TPC 105 Metals In the Plant Flashcards
A metals ability to be stretched into wire without breaking is called it’s________. It’s ability to
return to its original shape after being deformed is called its_______
A Ductility; elasticity
B Ductility; malleability
C Malleability; toughness
D Toughness; elasticity
A Ductility; elasticity
Which of the following magnetic materials is an alloy?
A Alnico
B Cobalt
C Iron
D Nickel
A Alnico
A solid and a liquid can exist together at the _______ Adding heat melts more of the solid ______ changing the temperature
A Latent heat of fusion ; by
B Latent heat of fusion; without
C Melting point ; by
D Melting point ; without
D Melting point ; without
An alloy containing iron as the base metal is
A brass
B bronze
C pewter
D steel
D steel
Machinability is the speed and ease with which a metal
A can be brazed or welded
B can be cut on a machine tool
C reaches it’s melting point
D regains it’s original shape after deformation
B can be cut on a machine tool
The maximum amount of stress a material can exert is called it’s
A Ductility
B Hardness
C Shear force
D Yield strength
D Yield Strength
A standard tensile test specimen exerts a resistance force of 8500 lb. What is the stress in the specimen?
A 1700 psi
B 40,000 psi
C 42,500 psi
D 425,000 psi
C 42,500 psi
When a metal supports a heavy load at high temperature, It may undergo
A Creep
B Elastic breakdown
C Metal fatigue
D Strain
A Creep
The mass of a material per unit volume is called it’s
A Density
B Mass
C Specific gravity
D Volume
A Density
The ratio of a material’s density to the density of water is called its
A Density
B Mass
C Specific gravity
D Volume
C Specific gravity
Permanent–mold casting uses
A Metal cores only
B Send cores only
C Both metal and sand cores
D No cores
C Both metal and sand cores
The method of casting metal parts using a spinning mold to force the molten metal away from the center and against the sides of the mold is called _______ casting.
A centrifugal
B die
C permanent
D sand
A centrifugal
Die casting is the ______ of all casting methods. It is used to cast ______ metals.
A fastest ; ferrous
B fastest ; nonferrous
C slowest ; ferrous
D slowest ; nonferrous
B fastest ; nonferrous
Upsetting is the most common method of
A Cold forging
B Die casting
C Extrusion
D Heading
A Cold forging
Pulling rod stock through a tapered die produces
A cord
B sheets
C tubing
D wire
D wire
Because of its higher carbon content, ______ has a lower melting point than_______.
A Cast iron; cementite
B Cast iron; steel
C Steel; cast-iron
D Steel; cementite
B Cast iron; steel
Carbon in cast iron generally makes it easier to
A Bend
B Break
C Cast
D Pour
B break
Malleable cast iron is ______ than white cast iron and has_______ resistance to wear than gray cast iron
A Harder; less
B Harder; more
C Softer; less
D Softer; more
D Softer; more
What kind of cast iron is best for parts that must be hard and strong but not brittle?
A Ferritic
B Gray
C High-alloy
D White
C High- alloy
Open-hearth, basic oxygen, and electric are three types of furnaces used for making
A Cast iron
B coke
C pig iron
D steel
D steel
The most important element added to iron and making steel is
A Carbon
B Cementite
C Ferrite
D Pearlite
A carbon
AISI and SAE our number coding systems that specify the _________ of each kind of __________
Chemical composition ; cast iron
Chemical composition ; steel
Price range; cast iron
Price range ; steel
Chemical composition; steel 
When spark, testing to identify a steel, you should consider spark length________ and___________
Color ; Burst
Color ; temperature
Temperature ; Burst
Temperature ; intensity
Color; burst 
The cold rolled she steel graded_______ quality has a matte finish that holds paint well.
Commercial
Drawing
Physical
Structural
Commercial
All stainless steels contain
Carbon
Chromium
Copper
Silicon
Chromium
Uneven, heating and cooling of metal parts during welding causes
Distortion
incomplete fusion
Inconsistent joints
Week seems
Distortion
In annealing, a metal should be heated to a temperature above its critical temperature, and then
Cooled slowly
Ground
Hammered
Plunged into cold water
Cooled slowly
Before welding a broken gear, you should__________ it in order to avoid distortion
Flash freeze
Grind
Preheat
Quench
Preheat
Steels that are_________ generally have a______ carbon content
cast ; Low
Distorted ; high
Forged ; high
Forged ; low
Forged; low
High carbon steel’s contain_________ percent carbon
0.10 to 0.25
0.25 to 0.55
0.55 to 1.00
More than 1.00
0.55 to 1.00
Copper alloys are made harder by
Annealing
Cold working
Dezincification
Heat treatment 
Cold- working
Copper alloy is that contain lead are relatively________ to _______
Difficult ; cast
Difficult ; machine
Easy ; cast
Easy ; machine
Easy machine
What copper alloy contains 36% to 50% zinc
Alpha brass
Beta brass
Nickel bronze
Nickel silver
Betta brass 
Muntz metal is the strongest
Brass
Bronze
Copper alloy
Nickel silver
Brass
What copper alloy is most widely used for casting
Cupronickel alloy
Nickel silver
ounce metal
Yellow brass
Ounce metal
The process of rolling, a thin layer of aluminum onto a base metal is called
Anodizing
Cladding
Forging
Sintering
Cladding 
What causes aluminum to lose its strength during welding
Deformation
Increase temperature
Melting the surface film
Rapid oxidation
Increase temperature
Intermediate temperature, solders, melt and flow at temperatures of________ to _________ •F
300;500
500;700
700;800
800;900
500;700
When aluminum is exposed to the air, a layer of _____ forms on the surface
Bauxite
Cryolite
Oxide
Silicon
Oxide
In the four-digit aluminum designation number 6053, which digit signifies the main alloying element?
6
0
5
3
6
The two methods of extracting magnesium from brines and ores are___\ and _______
Electrolysis; evaporation
Electrolysis; reduction
Filtration; evaporation
Filtration; reduction
Electrolysis; reduction
Which magnesium casting alloys have the lowest yield strength at high temperatures?
AZ
EK
EZ
ZE
AZ
The letter “a” following the designation for a rolled sheet of magnesium stands for
Alloy
Aluminum
Annealed
Arc weldable
Annealed
Magnesium parts should be gas welded
Only in emergencies
To prevent oxidation
With a welding rod of a different alloy
Without a flux
Only in emergencies
Typical melting and casting methods cannot be used for ________ it can be arc melted using_____ gas
Magnesium; argon
Magnesium; oxygen
Titanium; argon
Titanium; oxygen
Titanium; argon 
Lead and tin are alloyed in various proportions to make
Babbitt
Galena
Nichrome
Solder
Solder
Lead wool can be used to
Form Cold-welded seals
Give special properties to greases
Laminate products
Protect metal against corrosion
Form cold-welded seals
Which nickel Alloy is commonly used for making the heating elements in toasters? (Invar and monel are trade names of the international nickel company)
Invar
Monel
Nichrome
Nickel silver
Nichrome
Galvanizing is the process of coating steel with
Lead
Nickel
Tin
Zinc
Zinc 
Which of the following should you use as a lubricant when machining, zinc
Lard oil
Soap
Tallow
Wax
Lard oil
