Entc 207 final exam - Study guides, Class notes & Summaries

ENTC 207 Final Exam Question and answers correctly solved 2023/2024Tensile Testing Steps - correct answer 1. Place specimen in tester 2. Apply tensile load until sample breaks 3. During loading measure tensile load and length at intervals 4. Measure length after sample breaks 5. Calculations Stress - correct answer force / cross section area Y-axis psi Strain - correct answer

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 pro...

stress - Answer force divided by area; calculate at each measurement interval strain - Answer (final length- original length)/original length Modulus of elasticity - Answer Stress/Strain in straight line portion of graph; can't calculate when graph is not straight (measure of stiffness) percent elongation - Answer final strain x 100% Proportional limit - Answer when the behavior is elastic but not proportional