C12200 (ASTM B152) Alloy Data Specifications

C122 is a copper that has been deoxidized with phosphorus and is excellent for deep drawing and other applications that require severe forming. It has the added advantage of being free from risk of hydrogen embrittlement when heated for brazing, welding, soldering or annealing in atmospheres containing hydrogen. Primarily used in pipes caps, brazed heat exchangers other applications that require high temperature joining or severe forming, C122 is also used in many electrical applications. For more information contact Olin Brass Market Development Engineering at 618-258-5255, OlinBrass.com or email us at info@olinbrass.com.

 

Chemical Composition

Copper1 99.9% min
Phosphorus 0.015-0.040%

1Copper values includes Ag. 

Physical Properties

  English Units Metrics Units
Density 0.323 lb/in3 @ 68oF 8.94 g/cm3
Thermal Conductivity 196 BTU-ft/ft2-hr-oF 339 W/mK
Electrical Resistivity 12.2 ohm circ mils/ft 2.03 microhm-cm
Electrical Conductivity (annealed) 85% IACS* 0.493 megamho/cm
Modulus of Elasticity 17,000,000 psi 117 kN/mm2
Coeff. of Thermal Expansion
  68-572oF (20-300oC) 9.8 PPM/oF 17.64 PPM/oC

*International Annealed Copper Standard

Mechanical Properties

Temper1 Tensile Strength Yield Strength2 % Elongation2 Typical 90o Bend Formability GW/BW3
ksi N/mm2 ksi N/mm2
Annealed (Soft)4 26-38 180-260 10 70 35 - -
1/4 Hard 34-42 235-290 32 220 23 - -
1/2 Hard 37-46 255-315 37 255 20 0.3 0.5
3/4 Hard 41-50 285-345 43 295 14 0.5 1.0
Hard 43-52 295-360 45 310 9 1.0 1.3
Extra Hard 47-56 325-385 50 345 4 1.5 1.8
Spring 50-58 345-400 52 360 3 2.0 2.5
Extra Spring 52 min 360 min 51 min 350 min 3 max

1Mechanical properties subject to change. All rolled-tempers are accepted or rejected based on Tensile Strength.
2Nominal Values in 2" (51mm)
3DATA FOR REFERENCE ONLY. R/T = Bend Radius/Material Thickness <0.016" (0.4mm) thick, 11/16 (17.5mm) wide.
4Annealed temper are manufactured to a grain size only, consult mill for additional info.