Properties of superheated vapor R134a?

for English units, see this table

http://energy.sdsu.edu/testcenter/testhome/Test/solve/basics/tables/tablesPC/superR134a-Eng.html

(click on SI once there for SI units if needed). If you need higher pressure than 400psia or 16MPa, you will need the R143a superheated vapor chart, which I can't find online. You can find tables and charts in various thermodynamics textbooks. For example, Tables in "fundamentals of engineering thermodynamics" by Moran and Shapiro; or the chart by "SUVA/DuPont" is in the appendix of the "mechanical engineering reference manual" by Lindeburg.