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produto de cobre

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produto de cobre

As ligas de cobre são ligas metálicas que têm o cobre como principal componente. Possuem alta resistência à corrosão. Os tipos tradicionais mais conhecidos são o bronze, onde o estanho é uma adição significativa, e o latão, usando zinco.

A semelhança na aparência externa das várias ligas, juntamente com as diferentes combinações de elementos usados ​​na fabricação de cada uma. liga, pode causar confusão na categorização das diferentes composições. Existem até 400 composições diferentes de cobre e ligas de cobre agrupadas vagamente nas categorias: cobre, liga de alto cobre, latão, bronze, cobre-níquel, cobre-níquel-zinco (níquel prata), cobre com chumbo e ligas especiais.

Especificações

Classification of copper and its alloys
FamilyPrincipal alloying elementUNS numbers
Copper alloys, brassZinc (Zn)C1xxxx–C4xxxx,C66400–C69800
Phosphor bronze
Tin (Sn)C5xxxx
Aluminium bronzes
Aluminium (Al)C60600–C64200
Silicon bronzesSilicon (Si)C64700–C66100
Cupronickel, nickel silversNickel (Ni)C7xxxx
Mechanical properties of common copper alloys
NameNominal composition (percentages)Form and conditionYield strength (0.2% offset, ksi)Tensile strength (ksi)Elongation in 2 inches (percent)Hardness (Brinell scale)Comments
Copper (ASTM B1, B2, B3, B152, B124, R133)Cu 99.9Annealed10324542Electrical equipment, roofing, screens
""Cold-drawn40451590"
""Cold-rolled40465100"
Gilding metal (ASTM B36)Cu 95.0, Zn 5.0Cold-rolled50565114Coins, bullet jackets
Cartridge brass (ASTM B14, B19, B36, B134, B135)Cu 70.0, Zn 30.0Cold-rolled63768155Good for cold-working; radiators, hardware, electrical, drawn cartridge cases.
Phosphor bronze (ASTM B103, B139, B159)Cu 89.75, Sn 10.0, P 0.25Spring temper1224241High fatigue-strength and spring qualities
Yellow or High brass (ASTM B36, B134, B135)Cu 65.0, Zn 35.0Annealed18486055Good corrosion resistance
""Cold-drawn557015115"
""Cold-rolled (HT)607410180"
Manganese bronze (ASTM 138)Cu 58.5, Zn 39.2, Fe 1.0, Sn 1.0, Mn 0.3Annealed30603095Forgings
""Cold-drawn508020180"
Naval brass (ASTM B21)Cu 60.0, Zn 39.25, Sn 0.75Annealed22564090Resistance to salt corrosion
""Cold-drawn406535150"
Muntz metal (ASTM B111)Cu 60.0, Zn 40.0Annealed20544580Condensor tubes
Aluminium bronze (ASTM B169 alloy A, B124, B150)Cu 92.0, Al 8.0Annealed25706080
""Hard651057210"
Beryllium copper (ASTM B194, B196, B197)Cu 97.75, Be 2.0, Co or Ni 0.25Annealed, solution-treated327045B60 (Rockwell)Electrical, valves, pumps, oilfield tools, aerospace landing gears, robotic welding, mold making 
""Cold-rolled1041105B81 (Rockwell)"
Free-cutting brassCu 62.0, Zn 35.5, Pb 2.5Cold-drawn447018B80 (Rockwell)Screws, nuts, gears, keys
Nickel silver (ASTM B122)Cu 65.0, Zn 17.0, Ni 18.0Annealed25584070Hardware
""Cold-rolled70854170"
Nickel silver (ASTM B149)Cu 76.5, Ni 12.5, Pb 9.0, Sn 2.0Cast18351555Easy to machine; ornaments, plumbing 
Cupronickel (ASTM B111, B171)Cu 88.35, Ni 10.0, Fe 1.25, Mn 0.4Annealed224445Condensor, salt-water pipes
""Cold-drawn tube576015"
CupronickelCu 70.0, Ni 30.0WroughtHeat-exchange equipment, valves
Ounce metal Copper alloy C83600 (also known as "Red brass" or "composition metal") (ASTM B62)Cu 85.0, Zn 5.0, Pb 5.0, Sn 5.0Cast17372560
Gunmetal (known as "red brass" in US)Varies Cu 80-90%, Zn <5%, Sn ~10%, +other elements@ <1%

Chemical composition of copper alloys
FamilyCDAAMSUNSCu [%]Sn [%]Pb [%]Zn [%]Ni [%]Fe [%]Al [%]Other [%]
Red brass833C83300931.51.54
C834009010
8364855BC8360085555
838C8380083467
Semi-red brass844C8440081379
845C84500783712
848C84800763615
Manganese bronzeC86100670.52135Mn 4
862C86200642634Mn 3
8634862BC86300632536Mn 3
8654860AC86500580.539.511Mn 0.25
Tin bronze903C903008884
9054845DC9050088100.3 max2
907C9070089110.5 max0.5 max
Leaded tin bronze922C922008861.54.5
923C923008781 max4
9264846AC92600871012
927C92700881020.7 max
High-leaded tin bronze932C9320083773
934C9340084880.7 max
935C93500855910.5 max
9374842AC937008010100.7 max
938C93800787150.75 max
9434840AC94300705250.7 max
Aluminium bronze952C952008839
953C9520089110
9544870B
4872B
C9540085411
C9541085411Ni 2
955C95500814411
C95600917Si 2
C9570075238Mn 12
958C9580081549Mn 1
Silicon bronzeC8720089Si 4
C874008314Si 3
C875008214Si 4
C87600905.5Si 4.5
878C878008014Si 4
C879006534Si 1
 Chemical composition may vary to yield mechanical properties
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