Nitinol is well known for its thermo-mechanical properties of super elasticity and shape memory effect.
Nitinol Strip & Foil (Rolled from Flat Wire), ASTM F2063 (Chemistry)
Nitinol (NiTi) Applications
Heat engines, resilient glass frames, mechanical watch springs, temperature control system, couplings, golf club insert, biomedical and medical uses, cell-phone technology: retractable antenna, microphone boom
Nitinol is well known for its thermo-mechanical properties of super elasticity and shape memory effect. Shape memory refers to the ability of Nitinol to undergo deformation at one temperature, then recover its original, under formed shape upon heating above its transformation temperature. Super elasticity occurs at a narrow temperature range just above its transformation temperature; in this case, no heating is necessary to cause the under formed shape to recover, and the material exhibits enormous elasticity, some 10-30 times that of ordinary metal.
Nickel: 55 - 56%
Titanium: 44 - 45%
Density: 0.2633 lbs/in3, 6.45 g/cm3
Electrical Resistivity: 0-cm
Austenite: 82 x 1 o-6
Martensite: 76 x 1 o-6
Thermal Conductivity, W/cm°C
Mean Coefficient of Thermal Expansion, in/in/° F (µm/m•K), 80 - 200 °F (27 - 93 °C) Austenite: 6.1 x 10·6 (11)
Martensite: 3.6 x 10·6 (6.6)
Modulus of Elasticity, ksi (MPa)
Austenite: 10.08 - 12.04 x 103 (75 - 83 x 103)
Martensite: 4.06 - 5.80 x 103 (28 - 40 x 103)
Melting Point: 2930 ° F (1310 °C)
Wire - Profile, Round, Flat, Square
Mechanical Properties at Room Temperature
Properties: Annealed Typical
Ultimate Tensile Strength: 130 KSI (895 MPA)
Yield Strength (0.2 Offset):
Austenite: 28 - 100 KSI (195 - 690 MPa)
Martensite: 10 - 20 KSI (70- 140 MPa)
Elongation: 25 - 50%
Properties: Tempered Typical
Ultimate Tensile Strength: 275 KSI (1900 MPA)
Elongation: 5 - 10%
* For more detailed information contact Ulbrich Shaped Wire Technical Service.
Corrosion Resistance of Nitinol
Refer to NACE (National Associate of Corrosion Engineers) for recommendations.
Oxide Free (Oxides removed mechanically or chemically)
Limitation of Liability and Disclaimer of Warranty: In no event will Ulbrich Stainless Steels & Special Metals, Inc., be liable for any damages arising from the use of the information included in this document or that it is suitable for the 'applications' noted. We believe the information and data provided to be accurate to the best of our knowledge but, all data is considered typical values only. It is intended for reference and general information and not recommended for specification, design or engineering purposes. Ulbrich assumes no implied or express warranty in regard to the creation or accuracy of the data provided in this document.