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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 Groupwww.saesgroup.comsma@saes‐group.com
Stroke vs TimeI 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 StressI 25°C I 50 mA I 3,5% I
Stress (MPa)
Tim
e (m
s)
50
100
150 200 250 300 3500
200
cycleactuation
cooling
actuation cycleheatingcooling
400
150
250
300
Cycle time vs CurrentI 25°C I 170 MPa I 3,5% I
Tim
e (m
s)
Current (mA)
150
200
50
100
450
50 60 6555
250
7040
actuation
cooling
actuation cycleheatingcooling
Cycle time vs TemperatureI 70 mA I 200 MPa I 3,5% I
Temperature (°C)
Tim
e (m
s)
-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 cycleheatingcooling
SmartFlex®50 μm
Stroke vs TimeI 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
10
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 10
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
Cycle time vs StressI 25°C I 130 mA I 3,5% I
Stress (MPa)
Tim
e (m
s)
200
400
150 200 250 3500
300
600
800
400
200
400
150 200 250 3500
300
600
800
400
actuation
cooling
actuation cycleheatingcooling
Cycle time vs CurrentI 25°C I 170 MPa I 3,5% I
Tim
e (s
)
Current (mA)
1,2
1,6
0,4
0,8
80 1000
120 140 160
1,2
1,6
0,4
0,8
80 1000
120 140 160
actuation
cooling
actuation cycleheatingcooling
Cycle time vs TemperatureI 160 mA I 200 MPa I 3,5% I
Temperature (°C)
Tim
e (m
s)
-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 cycleheatingcooling
D.SMA.94.1.14
The SAES Group manufacturing companies are ISO9001 certified, the Asian and Italian companiesare also ISO14001 certified. Full information about our certifications for each company of theGroup are available on our website at: www.saesgroup.com
© SAES Group. Printed in Italy. All rights reserved. SAES® and SmarFlex® are registered trademarks of SAES Group. SAES Group
reserves the right to change or modify product specifications at any time without notice.
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
oupgr
SmartFlex®76 μm
Stroke vs TimeI 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
0.50
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
0.50
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
Cycle time vs StressI 25°C I 200 mA I 3,5% I
Stress (MPa)
Tim
e (m
s)
100 150 200 250 3500
300
400
800
1200
1600
50 400100 150 200 250 3500
300
400
800
1200
1600
50 400
actuation
cooling
actuation cycleheatingcooling
Cycle time vs CurrentI 25°C I 170 MPa I 3,5% I
Tim
e (m
s)
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 cycleheatingcooling
Cycle time vs TemperatureI 240 mA I 240 MPa I 3,5% I
Temperature (°C)
Tim
e (m
s)
-10
1000
1500
-400
2000
-30 -20 0 10 20 30 40 50 60
2500
500
actuation
cooling
actuation cycleheatingcooling
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 Groupwww.saesgroup.comsma@saes‐group.com
SmartFlex®100 μm
Stroke vs TimeI 1st cycle I L 100 mm I 25°C I 380mA I 170 MPa I
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
Cycle time vs StressI 25°C I 300 mA I 3,5% I
Stress (MPa)
Tim
e (m
s)
500
2500
1000
1500
50 100 150 200 250 3500
300
2000
3000
400
500
2500
1000
1500
50 100 150 200 250 3500
300
2000
3000
400
actuation
cooling
actuation cycleheatingcooling
Cycle time vs CurrentI 25°C I 170 MPa I 3,5% I
Tim
e (m
s)
Current (mA)
500
2000
2500
1000
1500
210 260 310 3600
3000
500
2000
2500
1000
1500
210 260 310 3600
3000actuation
cooling
actuation cycleheatingcooling
Cycle time vs TemperatureI 380 mA I 200 MPa I 3,5% I
Temperature (°C)
Tim
e (m
s)
-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 cycleheatingcooling
D.SMA.95.1.14
The SAES Group manufacturing companies are ISO9001 certified, the Asian and Italian companiesare also ISO14001 certified. Full information about our certifications for each company of theGroup are available on our website at: www.saesgroup.com
© SAES Group. Printed in Italy. All rights reserved. SAES® and SmarFlex® are registered trademarks of SAES Group. SAES Group
reserves the right to change or modify product specifications at any time without notice.
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
oupgr
SmartFlex®150 μm
Stroke vs TimeI 1st cycle I L 100 mm I 25°C I 750mA I 170 MPa I
Str
oke
(%)
Time (s)
Cu
rren
t (A
)
Str
oke
(%)
Time (s)
Cu
rren
t (A
)
60
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
60
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
Cycle time vs StressI 25°C I 600 mA I 3,5% I
Stress (MPa)
Tim
e (m
s)
1000
4000
2000
3000
50 100 150 200 250 3500
300
5000
400
actuation
cooling
actuation cycleheatingcooling
Cycle time vs CurrentI 25°C I 170 MPa I 3,5% I
Tim
e (m
s)
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 cycleheatingcooling
Cycle time vs TemperatureI 750 mA I 200 MPa I 3,5% I
Temperature (°C)
Tim
e (m
s)
-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 cycleheatingcooling
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 Groupwww.saesgroup.comsma@saes‐group.com
SmartFlex®200 μm
Stroke vs TimeI 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
Cycle time vs StressI 25°C I 0.9 A I 3,5% I
Stress (MPa)
Tim
e (s
)
1
5
2
3
50 100 150 200 250 3500
300
4
6
400
1
5
2
3
50 100 150 200 250 3500
300
4
6
400
actuation
cooling
actuation cycleheatingcooling
Cycle time vs CurrentI 25°C I 170 MPa I 3,5% I
Tim
e (s
)
Current (A)
1
4
5
2
3
0,75 0.8 10
6
0.9 1.1
1
4
5
2
3
0,75 0.8 10
6
0.9 1.1
actuation
cooling
actuation cycleheatingcooling
Cycle time vs TemperatureI 1,1 A I 200 MPa I 3,5% I
Temperature (°C)
Tim
e (s
)
-10
4
6
2
-400
8
-30 -20 0 10 20 30 40 50 60
10
12
-10
4
6
-400
8
-30 -20 0 10 20 30 40 50 60
10
12
2
actuation
cooling
actuation cycleheatingcooling
D.SMA.96.1.14
The SAES Group manufacturing companies are ISO9001 certified, the Asian and Italian companiesare also ISO14001 certified. Full information about our certifications for each company of theGroup are available on our website at: www.saesgroup.com
© SAES Group. Printed in Italy. All rights reserved. SAES® and SmarFlex® are registered trademarks of SAES Group. SAES Group
reserves the right to change or modify product specifications at any time without notice.
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
oupgr
SmartFlex®300 μm
Stroke vs TimeI 1st cycle I L 100 mm I 25°C I 2.1 A I 170 MPa I
Str
oke
(%)
Time (s)
Cu
rren
t (A
)
Str
oke
(%)
Time (s)
Cu
rren
t (A
)
60
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
7 860
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
Cycle time vs StressI 25°C I 1,8 A I 3,5% I
Stress (MPa)
Tim
e (s
)
8
50 100 150 200 250 3500
300 400
2
6
4
10
8
50 100 150 200 250 3500
300 400
2
6
4
10actuation
cooling
actuation cycleheatingcooling
Cycle time vs CurrentI 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 cycleheatingcooling
Cycle time vs TemperatureI 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 cycleheatingcooling
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 Groupwww.saesgroup.comsma@saes‐group.com
SmartFlex®400 μm
Stroke vs TimeI 1st cycle I L 100 mm I 25°C I 3.8 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
1 2 3 5
2
4
5
4
3
1
0
00
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
Cycle time vs StressI 25°C I 3 A I 3,5% I
Stress (MPa)
Tim
e (s
)
2
10
4
6
50 100 150 200 250 3500
300
8
12
400
14
16
2
10
4
6
50 100 150 200 250 3500
300
8
12
400
14
16
actuation
cooling
actuation cycleheatingcooling
Cycle time vs CurrentI 25°C I 170 MPa I 3,5% I
Tim
e (s
)
Current (A)
12
14
2
16
10
8
6
4
2
02.4 2.8 3.2 3.6 4
12
14
2
16
10
8
6
4
2
02.4 2.8 3.2 3.6 4
actuation
cooling
actuation cycleheatingcooling
Cycle time vs TemperatureI 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 cycleheatingcooling
D.SMA.97.1.14
The SAES Group manufacturing companies are ISO9001 certified, the Asian and Italian companiesare also ISO14001 certified. Full information about our certifications for each company of theGroup are available on our website at: www.saesgroup.com
© SAES Group. Printed in Italy. All rights reserved. SAES® and SmarFlex® are registered trademarks of SAES Group. SAES Group
reserves the right to change or modify product specifications at any time without notice.
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
oupgr
SmartFlex®500 μm
Stroke vs TimeI 1st cycle I L 100 mm I 25°C I 5.7 A I 170 MPa I
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
Cycle time vs StressI 25°C I 4 A I 3,5% I
Stress (MPa)
Tim
e (s
)
23
100 150 200 250 35015
300 400
17
21
19
25
50
23
100 150 200 250 35015
300 400
17
21
19
25
50
Stress (MPa)
Tim
e (s
)
2
100 150 200 250 3500
300 400
0,5
1,5
1
2,5
50
2
100 150 200 250 3500
300 400
0,5
1,5
1
2,5
50
actuationheating
actuationactuation cyclecooling
Cycle time vs CurrentI 25°C I 170 MPa I 3,5% I
Current (A)
Tim
e (s
)
23
3,4 3,8 4,2 4,6 5,415
5 5,8
17
21
19
25
3
23
3,4 3,8 4,2 4,6 5,415
5 5,8
17
21
19
25
3
Current (A)
Tim
e (s
)
4
3,4 3,8 4,2 4,6 5,40
5 5,8
1
3
2
5
3
4
3,4 3,8 4,2 4,6 5,40
5 5,8
1
3
2
5
3
actuationactuation cyclecooling
actuationheating
Cycle time vs TemperatureI 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
-100
10
actuation
cooling
actuation cycleheatingcooling
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 Groupwww.saesgroup.comsma@saes‐group.com
Increased cooling time performances
SmartFlex®500 μm withsilicon sleeve
Cycle time vs CurrentI 25°C I 170 MPa I 3,5% I
Tim
e (s
)
Current (A)
6
7
6
8
5
4
3
2
1
06.5 7 8 8.5 9.57.5 9
6
7
6
8
5
4
3
2
1
06.5 7 8 8.5 9.57.5 9
actuation
cooling
actuation cycleheatingcooling
Different cooling methods improving response time after actuation.Speed performance's increasing
Standard air convection 1:1Solid Heat Sink Materials 2:1Forced Air 4:1Heat Conductive Grease 8:1Silicon 10:1Oil Immersion 25:1Water with Glycol 100:1
Cycle time vs TemperatureI 8,5 A I 200 MPa I 3,5% I
Temperature (°C)
Tim
e (s
)
00-10
1
-40
3
-30 -20 10 20 30 40 50 60
4
5
6
2
actuation
cooling
actuation cycleheatingcooling
Stroke vs Time First cycle 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
)
60
0.5
0
1
2
3
4
1.5
2.5
3.5
0 2 4
2
6
10
8
8
4
Cycle time vs StressI 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 cycleheatingcooling
* Getting quicker time response requires more current to heat the wire
D.SMA.98.1.14
The SAES Group manufacturing companies are ISO9001 certified, the Asian and Italian companiesare also ISO14001 certified. Full information about our certifications for each company of theGroup are available on our website at: www.saesgroup.com
© SAES Group. Printed in Italy. All rights reserved. SAES® and SmarFlex® are registered trademarks of SAES Group. SAES Group
reserves the right to change or modify product specifications at any time without notice.
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
oupgr
SmartFlex®300 μm with
silicon sleeve
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 Groupwww.saesgroup.comsma@saes‐group.com
Increased cooling time performances
Cycle time vs CurrentI 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 1:1Solid Heat Sink Materials 2:1Forced Air 4:1Heat Conductive Grease 8:1Silicon 10:1Oil Immersion 25:1Water with Glycol 100:1
Cycle time vs TemperatureI 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
Curr
ent (
A)
Stro
ke (%
)
Time (s)
Cycle time vs StressI 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
Increased cooling time performances
SmartFlex®400 μm withsilicon sleeve
Cycle time vs CurrentI 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 Speed performance's increasing
Standard air convection 1:1Solid Heat Sink Materials 2:1Forced Air 4:1Heat Conductive Grease 8:1Silicon 10:1Oil Immersion 25:1Water with Glycol 100:1
Cycle time vs TemperatureI 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
Stroke vs Time First cycle 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
Curr
ent (
A)
Stro
ke (%
)
Time (s)
Cycle time vs StressI 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
* Getting quicker time response requires more current to heat the wire
D.SMA.156.0.17
The SAES Group manufacturing companies are ISO9001 certified, the Asian and Italian companiesare also ISO14001 certified. Full information about our certifications for each company of theGroup are available on our website at: www.saesgroup.com
© SAES Group. Printed in Italy. All rights reserved. SAES® and SmarFlex® are registered trademarks of SAES Group. SAES Group
reserves the right to change or modify product specifications at any time without notice.
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CRIMPSfor 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 ‐
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If your application requires an electro‐mechanical termination we can support you with different crimp solutions according to yourrequirements. Our standard solutions are specified below. For new design we are available to study and develop customized partfor you. Crimped Smartflex wires can be ordered both for prototypes and large volume production.
Barrel Crimp
CRIMPSfor SmartFlex®Wires
D.SMA.99.15.16
Design parameters to order crimped Smartflex wire Ring Type CrimpTypical Pull‐Out Max Force [N]
Wire Diameter [μm] 150 200 300Ring Type 10 19 35
Design parameters to order crimped Smartflex wire T Type Crimp
Typical Pull‐Out Max Force [N]Wire Diameter [μm] 100 180T type 4,7 15
The SAES Group manufacturing companies are ISO9001 certified, the Asian and Italian companiesare also ISO14001 certified. Full information about our certifications for each company of theGroup are available on our website at: www.saesgroup.com
© SAES Group. Printed in Italy. All rights reserved. SAES® and SmarFlex® are registered trademarks of SAES Group. SAES Group
reserves the right to change or modify product specifications at any time without notice.
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Book Crimp
Typical Pull‐Out Max Force [N]Wire Diameter [μm] 400 500T type 50 80
NOTE: SAES can support you to studyand develop different book crimp toweld on PCB
Design parameters to order crimped Smartflex wire
SmartFlex®Springs“Shape MemorySprings for Actuators”
COMPRESSIONSPRINGS
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 3010 25 1,5 14 89 16 2,2 50 26 18 1,5 30 33 8 0,6 2 2
Available Ends under request
Typical behaviour of a SMA compression spring
Forc
e
Stroke
Bias
Spr
ing
Austenite
Martensite
B
A
s
heat
ingco
oling
SMA SpringBias Spring
Stroke
BAs
SMA SpringBias Spring
Stroke
BAs
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 andapplication 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
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SmartFlex®Springs“Shape MemorySprings for Actuators”
TENSILE SPRINGS
D.SMA.101.1.14
Typical behaviour of a SMA tensile spring
Forc
e
Stroke
Bias SpringAustenite
Martensite
A
B
s
heatingcooling
Forc
e
Stroke
Bias SpringAustenite
Martensite
A
B
s
heatingcooling
SMA Spring Bias Spring
Stroke
BAs
Force
SMA tensile springs can be used as very fast and miniaturized thermal‐actuators. When heated above As (austenite starttemperature) they contracts developing an high force.
SMA tensile springs can be customized according to your designand 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
Α
Α
Sez. Α−Α
1 mm
Α
Α
Sez. Α−Α
1 mm
Full twisted loop Open loop with
special hook
Mechanical and functional characteristics of some exemplifying tensile spring
D [mm]Mean Diameter
L0 [mm]Free Length
d [mm]Wire Diameter
F [N]Typical Force
s [mm]Typical Stroke
12 60 1,5 10 1608 12 1,5 20 65 30 0,8 3 100
The SAES Group manufacturing companies are ISO9001 certified, the Asian and Italian companiesare also ISO14001 certified. Full information about our certifications for each company of theGroup are available on our website at: www.saesgroup.com
© SAES Group. Printed in Italy. All rights reserved. SAES® and SmarFlex® are registered trademarks of SAES Group. SAES Group
reserves the right to change or modify product specifications at any time without notice.
Available Ends under request
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