no 



BELL SYSTEM TECHNICAL JOURNAL 



TABLE II 

 Results of Plasticity Tests 



* Equilibrium Diagrams used: 

 Solder No. 1 and 2 — Rosenhain & Tucker. 

 Solder No. 3— Stoffel. 

 Solder No. 4 — International Critical Tables, Vol. IV. 



t Sample heights taken were too low to render the data significant. 



corresponds to a decrease in the sample height at any specified time. 

 However, the curves for the different solders do not fall together. As 

 a matter of fact, no such agreement would be expected after studying 

 results such as those plotted in Fig. 3. The curves given in this 

 figure show that if a number of solders are tested at temperatures 

 corresponding to a given solid-liquid ratio, they may fall in quite 

 different orders with respect to each other in a comparison of sample 

 heights, according to the time chosen for the comparison. 



Still less agreement among the solders is shown when values of h 

 are compared with percentage of liquid phase. There seems to be no 

 relation here; in fact, for a given solder alteration of the temperature 

 and hence of the proportion of liquid phase, does not seem to have 

 much effect upon the value of h. 



A survey of the curves and data shows that the possibility of drawing 



