How many degrees of superheat are there in steam at 4000 kPa and 900°C? Power Engineering How many degrees of superheat are there in steam at 4000 kPa and 900°C? A. 649.6°C B. 250.4°C C. 900°C D. 263.99°C E. 445.8°C Answer: A Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+