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Questions and Answers
Identify the typical characteristics of metal.
Identify the typical characteristics of metal.
Ductile, Malleable, Fusible
What is the term for the maximum stress in the stress-strain curve of metal?
What is the term for the maximum stress in the stress-strain curve of metal?
Ultimate strength
According to the NSCP, what is the value of the modulus of elasticity for steel in MPa?
According to the NSCP, what is the value of the modulus of elasticity for steel in MPa?
200,000 MPa
Define the term for a rock containing sufficient minerals with metals for economic extraction.
Define the term for a rock containing sufficient minerals with metals for economic extraction.
Name the ore classification from which iron can be extracted.
Name the ore classification from which iron can be extracted.
What stage in tension testing indicates strength increase after yielding?
What stage in tension testing indicates strength increase after yielding?
What is the principal element of ferrous metals?
What is the principal element of ferrous metals?
True or False: The use of chemical reagents like carbon monoxide gas can refine metals.
True or False: The use of chemical reagents like carbon monoxide gas can refine metals.
Identify processes used for extracting metal from ore.
Identify processes used for extracting metal from ore.
Which operation is not a main step in metal production?
Which operation is not a main step in metal production?
What causes the degrading result of metal oxidation?
What causes the degrading result of metal oxidation?
What is an alloy of iron and carbon?
What is an alloy of iron and carbon?
Define the property of metal that resists impact without permanent deformation.
Define the property of metal that resists impact without permanent deformation.
What is the stress that causes rupture at high temperatures over time?
What is the stress that causes rupture at high temperatures over time?
What term describes the progressive fracture of metal under repeated loading?
What term describes the progressive fracture of metal under repeated loading?
Name the process of coating metal by hot-dipping it in zinc.
Name the process of coating metal by hot-dipping it in zinc.
What property allows metal to resist scratches or surface cuts?
What property allows metal to resist scratches or surface cuts?
Name the methods to prevent oxidation of metal.
Name the methods to prevent oxidation of metal.
What is pyrometallurgy also known as?
What is pyrometallurgy also known as?
Define the property of metal to change shape under hammering.
Define the property of metal to change shape under hammering.
What is the modulus of the area under the elastic portion of the stress-strain curve of metal?
What is the modulus of the area under the elastic portion of the stress-strain curve of metal?
What term is used for the non-commercial material associated with ore?
What term is used for the non-commercial material associated with ore?
Name the stress that leads to rupture over time and high temperature.
Name the stress that leads to rupture over time and high temperature.
True or False: Most alloy steel used in construction forms carbides with carbon.
True or False: Most alloy steel used in construction forms carbides with carbon.
What is the carbon content range of medium carbon steel?
What is the carbon content range of medium carbon steel?
Which steel has the lowest carbon content?
Which steel has the lowest carbon content?
Which impurity can be beneficial in small quantities but detrimental at larger amounts?
Which impurity can be beneficial in small quantities but detrimental at larger amounts?
On what property is the grade of steel reinforcing bars based?
On what property is the grade of steel reinforcing bars based?
Name the two types of furnaces for primary steel production.
Name the two types of furnaces for primary steel production.
What is the process of heating and cooling steel to achieve desired properties?
What is the process of heating and cooling steel to achieve desired properties?
Name the basic quenching media for steel.
Name the basic quenching media for steel.
True or False: Cast iron can become malleable with special annealing treatment.
True or False: Cast iron can become malleable with special annealing treatment.
True or False: Steel alloys can be made stronger and more corrosion-resistant for construction.
True or False: Steel alloys can be made stronger and more corrosion-resistant for construction.
Identify the most undesirable impurity in steel.
Identify the most undesirable impurity in steel.
What process removes impurities in molten iron by oxidation?
What process removes impurities in molten iron by oxidation?
What composite is made of veneers glued together?
What composite is made of veneers glued together?
List advantages of seasoned lumber over green lumber.
List advantages of seasoned lumber over green lumber.
What is the typical size of plywood?
What is the typical size of plywood?
Which statement about wood is false?
Which statement about wood is false?
What is the central core of a log composed of inactive cells for mechanical support?
What is the central core of a log composed of inactive cells for mechanical support?
How many board feet are in 4 pieces of 2” x 4” x 16'?
How many board feet are in 4 pieces of 2” x 4” x 16'?
What chemical component of wood glues cells together?
What chemical component of wood glues cells together?
At what moisture content does wood shrinkage begin?
At what moisture content does wood shrinkage begin?
Name the wood preservatives listed.
Name the wood preservatives listed.
What is the method of seasoning wood by heating to remove moisture?
What is the method of seasoning wood by heating to remove moisture?
What is the term for wood rough sawn and cut to standard lengths?
What is the term for wood rough sawn and cut to standard lengths?
Which insects cause wood deterioration?
Which insects cause wood deterioration?
Define the tree classification based on growth by adding concentric layers.
Define the tree classification based on growth by adding concentric layers.
What is the unit of measure for 1 ft x 1 ft x 1 in of wood?
What is the unit of measure for 1 ft x 1 ft x 1 in of wood?
What is the continuous ring of reproductive tissue between the sapwood and bark?
What is the continuous ring of reproductive tissue between the sapwood and bark?
What is the size of lumber when it is first cut from the log?
What is the size of lumber when it is first cut from the log?
Flashcards
Ductility
Ductility
Ability to be deformed under tensile stress.
Malleability
Malleability
Ability to be hammered or pressed permanently out of shape without rupture.
Ultimate Strength
Ultimate Strength
The maximum stress a material can withstand before breaking.
Ore
Ore
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Smelting
Smelting
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Metal Oxidation
Metal Oxidation
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Steel
Steel
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Toughness
Toughness
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Fatigue
Fatigue
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Galvanizing
Galvanizing
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Hardness
Hardness
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Annealing
Annealing
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Creep
Creep
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Ultimate Tensile Strength
Ultimate Tensile Strength
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Wide-Flange Steel
Wide-Flange Steel
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Slag
Slag
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Carbon Content
Carbon Content
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Plywood
Plywood
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Seasoned Lumber
Seasoned Lumber
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Lignin
Lignin
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Study Notes
Short Quiz 8: Metals
- Typical metal characteristics include ductility, malleability, and fusibility
- Ultimate strength is the maximum stress in a stress-strain curve
- The modulus of elasticity for steel is 200,000 MPa according to NSCP
- Ore is a rock containing sufficient metals for economic extraction
- Iron can be extracted from oxide or carbonate ores
- Strain hardening is a stage in tension testing after yielding where strength increases
- The principal element of ferrous metals is iron
- Chemical reagents like carbon monoxide can refine metals (True)
- Metal extraction processes include smelting and leaching
- Galvanizing is not a main step in metal production
- Metal oxidation degradation is caused by corrosion
- Steel is an alloy of iron and carbon
- Toughness is a metal property resisting impact without permanent deformation
- Stress rupture is the stress causing rupture at high temperatures over time
- Progressive fracture under repeated loading is called fatigue
- Hot-dipping in zinc is called galvanizing
- Materials can be refined using chemical reagents like carbon monoxide (True)
- Hardness is a property resisting scratches or surface cuts
- Methods to prevent metal oxidation include concrete encasing, galvanizing, painting, asphalt coating, etc.
- Pyrometallurgy is also known as smelting
- Malleability is the property of changing shape under hammering
- Modulus of the elastic portion of a stress-strain curve is the area under the elastic portion
- Ore is non-commercial material associated with ore
- Stress rupture is the stress that leads to rupture over time at high temperatures
Short Quiz 9: Steel
- Most alloy steels form carbides with carbon (False)
- The carbon content range of medium carbon steel is not specified
- Mild steel has the lowest carbon content
- Manganese is a beneficial impurity in small quantities but detrimental in larger quantities
- Steel reinforcing bars grade is based on yield strength
- Types of primary steel production furnaces are basic oxygen and electric arc furnaces
- Steel treatment involving heating and cooling is called annealing
- Common quenching media for steel include oil, water, and brine
- Cast iron can be made malleable with annealing treatment (True)
- Steel alloys can be made stronger and resistant to corrosion (True)
- Phosphorus is the most undesirable impurity in steel
- Impurities are removed from molten iron by oxidation in the Bessemer process
Short Quiz 10: Wood
- Veneers glued together form plywood
- Seasoned lumber has advantages over green lumber (e.g., reduced weight, better dimensional stability)
- Typical plywood size is 4' x 8'
- Wood composition does not include inactive cells for mechanical support (False)
- There are 48 board feet in 4 pieces of 2" x 4" x 16'
- Lignin glues wood cells together
- Wood shrinkage begins at a moisture content of approximately 30%
- Wood preservatives include chromated copper arsenate, coal tar creosote, and pentachlorophenol
Long Quiz 3
- Creep is the slow flow of metal under sustained stress at high temperatures
- Energy required to fracture a metal (measured from a stress-strain curve is called modulus of toughness.
- Toughness is a metal property resisting large plastic deformation without fracture
- Maximum stress on a stress-strain curve of a metal is called ultimate tensile strength
- I-shaped steel section with wide flanges is called wide-flange steel
- Waste and impurities on molten steel are called slag
- Carbon content significantly affects steel properties
- Yield strength of A36 wide flange steel is not specified
- High-carbon steel is not specified
- Bonding agent in wood is lignin
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