Mechanical Properties of Common Copper Alloys
Name Nominal composition (percentages) Form and condition Yield 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 99.9 Annealed 10 32 45 42 Electrical equipment, roofing, screens
Copper (ASTM B1, B2, B3, B152, B124, R133)
Cu 99.9
Cold-drawn 40 45 15 90
Electrical equipment, roofing, screens
Copper (ASTM B1, B2, B3, B152, B124, R133)
Cu 99.9
Cold-rolled 40 46 5 100
Electrical equipment, roofing, screens
Gilding metal (ASTM B36) Cu 95.0, Zn 5.0 Cold-rolled 50 56 5 114 Coins, bullet jackets
Cartridge brass (ASTM B14, B19, B36, B134, B135) Cu 70.0, Zn 30.0 Cold-rolled 63 76 8 155 Good for cold-working; radiators, hardware, electrical, drawn cartridge cases.
Phosphor bronze (ASTM B103, B139, B159) Cu 89.75, Sn 10.0, P 0.25 Spring temper 122 4 241 High fatigue-strength and spring qualities
Yellow or High brass (ASTM B36, B134, B135) Cu 65.0, Zn 35.0 Annealed 18 48 60 55 Good corrosion resistance
Yellow or High brass (ASTM B36, B134, B135)
Cu 65.0, Zn 35.0
Cold-drawn 55 70 15 115
Good corrosion resistance
Yellow or High brass (ASTM B36, B134, B135)
Cu 65.0, Zn 35.0
Cold-rolled (HT) 60 74 10 180
Good corrosion resistance
Manganese bronze (ASTM 138) Cu 58.5, Zn 39.2, Fe 1.0, Sn 1.0, Mn 0.3 Annealed 30 60 30 95 Forgings
Manganese bronze (ASTM 138)
Cu 58.5, Zn 39.2, Fe 1.0, Sn 1.0, Mn 0.3
Cold-drawn 50 80 20 180
Forgings
Naval brass (ASTM B21) Cu 60.0, Zn 39.25, Sn 0.75 Annealed 22 56 40 90 Resistance to salt corrosion
Naval brass (ASTM B21)
Cu 60.0, Zn 39.25, Sn 0.75
Cold-drawn 40 65 35 150
Resistance to salt corrosion
Muntz metal (ASTM B111) Cu 60.0, Zn 40.0 Annealed 20 54 45 80 Condensor tubes
Aluminium bronze (ASTM B169 alloy A, B124, B150) Cu 92.0, Al 8.0 Annealed 25 70 60 80
Aluminium bronze (ASTM B169 alloy A, B124, B150)
Cu 92.0, Al 8.0
Hard 65 105 7 210
Condensor tubes
Beryllium copper (ASTM B194, B196, B197) Cu 97.75, Be 2.0, Co or Ni 0.25 Annealed, solution-treated 32 70 45 B60 (Rockwell) Electrical, valves, pumps, oilfield tools, aerospace landing gears, robotic welding, mold making
Beryllium copper (ASTM B194, B196, B197)
Cu 97.75, Be 2.0, Co or Ni 0.25
Cold-rolled 104 110 5 B81 (Rockwell)
Electrical, valves, pumps, oilfield tools, aerospace landing gears, robotic welding, mold making
Free-cutting brass Cu 62.0, Zn 35.5, Pb 2.5 Cold-drawn 44 70 18 B80 (Rockwell) Screws, nuts, gears, keys
Nickel silver (ASTM B122) Cu 65.0, Zn 17.0, Ni 18.0 Annealed 25 58 40 70 Hardware
Nickel silver (ASTM B122)
Cu 65.0, Zn 17.0, Ni 18.0
Cold-rolled 70 85 4 170
Hardware
Nickel silver (ASTM B149) Cu 76.5, Ni 12.5, Pb 9.0, Sn 2.0 Cast 18 35 15 55 Easy to machine; ornaments, plumbing
Cupronickel (ASTM B111, B171) Cu 88.35, Ni 10.0, Fe 1.25, Mn 0.4 Annealed 22 44 45 Condensor, salt-water pipes
Cupronickel (ASTM B111, B171)
Cu 88.35, Ni 10.0, Fe 1.25, Mn 0.4
Cold-drawn tube 57 60 15
Condensor, salt-water pipes
Cupronickel Cu 70.0, Ni 30.0 Wrought Heat-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 5.0 Cast 17 37 25 60
Gunmetal (known as "red brass" in US) Varies Cu 80-90%, Zn <5%, Sn ~10%, +other elements@ <1%