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SmartFlex®
w e s u p p o r t y o u r i n n o v a t i o n
SmartFlex®
SAES® Getters Group and Shape Memory Alloys
The SAES® Getters Group, headquartered in Italy near Milan, is a leading suppli-er of advanced material solutions for scientificand industrial applications worldwide. SAES man-ufactures and sells metal alloy based active com-ponents for high tech industrial applications.
Continuous forefront research and innovation ac-tivities, joint developments with customers, highvolume manufacturing capabilities and a world-wide sales and service network have been driv-ing the Group’s success over the last sixty years.
By leveraging the core competence in special metallurgy and with the support ofits affiliated company Memory-Metalle GmbH, SAES Getters offers a highly diver-sified product portfolio of shape memory alloy (SMA) semi-finished shapes andcomponents, serving any need around industrial and biomedical applications.
HIGHLIGHTSIn-house vertically integrated process, from ingot toshape memory component manufacturing
100% on-line actuator wires quality control (patentpending)
Full flexibility in product mix
Know-how on shape memory component implemen-tation in final devices
Dedicated R&D SMA department
ISO 14001 certified company - for SMA compo-nents, quality management system conforming toISO TS 16949:2002 standard
Actuator wire mass production for high volume in-dustrial applications
Industrial ApplicationsThermal and electrical actuators
Sensors/actuators for air conditioners
Fire protection
Antiscald safety valves
Circuit brakers
Damping and vibration control devices
Eyewear
Biomedical ApplicationsOrthodontics
Surgical tools
Guidewires
Implantable devices
Orthopedics
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Shape Memory Alloy Actuators
SmartFlex® is SAES Getters’ product line of shape memory alloy semi-finishedshapes and components. Shape memory alloys unique property to recover shape upon heating can be ef-fectively packaged into compact, light, powerful and silent actuators to replacealternative technologies based on wax, DC motors and electrical motors. The unmatched energy density, degree of integration and simplicity in designmake shape memory alloys the new industry standard for linear and rotary ac-tuators.
SMA actuators offer a full range of advantages:
Reliability
Compactness and flexibility
Reduced cost
Direct linear or angular movement
Noiseless operation
Compatibility with harsh environments
No EMI
SmartFlex actuator wires deliver state-of-the-art performance for reliable actua-tors.
SmartFlex Actuatorwires can replacebulky competitive
products
Advanced shape memory
alloys
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SmartFlex Product Portfolio
Alloy compositions: shape memory andsuperelastic (standard As -25 °C <T<120 °C)
Thermomechanical conditions: cold-worked,straight annealed, shape annealed
Shapes:
Round wire (25 μm < <5 mm)
Ribbon and strip (50 x 25 μm2 < <10,1 x0,76 mm2)
Thin sheet (down to 20 μm thicknessand 100 mm width)
Springs
Surface finish: electropolished, shiny blackoxide, amber/brown oxide, ultra-fine polished
SAES’ proprietary production route, involving avertical integrated manufacturing process from Niand Ti materials to final components, enablescomplete process control and flexibility in productmix.
For shape memory component manufacturing,SAES Getters is committed to adopting the quali-ty management system conforming to ISO TS16949:2002 standard.
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A full range ofSMA
semifinishedshapes and
components
SmartFlex Actuator Wires
Wire thickness: 20 μm< d <500 μm
Maximum stroke: 5.5%
Force @ 150 MPa: from 5 to 3,000 g
Number of cycles: > 200,000 (at 150 MPa, 3.5% stroke)
Transition temperatures (at 200 MPa load):
AS > 90 °C
Mf > 65 °C
Availability of wires with electrical crimps
Availability of NiTi wire in silicon sleeve
For light,powerful,
reliableactuators
00,511,522,533,544,55
0 20 40 60 80 100 120 140 160
Wire heating
Wire cooling
AsAfMsMf
AsAfMsMf
100
AsAfMsMf
50 100 150 200 250 300
120
100
80
60
40
200
0
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Temperature (°C)
Sm
art
Fle
xw
ire
str
ain
(%)
Applied load (MPa)
Tem
pera
ture
(°C
)
Load effect on
hysteresis
SmartFlex wire
hysteresis
Advantages of SMA Actuators
SAES SmartFlex shape memory alloy wires have been specifically developed foractuators.For linear movements of a few millimeters or angular movements of just a fewdegrees, use of a motor rotating at thousands of rpm coupled with gears, clutch-es and reducers is certainly not the best solution.Replacement of small motors or solenoids can be effectively done withSmartFlex actuator wires. Since shape memory alloy wires are much smaller forthe work they do, a number of new products and improved designs on existingproducts can be developed.Use of “smart materials” for actuation represents a technological opportunity fordevelopment of electro-mechanical components: the typical characteristic ofshape memory alloy wires of obtaining mechanical actions if stimulated withelectrical current promotes development of simple, very compact, reliable actua-tors.Component makers can use SMA materials to simplify products, add new func-tions, upgrade performance, improve reliability and cut down component costs,while significantly reducing mechanical complexity and size.
0
0,5
1
1,5
2
2,5
3
3,5
4
0 1 2 3 4 5 6
180 mA 200 mA
220 mA 240 mA
260 mA 280 mA
300 mA 320 mA
340 mA 360 mA
SmartFlex 100 μm wire
0,5
1
1,5
2
2,5
3
3,5
4
0 50.000
100.000
150.000
200.000
250.000
300.000
0
Hot wire length
Cold wire length
Time
Sm
art
Fle
xw
ire
str
ain
(%)
Cycles
Wir
estr
ain
(%)
SmartFlex wire
lifetime
SmartFlex actuation:
effect of feed current
Lainate, Italy - Avezzano, Italy -Tortolì, Italy - Cologne, Germany - Weil am Rhein, Germany - Moscow, Russia - Daventry, UK -
Nanjing, P.R. of China - Shanghai, P.R. of China -Tokyo, Japan - Seoul, Korea - Jincheon-kun, Korea - Jhubei City, Taiwan -
Singapore - Independence Cleveland OH, USA - Colorado Springs CO, USA - San Luis Obispo CA, USA
The SAES Getters Group manufacturing companies are ISO9001 certified, the Asian and Italian companies are
ISO14001certified also. Full information about certifications for each company of the Group is available on the corporate
website at: www.saesgetters.com
© 2007 SAES Getters. Printed in Italy. All rights reserved. SAES® and SmartFlex® are registered trademarks of SAES Getters S.p.A., its subsidiaries and affiliates.SAES Getters reserves the right to change or modify product specifications at any time without notice.
SAES Getters Group
B.SMA.70.4