What is nitinol and SMA?
Shape memory alloys (SMAs) are alloys with “memory”: They can return to their original shape after being deformed via a change in pressure or temperature. SMAs are used in a wide variety of applications – including metallurgy, manufacturing, biomedicine, and children’s arts and crafts – and their uses are always expanding…A shape memory alloy is a material that undergoes a phase transformation when it experiences a mechanical stress or temperature change. When the conditions return to normal, the SMA “remembers” its original shape and reverts to it.
Nitinol Rod Physical Properties
- Appearance:this is a bright silvery metal.
- Density:The density of this alloy is 6.45 gm/ cm3.
- Melting Point:Its melting point is around 1310 °C.
- Resistivity:It has a resistivity of 82 ohm-cm in higher temperatures and 76 ohm-cm in lower temperatures.
- Thermal Conductivity:The thermal conductivity of this metal is 0.1 W/ cm-°C.
- Heat Capacity:Its heat capacity is 0.077 cal/ gm-°C.
- Latent Heat: this material has a latent heat of 5.78 cal/ gm.
- Susceptibility:Its Magnetic magnetic susceptibility is 3.8 emu- gm in high temperatures and 2.5 in low temperatures
Applications
- used for cell phone antenna
- used for children’s toys
- Nitinol Rod used for experimental materials
- Nitinol Rod used for glasses leg
- Nitinol Rod used for Women’s Sports Central
- Nitinol Rod used for arch wires instruments
- Nitinol Rod used for medical equipment, such as surgical stitching wire
- Nitinol Rod used for birth control loop and other areas of high-quality memory alloy wire.
How Does Nitinol Work?
Nitinol Shape Memory Alloys undergo a phase transformation in their crystal structure when cooled from the stronger, high temperature from (Austenite) to the weaker, low temperature from (Martensite). This inherent phase transformation is the basis for the unique properties of these alloys – in particular, Shape Memory and Superelasticity.
XOT metals manufactures nitinol rod from various grades of nickel titanium alloy commonly used in medical applications as well for other various applications. Medical grade nitinol material comprises nickel and titanium in nearly equal atomic weight percentages; per ASTM F2063, a nickel content of 54.5-57 wt% is specified for use in surgical implants. Nitinol with different compositions and phase transformation temperature can be used for other applications.
Specification of our Nitinol Rod
| Product Name | Nitinol Rod |
|---|---|
| Specification | ASTM F2063-12 |
| Af Temperature | -10°C to 120°C |
| Size | >0.2” Diameter |
| Surface | Black, Pickled, Polished |
| Other nitinol rod type | rod, bar,rectangular bar and other customized shape |
Advantages
- More than 16 years experience in the processing of nitnol products.
- The complete production line makes us control the quality from beginning to finishing.
- We have excellent research team that 5 engineers can always supply the exact solution for you.
- The testing items we do covering all properties you like.
- Customized sizes are available.
We can also program custom shape when heating nitinol rod, please contact us for any needs on nitinol.products.