· 2018-04-11 · L S L 0 High Force L ow Force Spring force Increase-40 -20 0 20 40 60 0 50 Temperature [°C] Austenite Martensite % " ! 310/ 320/-20 0 20 40 60 80 120 0 5 10 20

SmartFlex®

Wire“100% quality controlled Shape

Memory Wire for microactuators”

General Features

£ The smallest powerfulelectrical actuator

£ Direct linear or angularmotion using a thin wire

£ The simplest solution

Simple mechanismwithout bulky gears

£ The silent solution

No noise emission duringactuation

£ Nature-like movement

Smooth and controlledaction

HIGHLIGHTS

0

0,5

1

1,5

2

2,5

3

3,5

4

4,5

5

0 1 2 3 4 5 6 7 8

Time [sec]

Str

oke [

%]

Electrical

0

0,5

1

1,5

2

2,5

3

3,5

4

4,5

5

0 1 2 3 4 5 6 7 8

Time [sec]

Str

oke [

%]

Electrical

pulse

currentLoad

C u r r en t s w it c h-o ffC u r r en t s wit ch- on

Load

Load

Contraction

Elo

ngation

Load

ProductDiameter

[µm]

Diameter

[inch]

Max

Force

[N]

Max

Stroke

Suggested

operating

Force [N]

Suggested

operating

Stroke

SmartFlex25 25 0,001 0,3

5%

0,1

<3,5%

SmartFlex50 50 0,002 1,2 0,3

SmartFlex76 76 0,003 2,7 0,8

SmartFlex01 100 0,004 4,7 1,3

SmartFlex015 150 0,006 10 2,7

SmartFlex02 200 0,008 19 5

SmartFlex03 300 0,012 42 12

SmartFlex04 400 0,016 75 21

SmartFlex05 500 0,020 118 33

SMA actuators present a very high specific working output confronting the other

actuator’s technologies

SMA S

traig

ht wire

WAX A

ctuat

ors

Magnetic

Sole

noid

SMA C

oil Spri

ngs

Therm

osta

t M

eta

ls

1

10

100

0,1 1 10 100

1000

1000

Ou

tpu

t (N

)

Weight (g)

0,01

Best efficiency as microactuators

Comparison of technologies

Typical electrical actuation

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SMARTFLEX SPRINGS AND WIRES 2018_Layout 1 10/04/2018 13:43 Pagina 1

1

1

1 -

Front -

SINCRO ORD 389 SAES 9 schede SMARTFLEX

SmartFlex®

Wire

The SAES Group

manufacturing companies

are ISO9001 certified and

the Italian companies are

also ISO14001 certified. Full

information about our

certifications for each

company of the Group are

available on our website at:

www.saesgroup.com

D.SMA.93.3.18

Resistivity of the material changes during martensitic transformation showing the

below behaviour

Resis

tivit

y (µΩ

cm

)

Temperature (°C)

80

85

95

110

100

105

0 20 40 60 80 100 120 140

90

80

85

95

110

100

105

0 20 40 60 80 100 120 140

90

Life cycles depend on a stress-strain trade-off.

A strain increase needs a stress decrease to achieve

a good fatigue performance

50

150

250

350

450

0 1 2 3 4 5

Strain [%]

Str

es

s [

MP

a]

cycles < 30k

cycles > 100k

30k < cycles < 100k

1Million cycles

Transformation temperature of a SmartFlex

wire loaded of different stress level

100

200

300

400

500

40 60 80 100 120 140

Temperature [°C]

Str

ess [

MP

a]

As

Af

Ms

Mf

°=

C

MPa

dT

d2.8

σ

AsMf

Ms Af

0

100

200

300

400

500

40 60 80 100 120 140

Temperature [°C]

Str

ess [

MP

a]

As

Af

Ms

Mf

°=

C

MPa

dT

d2.8

σ

°=

C

MPa

dT

d2.8

σ

°=

C

MPa

dT

d2.8

σ

AsMf

Ms Af

0

Transformation temperatures

Resistivity

Fatigue behavior

SAES Group

www.saesgroup.com

[email protected]© SAES Group. Printed in Italy. All rights reserved. SAES® and SmartFlex® are registered trademarks of SAES Group.

SAES Group reserves the right to change or modify product specifications at any time without notice.

oupgr


2

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SmartFlex®

Springs“Shape Memory Springs for

Actuators”

Springs vs. Wire

£ Higher Stroke

£ Lower Force

£ Indirect Heating

£ Sensor - Actuator

£ Customization

Applications

£ Thermal valves

£ Thermal actuators

£Antiscald devices

£ Mixing valve

£ Active air vents

£ Fire protection device

HIGHLIGHTSAs thermal-actuators SMA springs are very specific products. The combination of

composition, heat treatment and operating conditions permits to cover a wide range of

activation temperatures. Customized solutions may be developed to fulfill several

applications.

At low temperature the Martensite phase presents low force.

At high temperature the Austenite phase presents high force.

The spring moves continuously between such extreme positions in noiseless operation

with a typical hysteresis of 15-20°C.

As thermal-actuator SMA spring follows the typical hysteresis curve during

transformation according to the selected alloy.

Typical Hysteresis curve of BT (body Temperature)

Compression Spring

LS

L0

High Force

Low Force

Spring forceIncrease

-40 -20 0 20 40 60

0

50

100

Temperature [°C]

Austenite Martensite

Different Alloy for different activation temperature

from As=10°C to As=90°C

-20 0 20 40 60 80 120

0

5

10

20

30

15

25

35

100

Temperature [°C]

Str

oke [

mm

]

-20 0 20 40 60 80 120

0

5

10

20

30

15

25

35

100

Temperature [°C]

Str

oke [

mm

]

-20 0 20 40 60 80 120

0

5

10

20

30

15

25

35

100

Temperature [°C]

Str

oke [

mm

]

Alloy BD ◊ As 10°C



Alloy B ◊ As 60°C

Alloy BH ◊ As 90°C




Alloy B ◊ As 60°C

Alloy BH ◊ As 90°C

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3

3

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Front -


SmartFlex®

Springs

The SAES Group

manufacturing companies

are ISO9001 certified and

the Italian companies are

also ISO14001 certified. Full

information about our

certifications for each

company of the Group are

available on our website at:

www.saesgroup.com

SAES Group

www.saesgroup.com

[email protected]

© SAES Group. Printed in Italy. All rights reserved. SAES® and SmartFlex® are registered trademarks of SAES Group.

SAES Group reserves the right to change or modify product specifications at any time without notice.

D.SMA.100.3.18

Typical Dynamic Mechanical Thermal Spectroscopy (DMTS) analysis

of a SMA spring – Alloy BD

SmartFlex springs can be customized according to your design and application

requirements.

oupgr

Mechanical and functional characteristics

of some exemplifying compression spring

D [mm]

Mean Diameter

L0 [mm]

Free Length

d [mm]

Wire Diameter

F [N]

Typical Force

s [mm]

Typical Stroke

14 130 1,5 20 30

10 25 1,5 14 8

9 16 2,2 50 2

6 18 1,5 30 3

3 8 0,6 2 2

Available Ends under request

Typical behaviour of a SMA compression spring

Forc

eStroke

Bia

s Spr

ing

Austenite

Martensite

B

A

s

heat

ing

cool

ing

SMA SpringBias Spring

Stroke

BA

s

SMA SpringBias Spring

Stroke

BA

s

Force

SMA compression springs can be used as very fast and miniaturized thermal-actuators.

When heated above As (austenite start temperature) they expand developing an high

force.

SMA compression springs can be customized according to your design and application

requirements.

Mean Dia.D

Wire Dia.d

Pitch, p

Coil angle, α

FreeLength

Lo

Mean Dia.D

Wire Dia.d

Pitch, p

Coil angle, α

FreeLength

Lo

Plain Ends

Closed Ends

Closed EndsGround

SAES Group

www.saesgroup.com

[email protected]

-20 0 20 40 60 80

-1

0

1

3

5

2

4

6

100

Temperature [°C]

Str

ain

[m

m]

-40

Hysteresis @ constant Load


4

4

2 -

Back -


SmartFlex®

25 µm

m a k i n g i n n o v a t i o n h a p p e n , t o g e t h e r

oupgrSAES Group

www.saesgroup.com

[email protected]

Stroke vs Time

I 1st cycle I L 100 mm I 25°C I 70 mA I 170 MPa I

Str

oke (

%)

Time (s)

Cu

rren

t (m

A)

Str

oke (

%)

Time (s)

Cu

rren

t (m

A)

0

0.5

0

1

2

3

4

1.5

2.5

3.5

0 0.3

40

20

0.4 0.5 0.6

60

80

0

0.5

0

1

2

3

4

1.5

2.5

3.5

0 0.3

40

20

0.4 0.5 0.6

60

80

Cycle time vs Stress

I 25°C I 50 mA I 3,5% I

Stress (MPa)

Tim

e (

ms)

50

100

150 200 250 300 350

0

200

cycle

actuation

cooling

actuation cycle

heatingcooling

400

150

250

300

Cycle time vs Current

I 25°C I 170 MPa I 3,5% I

Tim

e (

ms)

Current (mA)

150

200

50

100

45

0

50 60 6555

250

7040

actuation

cooling

actuation cycle

heatingcooling

Cycle time vs Temperature

I 70 mA I 200 MPa I 3,5% I

Temperature (°C)

Tim

e (

ms)

-10

150

200

100

-400

250

-30 -20 0 10 20 30 40 50 60

300

-10-40 -30 -20 0 10 20 30 40 50 60

150

200

100

0

250

300

50

actuation

cooling

actuation cycle

heatingcooling

schede smartflex 2018_Layout 1 10/04/2018 13:36 Pagina 1

5

5

3 -

Front -


SmartFlex®

50 µm

Stroke vs Time

I 1st cycle I L 100 mm I 25°C I 160 mA I 170 MPa I

Str

oke (

%)

Time (s)

Cu

rren

t (m

A)

Str

oke (

%)

Time (s)

Cu

rren

t (m

A)

180

1

0

0.5

0

1

2

3

4

1.5

2.5

3.5

0.2

20

60

140

100

0.4 0.6 0.80.3 0.5 0.7 0.9 1

0

0.5

0

1

2

3

4

1.5

2.5

3.5

0.2

20

60

140

100

0.4 0.6 0.80.3 0.5 0.7 0.9


I 25°C I 130 mA I 3,5% I

Stress (MPa)

Tim

e (

ms)

200

400

150 200 250 350

0

300

600

800

400

200

400

150 200 250 350

0

300

600

800

400

actuation

cooling

actuation cycle

heatingcooling


I 25°C I 170 MPa I 3,5% I

Tim

e (

s)

Current (mA)

1,2

1,6

0,4

0,8

80 100

0

120 140 160

1,2

1,6

0,4

0,8

80 100

0

120 140 160

actuation

cooling

actuation cycle

heatingcooling


I 160 mA I 200 MPa I 3,5% I

Temperature (°C)

Tim

e (

ms)

-10

600

800

200

400

-400

1000

-30 -20 0 10 20 30 40 50 60

1200

-10

600

800

200

400

-400

1000

-30 -20 0 10 20 30 40 50 60

1200

actuation

cooling

actuation cycle

heatingcooling

D.SMA.94.2.18

The SAES Group manufacturing companies are ISO9001 certified and the Italian companies are

also ISO14001 certified. Full information about our certifications for each company of the Group

are available on our website at: www.saesgroup.com

© SAES Group. Printed in Italy. All rights reserved. SAES® and SmartFlex® are registered trademarks of SAES Group. SAES Group

reserves the right to change or modify product specifications at any time without notice.


oupgr


6

6

3 -

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SmartFlex®

76 µm

Stroke vs Time

I 1st cycle I L 100 mm I 25°C I 240mA I 170 MPa I

Str

oke (

%)

Time (s)

Cu

rren

t (A

)

Str

oke (

%)

Time (s)

Cu

rren

t (A

)

40

0.5

0

1

2

3

4

1.5

2.5

3.5

0 0.5 1 1.5 2 2.5 3 3.5

0.1

0.2

0.3

0.4

0

0.5

0

1

2

3

4

1.5

2.5

3.5

0 0.5 1 1.5 2 2.5 3 3.5

0.1

0.2

0.3

0.4


I 25°C I 200 mA I 3,5% I

Stress (MPa)

Tim

e (

ms)

100 150 200 250 350

0

300

400

800

1200

1600

50 400100 150 200 250 350

0

300

400

800

1200

1600

50 400

actuation

cooling

actuation cycle

heatingcooling


I 25°C I 170 MPa I 3,5% I

Tim

e (

ms)

Current (mA)

500

2000

2500

1000

1500

160 1800

200 220 240

500

2000

2500

1000

1500

160 1800

200 220 240

actuation

cooling

actuation cycle

heatingcooling


I 240 mA I 240 MPa I 3,5% I

Temperature (°C)

Tim

e (

ms)

-10

1000

1500

-400

2000

-30 -20 0 10 20 30 40 50 60

2500

500

actuation

cooling

actuation cycle

heatingcooling

SAES Group

www.saesgroup.com

[email protected] m a k i n g i n n o v a t i o n h a p p e n , t o g e t h e r

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7

7

4 -

Front -


SmartFlex®

100 µm

Stroke vs Time


Str

oke (

%)

Time (s)

Cu

rren

t (A

)

Str

oke (

%)

Time (s)

Cu

rren

t (A

)

0

0.50

1

2

3

4

1.5

2.5

3.5

0 1 2 3 5

0.1

0.2

0.3

0.5

0.4

0

0.50

1

2

3

4

1.5

2.5

3.5

0 1 2 3 5

0.1

0.2

0.3

0.5

0.4

4


I 25°C I 300 mA I 3,5% I

Stress (MPa)

Tim

e (

ms)

500

2500

1000

1500

50 100 150 200 250 350

0

300

2000

3000

400

500

2500

1000

1500

50 100 150 200 250 350

0

300

2000

3000

400

actuation

cooling

actuation cycle

heatingcooling


I 25°C I 170 MPa I 3,5% I

Tim

e (

ms)

Current (mA)

500

2000

2500

1000

1500

210 260 310 360

0

3000

500

2000

2500

1000

1500

210 260 310 360

0

3000

actuation

cooling

actuation cycle

heatingcooling


I 380 mA I 200 MPa I 3,5% I

Temperature (°C)

Tim

e (

ms)

-10

1000

1500

500

-400

2000

-30 -20 0 10 20 30 40 50 60

2000

2500

3500

-10

1500

-400

2000

-30 -20 0 10 20 30 40 50 60

2000

2500

3500

1000

500

actuation

cooling

actuation cycle

heatingcooling

D.SMA.95.2.18







oupgr


8

8

4 -

Back -


SmartFlex®

150 µm

Stroke vs Time


Str

oke (

%)

Time (s)

Cu

rren

t (A

)

Str

oke (

%)

Time (s)

Cu

rren

t (A

)

6

0

0.5

0

1

2

3

4

1.5

2.5

3.5

0 1 2 3 4 5

0.1

0.1

0.4

0.6

0.8

0.3

0.5

0.7

6

0

0.5

0

1

2

3

4

1.5

2.5

3.5

0 1 2 3 4 5

0.1

0.1

0.4

0.6

0.8

0.3

0.5

0.7


I 25°C I 600 mA I 3,5% I

Stress (MPa)

Tim

e (

ms)

1000

4000

2000

3000

50 100 150 200 250 350

0

300

5000

400

actuation

cooling

actuation cycle

heatingcooling


I 25°C I 170 MPa I 3,5% I

Tim

e (

ms)

Current (mA)

1000

4000

5000

2000

3000

400 450 500 550 650 7000

750

1000

4000

5000

2000

3000

400 450 500 550 650 7000

750600

actuation

cooling

actuation cycle

heatingcooling


I 750 mA I 200 MPa I 3,5% I

Temperature (°C)

Tim

e (

ms)

-10

3000

4000

1000

-400

5000

-30 -20 0 10 20 30 40 50 60

7000

2000

6000

3000

4000

1000

-400

5000

-30 -20 0 10 20 30 40 50 60

7000

6000

2000

actuation

cooling

actuation cycle

heatingcooling

SAES Group

www.saesgroup.com


oupgr


9

9

5 -

Front -


SmartFlex®

200 µm

Stroke vs Time

I 1st cycle I L 100 mm I 25°C I 1.1 A I 170 MPa I

Str

oke (

%)

Time (s)

Cu

rren

t (A

)

Str

oke (

%)

Time (s)

Cu

rren

t (A

)

0

0.5

1

2

3

4

1.5

2.5

3.5

0 1 2 3 5

0.5

1

1.5

2

4


I 25°C I 0.9 A I 3,5% I

Stress (MPa)

Tim

e (

s)

1

5

2

3

50 100 150 200 250 350

0

300

4

6

400

1

5

2

3

50 100 150 200 250 350

0

300

4

6

400

actuation

cooling

actuation cycle

heatingcooling


I 25°C I 170 MPa I 3,5% I

Tim

e (

s)

Current (A)

1

4

5

2

3

0,75 0.8 1

0

6

0.9 1.1

1

4

5

2

3

0,75 0.8 1

0

6

0.9 1.1

actuation

cooling

actuation cycle

heatingcooling


I 1,1 A I 200 MPa I 3,5% I

Temperature (°C)

Tim

e (

s)

-10

4

6

2

-40

0

8

-30 -20 0 10 20 30 40 50 60

10

12

-10

4

6

-40

0

8

-30 -20 0 10 20 30 40 50 60

10

12

2

actuation

cooling

actuation cycle

heatingcooling

D.SMA.96.2.18







oupgr


10

10

5 -

Back -


SmartFlex®

300 µm

Stroke vs Time


Str

oke (

%)

Time (s)

Cu

rren

t (A

)

Str

oke (

%)

Time (s)

Cu

rren

t (A

)

6

0

0.5

0

1

2

3

4

1.5

2.5

3.5

0 1 2 3 4 5

0.5

1

2

3

1.5

2.5

3.5

7 86

0

0.5

0

1

2

3

4

1.5

2.5

3.5

0 1 2 3 4 5

0.5

1

2

3

1.5

2.5

3.5

7 8


I 25°C I 1,8 A I 3,5% I

Stress (MPa)

Tim

e (

s)

8

50 100 150 200 250 350

0

300 400

2

6

4

10

8

50 100 150 200 250 350

0

300 400

2

6

4

10

actuation

cooling

actuation cycle

heatingcooling


I 25°C I 170 MPa I 3,5% I

Tim

e (

s)

Current (A)

6

10

8

1.2 1.4 1.80

1.6

4

2

2

6

10

8

1.2 1.4 1.80

1.6

4

2

2

actuation

cooling

actuation cycle

heatingcooling


I 2,1 A I 200 MPa I 3,5% I

Temperature (°C)

Tim

e (

s)

-10

10

15

-40

20

-30 -20 0 10 20 30 40 50 60

25

0

5

actuation

cooling

actuation cycle

heatingcooling

SAES Group

www.saesgroup.com


oupgr


11

11

6 -

Front -


SmartFlex®

300 µm with

silicon sleeve

Increased cooling time performances


I 25°C I 170 MPa I 3,5% I

0,0

0,5

1,0

1,5

2,0

2,5

2,6 2,8 3 3,2 3,4 3,6 3,8 4

Tim

e (

s)

Current (A)

cycle

cooling

actua on

Different cooling methods improving response time after actuation

Speed performance's increasing

Standard air convection 1:1

Solid Heat Sink Materials 2:1

Forced Air 4:1

Heat Conductive Grease 8:1

Silicon 10:1

Oil Immersion 25:1

Water with Glycol 100:1


I 3,5 A I 170 MPa I 3,5% I

0,0

1,0

2,0

3,0

4,0

5,0

6,0

-20 -10 0 10 20 30 40 50 60

Tim

e (

s)

Temperature (°C)

cycle

cooling

actua on

Stroke vs Time First cycle

I L 100 mm I 25°C I 3,5 A I 170 MPa I

0

1

2

3

4

5

0

0,5

1

1,5

2

2,5

3

3,5

4

0 1 2 3 4

Cu

rre

nt

(A)

Str

ok

e (

%)

Time (s)


I 25°C I 3,5 A I 3,5% I

0,0

0,5

1,0

1,5

2,0

2,5

100 150 200 250 300 350 400

Tim

e (

s)

Stress (MPa)

cycle

cooling

actua on

* Getting quicker time response requires more current to heat the wire

D.SMA.156.2.18







oupgr


12

12

6 -

Back -


SmartFlex®

400 µm

Stroke vs Time


Str

oke (

%)

Time (s)

Cu

rren

t (A

)

Str

oke (

%)

Time (s)

Cu

rren

t (A

)

0

0.5

1

2

3

4

1.5

2.5

3.5

1 2 3 5

2

4

5

4

3

1

0

0

0

0.5

1

2

3

4

1.5

2.5

3.5

1 2 3 5

2

4

5

4

3

1

0

0 6 7 98


I 25°C I 3 A I 3,5% I

Stress (MPa)

Tim

e (

s)

2

10

4

6

50 100 150 200 250 350

0

300

8

12

400

14

16

2

10

4

6

50 100 150 200 250 350

0

300

8

12

400

14

16

actuation

cooling

actuation cycle

heatingcooling


I 25°C I 170 MPa I 3,5% I

Tim

e (

s)

Current (A)

12

14

2

16

10

8

6

4

2

0

2.4 2.8 3.2 3.6 4

12

14

2

16

10

8

6

4

2

0

2.4 2.8 3.2 3.6 4

actuation

cooling

actuation cycle

heatingcooling


I 3,8 A I 200 MPa I 3,5% I

Temperature (°C)

Tim

e (

s)

0-10

10

15

-40

20

-30 -20 10 20 30 40 50 60

25

5

30

35

40

-10

10

15

-40

20

-30 -20 10 20 30 40 50 60

25

5

30

35

40

0

actuation

cooling

actuation cycle

heatingcooling

SAES Group

www.saesgroup.com


oupgr


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SmartFlex®

400 µm with

silicon sleeve


I 25°C I 170 MPa I 3,5% I

0,0

0,5

1,0

1,5

2,0

2,5

3,0

4,5 5 5,5 6 6,5 7

Tim

e (

s)

Current (A)

cycle

cooling

actua on

Different cooling methods improving response time after actuation




Forced Air 4:1


Silicon 10:1

Oil Immersion 25:1



I 6,0 A I 170 MPa I 3,5% I

0,0

1,0

2,0

3,0

4,0

5,0

6,0

-20 -10 0 10 20 30 40 50 60

Tim

e (

s)

Temperature (°C)

cycle

cooling

actua on


I L 100 mm I 25°C I 6,5 A I 170 MPa I

0

1

2

3

4

5

6

7

8

9

10

0,0

0,5

1,0

1,5

2,0

2,5

3,0

3,5

4,0

0 1 2 3 4

Cu

rre

nt

(A)

Str

ok

e (

%)

Time (s)


I 25°C I 6,0 A I 3,5% I

0,0

0,5

1,0

1,5

2,0

2,5

100 150 200 250 300 350 400

Tim

e (

s)

Stress (MPa)

cycle

cooling

actua on








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D.SMA.97.2.18


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SmartFlex®

500 µm

Stroke vs Time


Str

oke (

%)

Time (s)

Cu

rren

t (A

)

Str

oke (

%)

Time (s)

Cu

rren

t (A

)

110

0.5

0

1

2

3

4

1.5

2.5

3.5

0 1 3 5 7 9

1

2

4

6

3

5

7

13110

0.5

0

1

2

3

4

1.5

2.5

3.5

0 1 3 5 7 9

1

2

4

6

3

5

7

13


I 25°C I 4 A I 3,5% I

Stress (MPa)

Tim

e (

s)

23

100 150 200 250 350

15

300 400

17

21

19

25

50

23

100 150 200 250 350

15

300 400

17

21

19

25

50

Stress (MPa)

Tim

e (

s)

2

100 150 200 250 350

0

300 400

0,5

1,5

1

2,5

50

2

100 150 200 250 350

0

300 400

0,5

1,5

1

2,5

50

actuationheating

actuation

actuation cycle

cooling


I 25°C I 170 MPa I 3,5% I

Current (A)

Tim

e (

s)

23

3,4 3,8 4,2 4,6 5,4

15

5 5,8

17

21

19

25

3

23

3,4 3,8 4,2 4,6 5,4

15

5 5,8

17

21

19

25

3

Current (A)

Tim

e (

s)

4

3,4 3,8 4,2 4,6 5,4

0

5 5,8

1

3

2

5

3

4

3,4 3,8 4,2 4,6 5,4

0

5 5,8

1

3

2

5

3

actuation

actuation cycle

cooling

actuationheating


I 5,7 A I 200 MPa I 3,5% I

Temperature (°C)

Tim

e (

s)

0

20

-40

30

-30 -20 10 20 30 40 50 60

40

50

60

-10

0

10

actuation

cooling

actuation cycle

heatingcooling

SAES Group

www.saesgroup.com


oupgr


15

15

8 -

Front -



SmartFlex®

500 µm with

silicon sleeve


I 25°C I 170 MPa I 3,5% I

Tim

e (

s)

Current (A)

6

7

6

8

5

4

3

2

1

0

6.5 7 8 8.5 9.57.5 9

6

7

6

8

5

4

3

2

1

0

6.5 7 8 8.5 9.57.5 9

actuation

cooling

actuation cycle

heatingcooling

Different cooling methods improving response time after actuation.




Forced Air 4:1


Silicon 10:1

Oil Immersion 25:1



I 8,5 A I 200 MPa I 3,5% I

Temperature (°C)

Tim

e (

s)

0

0-10

1

-40

3

-30 -20 10 20 30 40 50 60

4

5

6

2

actuation

cooling

actuation cycle

heatingcooling


I L 100 mm I 25°C I 8,5 A I 170 MPa I

Str

oke (

%)

Time (s)

Cu

rren

t (A

)

Str

oke (

%)

Time (s)

Cu

rren

t (A

)

6

0

0.5

0

1

2

3

4

1.5

2.5

3.5

0 2 4

2

6

10

8

8

4


I 25°C I 8,5 A I 3,5% I

Stress (MPa)

Tim

e (

s)

2

0,5

1

100 150 200 250 300 4000

350

1,5

2,5

3

3,5

actuation

cooling

actuation cycle

heatingcooling


D.SMA.98.2.18







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CRIMPS

for SmartFlex®

Wires

CRIMP Barrel 4 mm CRIMP Barrel 2 mm

Typical delivery packaging Design parameters to order crimped Smartflex wire

LaLb LaLb

Typical Pull-Out Max Force [N]

Wire Diameter [µm] 50 76 100 150 200

Barrell 4 mm 1,6 3,6 6,3 14 25

Barrell 2 mm 1,2 2,7 4,7 10 -

SAES Group

www.saesgroup.com

[email protected]

If your application requires an electro-mechanical termination we can support you with different crimp solutions according to your

requirements. Our standard solutions are specified below. For new design we are available to study and develop customized part

for you. Crimped Smartflex wires can be ordered both for prototypes and large volume production.

Barrel Crimp


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CRIMPS

for SmartFlex®

Wires

D.SMA.99.2.18

Design parameters to order crimped Smartflex wire Ring Type CrimpTypical Pull-Out Max Force [N]

Wire Diameter [µm] 150 200 300

Ring Type 10 19 35

Design parameters to order crimped Smartflex wire T Type Crimp


Wire Diameter [µm] 100 180

T type 4,7 15






Book Crimp


Wire Diameter [µm] 400 500

T type 50 80

NOTE: SAES can support you to study

and develop different book crimp to

weld on PCB

Design parameters to order crimped Smartflex wire


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Documents

· 2018-04-11 · L S L 0 High Force L ow Force Spring force Increase-40 -20 0 20 40 60 0 50 Temperature [°C] Austenite Martensite % " ! 310/ 320/-20 0 20 40 60 80 120 0 5 10 20