Converting yield stresses in U.S. Customary System (Psi)

Hi everyone,

I am creating a few new materials. I have my yield stresses in U.S. Customary System (Psi). Is there a way to avoid converting them to N_m2? I also noticed the "Plastic Strain" takes only 3 decimal digits afterwards. Is there a way I increase the significant digits?

Thank you in advance for your time.