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| Color, density, electrical and heat conductivity |
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| Hardness, hardenability, ductility, malleability, toughness, machinability, weldability, Strength |
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| Ability to resist penetration |
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| Ability to be hardened by heat-treatment |
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| Tendency to fracture with little or no bending |
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| Ability of a material to be deformed in tension and compression without fracture. |
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| Ability of a material to be deformed in compression only without fracture. |
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| Ability to withstand sudden shock without breaking (fracturing). |
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| Ease with which metals may be machined, or cut by a machine tool. |
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| Ability of molten metal to join together |
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| Ability to resist deformation |
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Definition
Tensile Strength
Compressive Strength
Shear Strength
Torsional Strength |
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Definition
| Ability to resist pulling apart |
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| Resistance to being squeezed or compressed. |
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| Resistance to cutting or slicing forces |
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| Resistance to twisting forces. |
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| Ability to return to normal size after loading |
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| Maximum pressure without causing permanent deformation |
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| Permanent shape change after loading caused by exceeding elastic limit. |
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| Failure can be caused by a stress (force) much below the elastic limit of the material |
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| Mixture of two or more metals or with other elements such as carbon |
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| What is the safest way to remove sharp metal chips from a machine? |
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| High carbon irons that have silicon (Si) and graphitic carbon present |
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Definition
| Pure iron with slag stringers that add strength |
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Term
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Definition
| Iron and carbon alloys with below 1.7% carbon and do not contain Si as an alloying element |
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Definition
| Pig iron and steel scrap are melted to increase purity of iron in a cupola furnace or electric induction furnace. |
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| Molten cast iron when cooled quickly will form compounds called iron-carbides (cementite) instead of graphite. |
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Definition
| Start with white iron and heat treat for up to 120 hours in order to form temper carbon from carbides. |
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| Ductile cast Iron (Looks) |
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| Magnesium is added to molten cast iron with low sulfur and spheroidal graphite is formed (nodules). |
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| what is aluminum's density compared to steel |
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Definition
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| ore from which aluminum;m is made |
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Definition
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| what do you put in the blast furnace to burn |
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Definition
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| approximate melting temp of aluminum |
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Definition
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| what does four digits represent |
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Definition
| not a cast material, but for machining |
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| alloy; of copper and zinc |
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Definition
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| what would nickel be used for |
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Definition
| used for high temperature strength |
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| like cake batter, taste to see what is needed to add. people in hippie marts throwing buckets of material into the crucible |
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Term
| number of teeth in contact |
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Definition
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| what elements are added to steel to make it more machineable |
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Definition
| sulfur, lead, phosphorous |
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Term
| Letter T stands for what kind of head treatment in aluminum |
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Definition
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Term
| what do we use low carbon steel for |
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Definition
| cheap, not heat treatable(Fenders, Automobiles, pipes, rivets) |
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Term
| steel made in an electric arc furnace is made with what |
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Definition
| more expensive, higher cost steel, heavily alloyed |
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Term
| what kind of product would you make from a hardened die? |
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Definition
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| coating steel with zinc makes it |
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Definition
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Definition
| ally similar to lead, low melting temp, used in bearings. |
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| most common dimension to be expressed in machinists |
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Definition
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Term
| how thick is a piece of paper |
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Definition
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| sheet metal gauge goes up, what does thickness do? |
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Definition
| material gets thinner. number goes up thickness goes down. |
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Term
| low grade iron ore(really low iron) transported on trains |
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Definition
| taconite (looks like rabbit poop) |
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Term
| iron ore to pig iron conversion methods |
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Definition
| basic oxygen furnace, electric arc furnace, Bessemer converter, open hearth, BLAST FURNACE |
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| Material mixed with coke to remove slag |
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Definition
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| what is the Eifle tower made of |
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Definition
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| approximately what percent of carbon is in steel |
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| furnace to make alloy steel |
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| cast liquid steel directly into slabs blooms or something what kind of casting am i doing |
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Definition
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| sheets bars and other plates what process |
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Definition
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| how do you remove the scale on hot mill |
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Definition
| pickle in sulfuric acid then run through lime water |
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Term
| what kind of carbon range will a low carbon steel have |
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Definition
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| what kind of carbon range will a medium steel have |
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Definition
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| what kind of carbon range will a high carbon steel have |
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Definition
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| steels that are made especially for machining |
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Definition
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| metal alloyed with steel is responsible for the corrosion existence |
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Definition
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Term
| Reading the vernier caliper |
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Definition
.000-under an inch
.800-past point .8
.025-one mark past
.012-lines up best |
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Term
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Definition
.000-Smallest Measurement
.300-Largest sleeve reading
.025-One mark past largest sleeve reading
.016-Thimble Reading |
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Term
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Definition
| Third most abundant element in the form of Al2O3 and other compounds |
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| how much more expensive than steel is aluminum |
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Definition
| More expensive than steel 4-5x |
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| 2024 Structural and machining |
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Definition
| Highest strength, aircraft |
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Term
| What education is required to become a technician? A technologist? An engineer? |
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Definition
| to become a technician one must graduate highschool and obtain 2 years of post highschool training. A technologist must graduate from a four year college. An Engineer much have a college education to obtain an engineering degree |
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| Name two principal ways of increasing metal hardness |
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Definition
| Hardness may be increased by cold working such as bending, hammering, or rolling at room temp. Hardness may also be increased or decreased by treating the metal in different ways with heat. |
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| In what kinds of metal parts is toughness more important than hardness? |
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Definition
| Parts such as steering knuckles, springs, axles, and other critical auto parts. |
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Term
| name several uses for each of the three groups of plain carbon steels. low-carbon |
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Definition
| used for forge work, rivets, chains, an machine parts that do not need great strength. |
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Term
| name several uses for each of the three groups of plain carbon steels. medium-carbon |
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Definition
| used for bolts, shafts, car axles, rails, and other parts or tools that require strong metal. |
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Term
| name several uses for each of the three groups of plain carbon steels. high-carbon |
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Definition
| used to make such tools as drills, taps, dies, reamers, files, cold chisels, crowbars, and hammers. |
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Term
| describe magnesium, what are its important properties and uses?> what hazard is involved in machining it |
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Definition
| a silvery white, light malleable metal that is much lighter than aluminum. it has low tensile strength. it may be alloyed with zinc, silicon, copper, nickel, manganese, iron, or tin. it burns very easily in pure form |
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Term
| what is the decimal equivalents of1/16 1/32 1/64 |
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Definition
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Term
| what is the following numbers in number form. six hundred twenty five thousandths |
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