What are the properties of Nitinol?

Nitinol is a metal alloy of nickel and titanium with unique properties, including superelasticity or pseudoelasticity and “shape memory” properties. That means nitinol can remember its original shape and return to it when heated. It also shows great elasticity under stress.

What are the properties of nickel titanium alloy?

4.4. 4.1 Ni-Ti Alloy

Property	Ni-Ti Alloy	Magnesium
Elastic modulus (GPa)	83 (austenitic phase) 28–41 (martensitic phase)	41–45
Yield strength (MPa)	195–690 (austenitic phase) 70–140 (martensitic phase)	65–100
Tensile strength (MPa)	895	207
Fracture toughness ( )	895	207

What property does Nitinol have and what are its uses?

Nitinol was developed by the U.S. Navy and stands for nickel titanium alloy. This metal is particularly useful for medical applications because it has thermal memory. This property allows stents to be made at a certain diameter, cooled, and then compressed onto a delivery system.

What is Nitinol wire used for?

Nitinol wires are used in model heat engines made for demonstration purposes. This material is used in temperature controls. Its shape changing properties can be used for activating a variable resistor or a switch for controlling the temperature. This metal is often used in mechanical watch springs.

What is Nitinol melting point?

1300 deg. C
Nitinol physical properties

Melting point	1300 deg. C (2370 deg. F)
Coefficient of thermal expansion	austenite	11.0E-6/deg. C (6.11E-6/deg. F)
martensite	6.6E-6/deg. C (3.67E-6/deg. F)
Specific heat	0.20 cal/g * deg. C (0.20 BTU/lb * deg. F)
Corrosion performance	excellent

What are some properties of Nitinol that make it so biocompatible for medical use?

In medical devices, Nitinol is popular due to its biocompatibility, superelasticity and fatigue and kink resistance (5). Nitinol is used to manufacture catheter tubes, guidewires, stone retrieval baskets, filters, needles, dental files and archwires and other surgical instruments (6).

Why is Nitinol a smart material?

Shape Memory Alloy Nitinol (or SMA wire) is made up of nickel and titanium. The wire has a memory and will return to its original shape if heated to above 90 degrees (centigrade). The material can also remember a shape and can be achieved by folding the wire to the desired shape and clamping it in position.

Does Nitinol work harden?

The combination of cold working and heat treatment (thermomechanical processing) is critical to attaining the desired properties in the material. During cold working fabrication operations, such as drawing or rolling, Nitinol alloys work harden very rapidly.

Where is Nitinol used in the body?

A particularly important use of Nitinol is in stents. Figure 1shows an illustration of stent application: normal blood flow in an artery (Figure 1(a)), decreased blood flow due to plaque (Figure 1(b)), and a stent placed to open the artery and restore blood flow (Figure 1(c)) (7).

What are SMA’s used for?

Nickel-titanium (NiTi) shape-memory alloys (SMAs) have been used in the manufacture of orthodontic wires due to their shape memory properties, super-elasticity, high ductility, and resistance to corrosion. SMAs have greater strength and lower modulus of elasticity when compared with stainless steel alloys.

What are the technical properties of nitinol?

Nitinol technical properties Nitinol or Nickel Titanium (also known as NiTi) is in the unique class of shape memory alloys. Nitinol shape memory alloys can be modified to a great extent by changes in composition, mechanical working, and heat treatment.

What is NiTiNOL 60?

NiTiNOL 60, or 60 NiTiNOL, is a Nickel Titanium alloy (nominally Ni-40wt% Ti) discovered in the late 1950s by the U. S. Naval Ordnance Laboratory (hence the “NOL” portion of the name NiTiNOL).

Does nitnitinol 60 exhibit shape memory effect (SME) properties?

Nitinol 60, when appropriately heat-treated, does not exhibit shape memory effect (SME) properties at normal ambient. It is 26% in density lower than steel for weight sensitive applications such as aircraft, satellites and spacecraft.