Request of Torque data to design and characterize 3D printed shafts

I would appreciate if someone could post torque information
I want to make sure after I characterize 3D printed shafts that they will work as an alternative. If I have the peak torque and torque data I can guarantee a FDM printed shaft as alternative to machining.

We measured a torque constant of 0.02Nm/A.
We drive the motors up to 20A for short duration of time.