CWB Level 2 Module 22 Questions and Answers

Complete the following: A) Chromium stabilizes the _______ form of iron. B) Nickel stabilizes the _______ form of iron A) BCC B) FCC If a straight chromium steel of 18% Cr and 0.1% C is heated to 1,000°C will it transform to austenite or remain as ferrite? Remain as ferrite What is the predominant structure of an 18% CR, 8% Ni steel at room temperature? Austenite The chromium content of a stainless steel is 20%. Is it likely this is a martensite grade? No What does the letter L signify in the designation 316L? A) Low chromium B) Longitudinal specimen C) Low carbon (maximum 0.03%) C) Low carbon (maximum 0.03%) A 14% Cr martensitic steel hardened to 1000°C and air cooled produces: A) Ferrite B) Austenite C) Martensite C) Martensite Determine the minimum specified titanium content of a type 409 ferritic stainless steel with 0.05% carbon. 0.3% Ti Does austenitic stainless steel have a greater or lesser work hardening rate then carbon steel? Greater True or False? "100% CO2 is not generally used for GMAW of stainless steels." True