brass hole
DESCRIPTION
Brass Hole. By Robbie Pham. What is Brass?. Different types of Brass Must contain varying amounts of copper and zinc Copper typically in highest quantity. Properties of brass include: Characteristic gold color Malleable (hammered into sheets) Resistant to corrosion - PowerPoint PPT PresentationTRANSCRIPT
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Brass HoleBy Robbie Pham
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What is Brass?•Different types of
Brass•Must contain
varying amounts of copper and zinc
•Copper typically in highest quantity
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•Properties of brass include:▫Characteristic gold color▫Malleable (hammered into sheets)▫Resistant to corrosion▫Acoustic properties (musical instruments)▫Nonmagnetic
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•Different elements added to change properties of brass▫Tin or aluminum
( harder and corrosion resistant)
▫Combinations of aluminum, iron, silicon, and manganese for wear and tear resistance
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Brass in Time•Very difficult to make due to melting point
of zinc•Copper was ground and melted with ores
containing zinc•Used in:
▫Jewelry▫Helmets▫Coins▫Church decorations and mirrors▫Clocks▫Navigational aids
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•Brazen bull was torture device that took advantage of heat conducting properties of brass
•Set of tubes and pipes could be used to make screams seem like cow sounds
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Brass Today•Easily
manufactured•Fittings (bolts and
nuts)•Fixtures
(doorknobs, locks) ▫Doorknobs in
hospitals because bacteria die within eight hours
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• Rifle cartridges• Musical instruments