Types of Metal(SB-1) Flashcards
What term is used to describe the equivalent of the Steelworker rating in civilian
construction?
ironworker
A material must be primarily composed of _____ to be considered a ferrous metal.
iron
Ferrous metals are typically
magnetic
Which type of iron is one of the main raw materials used to make steel?
pig
What characteristic of pig iron limits its use?
It is comparatively weak and brittle.
What material do Steelworkers use the most?
steel
Cast iron is any iron containing greater than _____ alloy.
2%
What process is used to produce malleability in cast iron?
annealing
What group of steel is best suited for the manufacture of crane hooks and axles?
medium carbon
What group’s specifications cover high-strength steels?
astm
What group’s specifications cover stainless steels
aisi
What stainless steel is normally nonmagnetic?
Austenitic chromium-nickel of the 300 series
What common alloy steel is used to make high-quality hand tools?
chrome vandium steel
Which of the following metals is nonferrous?
aluminum
What combination of elements in proper proportion make bronze?
copper tin
What action does the letter “T” signify when used in conjunction with a numbering system
that classifies different aluminum alloys?
heat treated
What manufacturing marks can you look for when a metal’s color does not provide positive
identification?
all of the above
When applying the spark test to a metal, you notice the spark stream has white shafts and
forks only. What does this condition indicate about the metal under test?
low carbon steel
What metal produces a spark stream about 25 inches long with small and repeating
sparklers of small volume that are initially red in color?
grey cast iron
Which of the following metals produces the shortest length spark stream?
nickel
You perform the chip test by removing a small amount of material from the test piece with a
sharp cold chisel
(True or False) You can depend on a magnetic test for 100% accuracy to determine a
ferrous metal.
false
