Nitinol Coil Spring: High-Performance Shape-Memory Solutions
A Nitinol coil spring is a smart, high-performance component made from a nickel-titanium alloy (Ni-Ti) known for its shape memory effect. When heated to approximately 50°C, the Nitinol coil spring returns to its pre-set shape—making it an excellent choice for engineering prototypes, automation systems, and STEM education. Whether you’re working on robotics, medical devices, or thermal actuators, the Nitinol coil spring offers unmatched precision and durability.
🔍 Key Specifications
Each spring comes with a Teacher’s Guide and includes:
Wire diameter: 0.75 mm
Inner diameter: 20 mm
Length: 45 cm
Looking for straight options? Explore our Nitinol Memory Wire (HS-6, HS-9, HS-610), available in 3-inch samples or by the foot.
🔧 Why Choose a Nitinol Coil Spring Over Conventional Actuators?
Unlike traditional wax-based or bellows actuators, the Nitinol coil spring delivers:
✅ Leak-free operation — no liquids or gases
✅ 2–3x faster thermal response
✅ Direct heat activation for quick actuation
✅ Lower total system costs
✅ Minimal maintenance and long-term reliability
✅ Advantages of Nitinol Coil Spring
The Nitinol coil spring provides critical benefits for high-tech environments:
High reliability in dynamic systems
Rapid response to temperature change
Superior heat sensitivity
Works in compression, extension, or torsion modes
Leak-proof and safe for closed systems
Cost-effective across its full lifecycle
🛠 Typical Applications for Nitinol Coil Spring
The versatility of Nitinol coil springs makes them suitable for a wide range of industries:
Biomedical: Stents, surgical instruments, guidewires, orthodontic devices
Dental: Archwires and braces delivering controlled force
Aerospace: Actuators, hinges, deployable systems
Automotive: Thermal valves, actuators, engine systems
Robotics: Precision control in joints, grippers, and adaptive systems
Consumer Goods: Eyeglass frames, fishing gear, novelty mechanisms
🧩 Custom Nitinol Coil Spring Solutions
We offer fully tailored Nitinol coil spring designs for industry-specific needs:
Wire form: Round or flat (starting from 0.2 mm)
Memory type: One-way or two-way memory
Applications: Smart home systems, prosthetics, aerospace actuators, and more
🚲 Example: Bicycle Shock Absorbers Using Nitinol Coil Spring
| Model | Spring Stroke | Strength (lbs/in) | Natural Length | Inner Diameter | Wire Diameter | Laps |
|---|---|---|---|---|---|---|
| 350 x 3” | 3” | 350 | 6.38” | 1.38” | 0.366” | 8.5 |
| 300 x 3.5” | 3.5” | 300 | 7.09” | 1.38” | 0.366” | 9.6 |
| 275 x 3.4” | 3.4” | 275 | 6.89” | 1.38” | 0.354” | 9.5 |
🧪 Engineering Uses for Nitinol Coil Springs
Our Nitinol coil springs can be integrated into:
Compression spring assemblies
Tension/extension spring designs
Torsion spring systems for robotics or aerospace
Need a custom solution? We provide precision-engineered Nitinol coil spring designs tailored to your required dimensions and thermal performance.
📩 Contact us: jyxiangfeng@gmail.com
📦 Packaging & Global Shipping
To ensure safe international delivery:
Large coil springs: Shipped in reinforced wooden crates
Small/mid-size coils: Packed in durable cardboard cartons
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