FLEXINOL DDYYNNAALLOLLOYY, I, Inncc.. MaMakkeerrss ooff DDyynnaammiicc AlAlllooyyss Technical Characteristics of Actuator Wires Flexinol Actuator Wires are small diameter wires which contract like muscles when electrically driven. Smaller than motors or solenoids, cheaper and generally easier to use, these wires perform physical movement across an extremely wide variety of applications. Table of Contents Physical Properties Summary 2 Introduction 3 Section 1. Movement 4 Section 2. Electrical Guidelines 6 Section 3. Cycle Time 7 Section 4. Miscellaneous 9 Section 5. Underlying Technology 11 F1140Rev H 1 14762 Bentley Circle, Tustin, California 92780 USA 714-436-1206 714-436-0511 fax FLEXINOL DYNALLOY, Inc. Makers of Dynamic Alloys NICKEL - TITANIUM ALLOY PHYSICAL PROPERTIES 3 3 1. Density 0.235 lb/in (6.45 g/cm ) 2. Specific Heat 0.20 BTU/lb * F (0.2 cal/g * C)) 3. Melting Point 2370 F (1300 C) 4. Latent Heat of Transformation 10.4 BTU/lb (5.78 cal/g) 5. Thermal Conductivity 10.4 BTU/hr * ft * F (0.18 W/cm * C) 6. Thermal Expansion Coefficient -6 -6 Martensite 3.67x10 /F (6.6x10 /C) -6 -6 Austenite 6.11x10 /F (11.0x 10 /C) 7. Electrical Resistivity (approx.) Martensite: 32 micro-ohms * in (80 micro-ohms * cm) Austenite: 39 micro-ohms * in (100 micro-ohms * cm) Typical Temperature vs. Strain Characteristics for Dynalloys standard 158F (70C) LT and 194F (90C) HT Austenite start temperature alloys, at 172 MPa F1140Rev H 2 14762 Bentley Circle, Tustin, California 92780 USA 714-436-1206 714-436-0511 fax