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26 Cards in this Set
- Front
- Back
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What is the most widely used of all aluminum alloys? |
3003 (1100 pure aluminum with the addition of manganese increases the strength by 20%) |
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What is 2024 aluminum used for? |
Aircraft structural components, aircraft fittings, hardware, truck wheels, and parts for the transportation industry. |
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What is the least expensive and most versatile of the heat treatable aluminum alloys? |
6061 |
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What does the T designation for aluminum mean? |
Heat treatable alloy. |
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What does the H designation in aluminum mean? |
Non-heat treatable alloy. |
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In the Temper designations what does O mean? |
Annealed. |
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What is 430 stainless used for? |
Decorative like automotive trim. Is ferritic (magnetic). Has good formability but with reduced corrosion resistance. |
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What is the oxide that forms on copper? |
Patina |
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The ability of material to be worked without breaking is called... |
Ductile |
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The strength of a material to withstand a pulling force is called... |
Tensile |
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What material is the most likely to corrode? |
Magnesium |
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What metal is the least likely to corrode? |
Copper. |
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When using a cut off saw you must wear? Safety glasses. Full face shield. |
Full face shield |
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Which bench machine is used to form a radius flange and has no gauge? |
Easy edger |
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When setting rivets, how much should be projecting to form a proper head? |
1.5 x diameter of rivet |
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What is the total allowance for a 5/16” groove seam? |
15/16” (3 x width) |
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Which has the longest stretch out? Inside diameter Mean diameter Outside diameter All of the above |
Inside diameter (For a cylinder, ID + 1 material thickness x pi = stretch out) |
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What two metals does brass contain? |
Copper & tin |
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What is a sheet coated with lead & tin called? |
Terne plate. |
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How far should an extension ladder project past the top of a roof? |
3 feet |
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What is the allowance for a 3/16” wired edge? |
15/32” (3/16 x 2.5) |
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What is the allowance for a double seam? |
3 x seam size |
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What are the three angles of weather cap? |
120 degree top point and 2 @ 30 degree bottoms |
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A knot tied in rope will reduce its breaking strength by? |
50% |
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Rivet length is determined by what formula? |
(Diameter of rivet x 1.5) + material |
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Which file removes the least amount of material? Dbl cut Rasp Bastard Single cut |
Single cut |
