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Baoji Eastsun Titanium Industry Co.,Ltd

Add.: South Of Baoti Road, High-Tech Zone, Baoji, China

Tel: 86-917-2662198

Fax: 86-917-3331336

E-mail:sales@bjdsti.com;

info@bjdsti.com

Website: www.tirods.com

Nitinol Memory Wire

Nitinol Memory Wire

Superelastic

1.Nitinol Alloys / Shape memory Nitinol alloys / Nitinol Memory Wire Nickel Titanium (also known as Nitinol or NiTi ) is in the unique class of shape memory alloys.

2.A thermoelastic martensitic phase transformation in the material is responsible for its extraordinary properties....

Product Details

Superelastic Nitinol Alloys / Shape memory Nitinol alloys  / Nitinol Memory Wire

Nickel Titanium (also known as Nitinol or NiTi) is in the unique class of shape memory alloys. A thermoelastic martensitic 

 

phase transformation in the material is responsible for its extraordinary properties. Nitinol alloys are typically made of 55%-56% 

Nickel and 44%-45% Titanium. Small changes in composition can significantly impact the properties of the material.There are

two primary categories of Nitinol. The first, known as "SuperElastic", is characterized by extraordinary recoverable strains and 

kink resistance. The second category, "Shape Memory" alloys, is valued for the Nitinol's capacity to recover a pre-set shape

when heated above its transformation temprature. The first category is often used for orthodontics (braces, wires, etc) and

eyeglasses. EST makes shape memory alloys, which are primarily useful for actuators, used in many different mechanical

devices. 


Chemical Composition

Reference ASTM F2063-2012 or GB 24627-2009;

 

Af Temperature Range

 -40C~85C

 

Nitinol Wire For Fishing


Diameter Range

OD0.08mm~OD7.00mm 


Surface State Options 

   • Oxide surface(including Black oxide,golden oxide, Blue oxide, Amber oxide) 
   • Etched surface
   • Polished surface 
   • Ground surface


 Tolerances

    4.000~2.000mm    ±0.020mm 
    2.000~1.000mm    ±0.015mm 
    1.000~0.350mm    ±0.010mm 
    0.350~0.260mm    ±0.007mm 
    0.260~0.150mm    ±0.005mm 
    0.150~0.080mm    ± 0.004mm 

 

Standard

ASTM F2063-05  Q/XB1516  Customer specified or Industry Standard

 

Nitinol wire Specifications

 

Alloy

Chemical

composition

Af

(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

 

Nitinol wire alloy code:

 

Regular binary NiTi alloy code, main composition, and typical active Af temperature (per ASTM F2063-05 or GB 24627-2009)

 

*The real active Af temperature may varies with actual composition, thermo-mechanical history of the products.

 

            Alloy code

A

B

S

C

D

E

Main composition mass%Ni

55.07

55.66

55.76

55.86

55.96

56.25

*Active Af after heat treatment, °C

75+/-5

28+/-5

23+/-5

11+/-5

5+/-5

-15+/-5


Regular ternary NiTi alloy code, main composition, and typical active Af temperature
 

 

Alloy code

F

G

I

J

H

Main composition 

mass%Ni

44.0Ti
55.8Ni
0.2Cr

44.0Ti
55.2Ni
0.8Cr

50.0Ti
45.0Ni
5.0Cu

50.0Ti
49.7Ni
0.3V

47.0Ni
44.0Ti
9.0Nb

*Active Af after 

heat treatment, °C

Similar to binary 

Nitinol  D with 

higher strength

Similar to ternary NiTi0.2Cr 

with higher strength

42+/-5

-32+/-6

142+/-10

 

*The real active Af temperature may vary with actual composition, thermo-mechanical history of the product.

 

We manufactures different medical grades (binary NiTi code D, C, S, E and ternary NiTiV code J) of Nitinol wire products 

 

available in either as straightened super-elastic (SE) wire or the cold worked (CW) condition wire ready for heat treatment.

 

Heat Treatment Status:

 
Medical grade Nitinol wire may be purchased in the super-elastic condition (SE) or the cold worked (CW), and after the correct

 

supper-elastica heater treatment will accommodate strain up to 8% without permanent kinking at body temprature.                        

 

Typical transformation temperature


The transformation temperatures and mechanical properties for typical grades of Nitinol are presented in the table below:

 

Nitinol code

Ni content
mass%Ni

As straightened super-elastic (SE)

Cold worked (CW)

Typical mdeical 

applications

sb 
MPa

Δ
%

sload MPa

sunload
MPa

Active Af
°C

Ingot As
by DSC As °C

sb 
MPa

Nitinol-D regular

55.96

> 1240

> 10

> 482

>138

+10 ~ +18

-30 ~ -10

> 1378

Guide wires, 

stents, shapeset 

parts, stone 

retrieval baskets, 

orthodontic files, etc

Nitinol-D High fatiqute

55.96

> 1240

> 10

> 448

>103

+14 ~ +22

-10 ~ +10

> 1378

For device require 

high cycling 

performance at 37°C

Nitinol-S regular

55.76

> 1000

> 10

> 400

Depand on Af

+15 ~ +28

-10 ~ +10

> 1150

For device with 

high fatigue file 

such as implants, 

stents & Shapeset 

parts

NiTiCr

55.8Ni-0.2~0.3Cr

> 1447

> 10

> 551

> 241

0 ~ +18

- 45 ~ - 15

> 1722

Non-medical 

applications for 

higher upper 

plateau stress 

at ambient 

temperatures, 

such as antenna, 

eyeglass frame etc.

Remark


All Mechanical Testing Conducted at 

22°C +/- 2°C; Permanent Set < 0.5% 

after strained to 8%; Elongation at 

Break > 10%

Elongation at break > 4%


 

Application


There are four commonly used types of applications for nitinol.

  • Free Recovery: nitinol is deformed at a low temperature, and heated to recover its original shape.

  • Constrained Recovery: The same, except that recovery is rigidly prevented, and thus a stress is generated.

  • Work Production: Here the alloy is allowed to recover, but to do so it must act against a force (thus doing work).

  • Superelasticity: As discussed above, here the nitinol acts as a super spring.

 Other applications

  • Nitinol is also popular in extremely resilient glasses frames. It is also used in some mechanical watch springs.

  • It can be used as a temperature control system; as it changes shape, it can activate a switch or a variable resistor to control the temperature.

  • It is used in cell-phone technology as a retractable antenna, or microphone boom, due to its highly flexible and mechanical memory nature.                                                            

  • It is used in some novelty products, such as self-bending spoons which can be used by amateur and stage magicians to demonstrate " psychic" powers or as a practical joke, as the spoon will bend itself when used to stir tea, coffe, or any other warm liquid.                                                                                               

  • It can also be used as wires which are used to locate and mark breast tumours so that following surgery can be more exact.

  • Due to the fact it can change shapes it is also used as a golf club insert.

  • Nickel titanium can be used to make the underwires for underwire bras.



Eastsun Titanium is one of the most reliable manufacturers and suppliers of nitinol memory wire. Our company has a professional factory from which you can wholesale nitinol memory wire products.
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