| 
       Description  | 
    
       025  | 
    
       037  | 
    
       050  | 
    
       100  | 
    
       150  | 
    
       250  | 
| 
       Wire diameter (micro m)  | 
    
       25  | 
    
       37  | 
    
       50  | 
    
       100  | 
    
       150  | 
    
       250  | 
| 
       Min bend radius (mm)  | 
    
       1.3  | 
    
       1.8  | 
    
       2.5  | 
    
       5  | 
    
       7.5  | 
    
       12.5  | 
| 
       Linear resistance (ohm/m)  | 
    
       1770  | 
    
       860  | 
    
       510  | 
    
       150  | 
    
       50  | 
    
       20  | 
| 
       Recommended current (mA) [1]  | 
    
       20  | 
    
       30  | 
    
       50  | 
    
       180  | 
    
       400  | 
    
       1000  | 
| 
       Recommended power (W/m) [1]  | 
    
       0.71  | 
    
       0.77  | 
    
       1.28  | 
    
       4.86  | 
    
       8  | 
    
       20  | 
| 
       Max. recovery force (N) [2]  | 
    
       0.284  | 
    
       0.645  | 
    
       1.147  | 
    
       4.599  | 
    
       10.356  | 
    
       28.763  | 
| 
       Rec. recovery force (N) [3]  | 
    
       0.069  | 
    
       0.204  | 
    
       0.343  | 
    
       1.471  | 
    
       3.236  | 
    
       9.12  | 
| 
       Rec. deformation force (N) [4]  | 
    
       0.02  | 
    
       0.039  | 
    
       0.078  | 
    
       0.275  | 
    
       0.608  | 
    
       1.687  | 
| 
       Min. contraction time (sec)  | 
    
       0.1  | 
    
       0.1  | 
    
       0.1  | 
    
       0.1  | 
    
       0.1  | 
    
       0.1  | 
| 
       Relaxation time (sec)  | 
    
       0.1  | 
    
       -  | 
    
       0.3  | 
    
       0.8  | 
    
       2  | 
    
       5.5  | 
| 
       Typical cycle rate (cycles/min)  | 
    
       55  | 
    
       52  | 
    
       46  | 
    
       33  | 
    
       20  | 
    
       9  | 
| 
       General Properties  | 
    ||
| 
       Activation start temperature  | 
    
       68°C  | 
    |
| 
       Activation finish temperature  | 
    
       78°C  | 
    |
| 
       Effective transition temperature  | 
    
       70°C  | 
    |
| 
       Relaxation start temperature  | 
    
       52°C  | 
    |
| 
       Relaxation finish temperature  | 
    
       42°C  | 
    |
| 
       Annealing temperature  | 
    
       540°C  | 
    |
| 
       Melting temperature  | 
    
       1300°C  | 
    |
| 
       Heat capacity  | 
    
       0.322J/g°C  | 
    |
| 
       Latent heat  | 
    
       242J/g  | 
    |
| 
       Density  | 
    
       645g/cc  | 
    |
| 
       Energy conversion efficiency  | 
    
       5%  | 
    |
| 
       Max. deformation ratio  | 
    
       8%  | 
    |
| 
       Recommended deformation ratio  | 
    
       3 - 5%  | 
    |
| 
       Youngs Modulus  | 
    
       28GPa  |