Elastic Ni-Ti Shape Memory Alloy Wires

  Density (g/cm^3)

6.45

Melting point (°C )

1240-1310

Specific heat capacity( kJ/(kg·°C) 

0.46

Coefficient of thermal conductivity 

  (W·m-1·K-1) 

10

Resistivity  (10-6 Ω·m)

80

Expansion coefficient  (10-6 Ω·K-1 )

10.4

Elastic modulus (GPa)

40-80

HV

180-200 (low-temperature metallography)

200-350 (high-temperature metallography)

Tensile strength  (MPa)

700-1100

Yield strength 

50-200 (low-temperature metallography)

100-600 (high-temperature metallography)

Elongation  δ %

20-60

phase transition temperature (Af / °C)

-10-100

Recovery response variable %

8,  6,  2 , <0.5

Utmost service temperature (°C )

Af +60,  250

Maximum recovery stress  (Mpa)

680

Alloy

Chemical

composition

A_f

(Fully annealed)

Min. elongation to failure [%]

Max. Residual

 elongation

after 6%

strain [%]

Main Applications

Specifications

Superelastic

Ni-Ti alloy

TiNi-SS

Ti-50.8at%

-5°C ± 5°C.

10

0.1

Eyeglass Frames, Cellular Phone Antennae, Bra Underwire

Q/XB1516.2

Q/XB1516.2

TN3

 TNC

TiNiVAl

TiNiCr

-40°C ~50°C

10

0.1

Body temperature

Ni-Ti alloy

TiNi-YY

Ti-50.7at%Ni

Functional Af=33 ± 3

15

0.1

Implantable devices,Bone staples

Vascular Stents

ASTM 2063

Ti-Ni-01

55.6~55.8 wt%Ni

20 - 40

15

0.1

Guide wires, Stents

Orthodontic Arches

Q/XB1516.1

High temperature Ni-Ti alloy

Ti-Ni-02

54.8~55.5wt%Ni

45 - 95

10

0.1

Implantable active devices, Surgical tools, Thermostats Coffeepots

Q/XB1516.1

Diameter

0.1~0.2

>0.2~0.5

>0.5~1.0

>1.0~2.0

>2.0~4.0

>4.0~7.0

Tolerance

-0.025

-0.04

-0.06

-0.08

-0.10

-0.14