How to draw all the key properties of Excel use the results of tensile tests of steel?

I'm working on how draw strength, yield strength, and all the key properties of tensile test data, but can not, I understand that for Stress Testing, calculate the length of the sample x 0.1%. But as the voltage values are x10-6, how I can then plot where the first point? Another thing is, how I can know the proportional limit on the graph?

Just because the values are expressed in small units does not mean you can not cards. If, for example, the value is 3 x 10 ^ -6, Just enter 3 in the appropriate cell, and add "x 10 ^ 6" on the label at the final table.