Machining/Grinding Nitinol

CiDRA® Precision Services, LLC has years of experience manufacturing micron level tolerance products from Nitinol. We leverage our in-depth dicing, drilling, milling, grinding, and polishing capability to manufacture the highest quality Nitinol products.

Whether you need prototypes or volume production, CiDRA® Precision Services, LLC is here to help. Please contact us to discuss your applications.

About Nitinol

Nitinol is the name used for the nickel titanium alloy class of shape memory alloys (SMAs). These materials have a relatively low yield strength in the martensite phase, and therefore can be easily bent and shaped into desirable configurations. However, heating Nitinol induces a transformation to the austenite phase, causing it to revert to is originally shape. Nitinol will generate considerable force if it encounters resistance when trying revert to its original form, making this material useful for force and displacement actuation devices. Heat can be applied by running electrical current through the device and taking advantage of its natural electrical resistance to increase temperature.

Nitinol Applications

  • Actuators
  • Debulkers
  • Dental Drills
  • Ground wires
  • Guide wires
  • Needles
  • Slotted tubes
  • Threaded delivery wires
  • Valves

Nitinol Properties

 

Units

Austenite Phase

Martensite Phase
Melting Point C 1240 - 1310 1240 - 1310
Strain Point C
Max Use Temperature C
Thermal Conductivity W/(m K) 18 8.6
Specific Heat  J/(K kg) 470 - 620 470 - 620
Coefficient of Thermal Expansion 1/C (x10^-6) 11 6.6
Moh Hardness
Vickers Hardness kg/mm^2 350 - 440
Knoop Hardness kg/mm^2
Brinell Hardness kg/mm^2
Rockwell Hardness kg/mm^2
Density g/cm^3 6.4 - 6.5 6.4 - 6.5
Compressive Strength MPa
Tensile Strength MPa 700 - 1100 (1) 700 - 1100 (1)
Elastic Limit MPa
Yield Strength MPa 200 - 800 150 - 300
Bending Strength MPa
Fracture Toughness (KIC) MPa m^1/2
Young's Modulus GPa 83 28 - 41
Shear Modulus GPa
Poisson's ratio 0.3 - 0.33 0.3 - 0.33
Resistivity ohm cm 1x10^-4 1x10^-4
(1) - Fully annealed.  Work hardened strength is 1300 to 2000 Mpa
The information provided in this table is for room temperature only, and is a compilation of publicly available data.  This information is provided for comparison purposes only, and is not intended to be warrantable.   Further, CiDRA® Precision Services, LLC disclaims any and all liability from errors, inaccuracies, or omissions.

 

Please contact us if you would like to discuss your Nititol dicing, drilling, milling, grinding, polishing or any other machining applications.