Nitinol, a unique metal alloy primarily composed of nickel (Ni) and titanium (Ti), is renowned for its exceptional properties, including the remarkable abilities of shape memory and superelasticity. Superelasticity, one of its hallmark features, enables Nitinol, including Nitinol tubes, to spontaneously revert to its original shape after significant deformation within a specific temperature range, typically just above its transformation temperature (Tg), without the need for external heating. This property renders Nitinol highly versatile for a range of applications.
Our offering exclusively includes Nitinol tubes characterized by their Superelastic Effect, which is defined as a reversible response to temperature changes arising from a phase transformation between the austenitic and martensitic crystal phases.
The composition of the Nitinol tubes we manufacture complies with the requirements of ASTM F2063 standards.
Chemical Composition:
Component
wt %
Ni
54,50-57,00
C
≤0.050
Co
≤0.050
Cu
≤0.050
Cr
≤0.010
H
≤0.005
Fe
≤0.050
Nb
≤0.025
N + O
≤0.050
Ti
balance
The Active Austenite Finish Temperature (active Af) of the completed tube, having an outer diameter within the 0.25 to 7.0 mm (0.01 to 0.275 in.) range, should be determined through the bend and free recovery technique outlined in Test Method ASTM F 2082-15, applied to representative full-round tube sample(s).
The mechanical properties of the nickel-titanium (Nitinol) tube are tested in accordance with ASTM F2516-18 standard at a temperature range of 20°C to 24°C.
Condition
UTS σb MPa
Elongation δ%
Upper Plateau Stressσload MPa
Active Af ℃
Permanent Set (after 6% strain)
Superelastic
≥1000
≥10
≥380
＜20
≤0.3
Typically, we offer the following surface treatments for our Nitinol tubes:
For the outer surface: Black oxide;Center-less Ground.
For the inner surface: Etched;Oxide.
However, we are also open to customization based on customer requirements. Please feel free to contact us to discuss your specific needs. We are committed to accommodating your requirements to the best of our ability.
Nominal Measurements and Tolerances for Nitinol Tubes
* Other variations in OD and ID can be discussed with Guangdong Metal Corporation.
OD(mm)
OD Tolerance(mm)
ID Tolerance(mm)
Wall Thickness Range(mm)
Wall Thickness Tolerance(mm)
0.2≤OD≤0.5
±0.002
±0.005
0.025≤WT≤0.12
±0.003
0.5＜OD≤1.0
±0.005
±0.008
0.025≤WT≤0.30
±0.005
1.0＜OD≤3.0
±0.010
±0.010
0.025≤WT≤0.40
±0.008
3.0＜OD≤6.0
±0.010
±0.015
0.05≤WT≤1.50
±0.008
6.0＜OD≤9.0
±0.015
±0.020
0.07≤WT≤2.00
±0.010
9.0＜OD≤12.0
±0.020
±0.020
0.10≤WT≤2.00
±0.010
12.0＜OD≤15.0
±0.020
±0.030
0.10≤WT≤3.00
±0.010
Here are specific product examples of Nitinol tube applications in different industries:
1. Medical Industry a. Coronary Stents
b. Neurovascular Stents
c. Guidewires
2. Aerospace and Aviation a. Aircraft Actuators b. Precision Control Systems 3. Robotics a. Robotic Grippers b. Exhaust Valve Actuators 4. Automotive a. Exhaust Valve Actuators 5. Consumer Goods a. Eyeglass Frames 6. Oil and Gas Industry a. Downhole Tools 7. Scientific Instruments a. Micro-Positioning Stages b. Micro-actuators
Why Choose Our NiTi Tubes?
Super-Elasticity: Our NiTi tubes offer exceptional flexibility and resilience, ensuring kink-free performance even in the most demanding conditions.
Shape Memory: With their remarkable shape memory property, our tubes return to their original form, maintaining precision and reliability.
Tailored to Your Needs: We take your specifications seriously. From receiving your drawing to delivering a product, our efficient process takes just around 40 days, ensuring your project stays on track.
Explore the possibilities with our NiTi tubes, designed to meet your exact requirements. Contact us today to discuss your project and experience the quality and precision that define our products. Elevate your innovation with us, your trusted Nitinol tube manufacturer.
