Stress and Strain curve generation of thermoplastics.

[MajerIV]

I found a stress/strain curve generator that utilizes excel, however I've encountered issues while attempting to use it. It seems as though the visible range on the excel document doesn't allow for materials with a lower Young's modulus.
Here's my material specifications:
Acrylonitrile Styrene Acrylate
Tensile Ultimate Strength
6526.7

Tensile Yield Strength
5728.991

Elongation
10

Young's Modulus
291525.9

Poisson's Ratio
.332

Coefficient of Thermal Expansion
1.77e-10

Density
0.0386562


It doesn't show up on the graph until I add an extra zero to the end of the current young's modulus.
Here's the tool I've been attempting to use:

https://sourceforge.net/projects/s-s-curve/

I'm also open to recommendations on other programs that I can utilize to achieve the level of success that I'm looking for.

 

[3DDave]

The software says: "for creating a Stress-Strain curve using the Ramberg-Osgood formula"

The Wikipedia article on Ramsberg-Osgood says:
"It is especially applicable to metals that harden with plastic deformation"

ABA is not metal and it doesn't work harden.

"The spherical particles of slightly crosslinked acrylate rubber (instead of butadiene rubber), functioning as an impact modifier, are chemically grafted with styrene-acrylonitrile copolymer chains, and embedded in styrene-acrylonitrile matrix"

Your best bet is a strain testing machine and a number of samples.