ENTC 207 Final Exam question with 100% correct answers 2023

ENTC 207 Final ExamHow abundant in nature is Iron? - correct answer It makes up 5% of the earth's crust how is Steel Made? From what by what? - correct answer By reducing oxide ores of iron by thermochemical reactions in a blast furnace OR in a direct reduction process What kind of industrial use does Pure Iron have? - correct answer None, it is too weak and soft Steel is an alloy of what two elements? what percentage? - correct answer Iron and carbon <2% Carbon what is the product of a blast furnace and what is it used for? - correct answer Pig Iron is used for making steels and is also the starting point for cast irons What are most steels made in? What is the majority of output of these furnaces? - correct answer Baic oxygen Furnace output continuously cast into semis for mill processing to steel products When should steel cleanliness be a concern? - correct answer When surface finish, high strength, weldability, and structure-related properties are selection considerations Can cleanliness be specified by steel melting practice? - correct answer Yes How do ingot cast steel properties vary? - correct answer they vary depending on the type of practice used in pouring the ingot