AEROSPACE MATERIALS TEST PAPER 2026.pdf

AEROSPACE MATERIALS TEST PAPER 2026/2027
QUESTIONS AND SOLUTIONS RATED A+
✔✔ Slag - ✔✔A by- product of metal refinement that contains the fluxing agent and
other impurities

✔✔Carbon - ✔✔Most important alloying element found in ferrous matierals

✔✔Ferrite - ✔✔A solid solution of iron with a small amount of carbon that has a body
centered cubic structure

✔✔Carburizing - ✔✔A method of casehardening steel in which carbon is added to the
surface of low carbon steel

✔✔Tempering - ✔✔A heat treatment process used to reduce the brittleness after
hardening

✔✔Normalizing - ✔✔A heat treatment process used to relieve stresses caused by
irregular gain structure resulting form forging, welding, or casting

✔✔Coke - ✔✔A material that is almost pure carbon derived from coal

✔✔Criticial Temperature - ✔✔Transformation Temperature

✔✔Annealing - ✔✔A heat treatment process for steel resulting in soft, ductile metal with
pw tensile stength

✔✔Austenite - ✔✔A solid solution of carbon and iron that has a face centered cubic
structure

✔✔Quenching - ✔✔Process of cooling a metal after heat treatment in order to obtain
specific properties

✔✔Nitriding - ✔✔A non selective case hardening method using ammonia gas

✔✔Steel - ✔✔A ferrous metal with a carbon content below 2%

✔✔Primary alloying element - ✔✔In the SAE identification method, what are the first
two numbers

✔✔Percentage of Carbon - ✔✔In the SAE identification method, what are the last two
numbers

✔✔Softwood - ✔✔Type of wood primarily used for aircraft structure.