
  Enables accurate positioning of optical components in constrained assemblies. Ideal for telecom, sensor alignment, and laser optics platforms.

• Consumer Electronics & Micro-Haptics
  These wires provide silent actuation for tactile feedback and miniature component movement in next-gen smart devices.

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What Makes Shape Memory Alloys So Powerful?

Nitinol Memory alloy drive wires harness two wonderful properties:

• Shape Memory Effect (SME): The wire can be deformed when cold and recover its shape when heated—a valuable trait for deployable medical or mechanical components.

• Superelasticity (SE): At room temperature, the wire bends far more than regular metals and snaps back instantly—ideal for continuous motion, stress management, and tight-space applications.

These capabilities offer unique advantages:

• Extreme flexibility and kink resistance

• High actuation force in micro-scale designs

• Excellent fatigue resistance over thousands of cycles

• Biocompatibility for medical-grade applications

• Quiet, smooth operation without motors or gears

 

•Diameter & Tolerance

Diameter(mm)	Tolerance(mm)	Diameter(mm)	Tolerance(mm)	Diameter(mm)	Tolerance(mm)
4.000-2.000	±0.025	0.350-0.260	±0.010	0.08-0.050	±0.005
2.000-1.000	±0.020	0.260-0.150	±0.007	0.050-0.025	±0.005
1.000-0.350	±0.010	0.150-0.080	±0.005	0.025-0.018	±0.003

•Mechanical properties

Max force(N)	Tensile(MPa)	Elongation %	Upper stress(MPa)	Residual strain(WT%)	At temp
Base on diam	≥1000 (1350)	≥10 (15)	≥400 (460)	<0.5 55.96	(10±10)
Base on diam	≥1000 (1350)	≥10 (15)	≥400 (460)	<0.5 56.1	(-30±10)
Base on diam	≥1000 (1350)	≥10 (15)	≥400 (460)	<0.5 50.0	(60±10)

 

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