Nitinol Wire Superelastic Shape Memory Alloy for Medical Aerospace

Product Specification

Nickel titanium alloy wire, better known as Nitinol, is one of our top products, and we’re thrilled to deliver a material that’s as versatile as it is tough. This alloy, made from roughly equal parts nickel and titanium, is famous for its shape memory and superelastic properties, making it a go-to for industries like medical, aerospace, and robotics. Whether it’s bending without breaking or snapping back to shape with heat, our Nitinol wire handles the toughest challenges with ease. We’ve been perfecting it for years, ensuring every spool meets the highest standards for performance and reliability. Let’s dive into its materials, applications, industry trends, and why our company is your best pick for this incredible alloy.

The materials in our nickel titanium alloy wire are all about precision and quality. We use a near-equiatomic blend of about 50% nickel and 50% titanium, with trace elements like carbon (less than 0.05%) and oxygen tightly controlled to ensure biocompatibility and durability. We source high-purity raw materials from trusted, ethical suppliers to keep impurities low, preventing issues like fatigue failure. Our production process involves advanced melting, drawing, and heat treatment to fine-tune the wire’s transition temperature and mechanical properties. This results in a consistent, defect-free wire that’s ready for everything from medical stents to industrial actuators.

Nickel titanium alloy wire comes in two primary grades: superelastic and shape memory. Superelastic Nitinol, with a tensile strength of 800–1500 MPa, is insanely flexible, recovering up to 8% strain without permanent deformation, perfect for medical guidewires or springs. Shape memory Nitinol, with 500–1000 MPa strength, returns to its original shape when heated above its transition temperature (0–100°C), ideal for actuators. Compared to pure nickel like Nickel 200, Nitinol’s unique properties make it a star in dynamic applications. We offer custom diameters, from 0.05mm for precision medical devices to 5mm for robust industrial uses, all meeting ASTM F2063 standards for quality and biocompatibility.

The benefits of Nitinol wire are hard to beat. Its shape memory effect lets it return to a pre-set shape when heated, making it perfect for smart actuators or orthodontic wires. Superelasticity allows it to stretch and recover instantly, ideal for stents or flexible components. Corrosion resistance is another major plus—its titanium-rich oxide layer stands up to bodily fluids, saline, and harsh chemicals. We’ve supplied wire for chemical processing equipment exposed to acidic environments, and it shows minimal degradation, outperforming traditional metals like steel. This durability means fewer replacements and lower costs, especially in high-stakes applications.

Industrial applications for nickel titanium alloy wire are incredibly diverse. In medical devices, it’s a powerhouse for stents, guidewires, and orthodontic wires, thanks to its biocompatibility and flexibility. Aerospace uses it for actuators and vibration dampers that handle extreme conditions. Robotics relies on Nitinol for smart actuators that move with precision. Automotive applications include safety systems like seatbelt mechanisms. Industrial sectors use it for springs, fasteners, and sensors, leveraging its shape memory for automation. From ultra-thin wires for minimally invasive surgery to thicker strands for heavy-duty actuators, our Nitinol wire adapts to any challenge.

The Nitinol wire market is booming, valued at $1.4 billion in 2025 and projected to reach $2.9 billion by 2033, with an 8.3% CAGR. Medical devices are the biggest driver, with minimally invasive surgeries and implants fueling demand. Robotics and aerospace are growing fast, needing lightweight, durable materials. Electric vehicles (EVs), expanding at 14% annually, use Nitinol in battery systems for thermal management. Sustainability is a key trend—recycled nickel and titanium are gaining traction, and we’re leading with eco-friendly sourcing. High-purity, biocompatible Nitinol is critical for advanced applications, and regulations are pushing for safer, more durable alloys. Price volatility in nickel and titanium is a challenge, but our stable supplier contracts keep costs predictable.

About Us:

Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications. 

For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.

Client Visits

Building Stronger Partnerships

We support all kinds of testing:

FAQs:

• What is nickel titanium alloy wire?
• Nickel titanium alloy wire, or Nitinol, is a shape memory and superelastic alloy made of roughly equal parts nickel and titanium, used in medical and industrial applications.
• What materials are used in nickel titanium alloy wire?
• It consists of approximately 50% nickel and 50% titanium, with trace amounts of carbon (<0.05%) and oxygen controlled for performance and biocompatibility.
• What are the key grades of nickel titanium alloy wire?
• Grades include superelastic (high flexibility) and shape memory (heat-activated shape recovery), tailored for specific transition temperatures and applications.
• What are the main industrial applications of nickel titanium alloy wire?
• It’s used in medical devices like stents, aerospace actuators, robotics, automotive safety systems, and industrial springs for its unique properties.
• How does nickel titanium alloy wire resist corrosion?
• Its titanium-rich oxide layer provides excellent resistance to corrosion in bodily fluids, saline, and harsh industrial environments.
• What are the industry trends for nickel titanium alloy wire?
• The market is growing at an 8.3% CAGR, driven by medical devices, robotics, and EVs, with a focus on sustainable sourcing and high-purity alloys.
• What is the tensile strength of nickel titanium alloy wire?
• Superelastic grades range from 800–1500 MPa, while shape memory grades range from 500–1000 MPa, depending on processing.
• How does the shape memory effect work in nickel titanium alloy wire?
•  It returns to a pre-set shape when heated above its transition temperature (0–100°C), ideal for actuators and medical devices.