Aerm 1203 Shop Practices (Materials And Process Test Review) Qs&as

AERM 1203 Shop Practices (Materials and process Test Review) Qs&As Why are aircraft metals malleable? - ANSWER-Because it can be hammered, rolled, or pressed into various shapes without cracking, breaking or leaving some other detrimental effect. What does the first digit of 4130 indicate? - ANSWER-The basic alloying element. What are firewalls made from? - ANSWER-Stainless steel and or titanium. What two characteristics make aluminum skin easy to work with? - ANSWER-malleable and ductile What type of aluminum is 1100? - ANSWER-99 % pure aluminum with one control over individual impurities. What does the first digit of 2024 aluminum indicate? - ANSWER-The major alloy type or element. What do designations F and O mean? - ANSWER-F = as fabricated O= annealed, recrystallized(wrought products only) What are two test to identify titanium? - ANSWER-The spark test, and the moistened metal dragged across glass making pencil like markings. How do iron constantan thermocouples function? - ANSWER-Electrical conductivity of a metal as it changes temperature. What quenching treatment has the slowest cooling potential? - ANSWER-OilWhy are parts treated in sodium and potassium nitrate baths rinsed in hot water? - ANSWER-Sodium and potassium nitrate are corrosive salts and need to be rinsed in water.