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Cadi 182 Copper Alloy
Categories: Metal; Nonferrous Metal; Copper Alloy

Material Notes: Chromium copper is the primary copper alloy used for resistance spot and seam welding. This alloy achieves good hardness and electrical conductivity through a combination of heat treatment and cold work. C18200 is utilized for electrodes, holders, adaptors, as well as numerous electrical applications where resistance to deformation at high temperature is required or when higher mechanical properties than C11000 are required.

Forms:

  • Rod
  • Bar
  • Plate
  • Shapes
  • Tube

Information provided by Cadi Company.

Key Words: MIL-C-19311B, UNS C18200
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Physical PropertiesMetricEnglishComments
Density 8.89 g/cc0.321 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell B  65
@Diameter 50.8 - 76.2 mm
65
@Diameter 2.00 - 3.00 in
 70
@Diameter 25.4 - 50.8 mm
70
@Diameter 1.00 - 2.00 in
 >= 75
@Diameter <=25.4 mm
>= 75
@Diameter <=1.00 in
heat treated
Tensile Strength at Break >= 379 MPa>= 55000 psiAny thickness
Tensile Strength, Yield >= 379 MPa
@Strain 0.5 %
>= 55000 psi
@Strain 0.5 %
Any thickness
Modulus of Elasticity 117 GPa17000 ksi
Poissons Ratio 0.1810.181
Shear Modulus 49.6 GPa7200 ksi
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity <= 0.00000382 ohm-cm<= 0.00000382 ohm-cm>75% IACS, up to 3" diameter/any thickness
 
Thermal PropertiesMetricEnglishComments
Thermal Conductivity 323.4 W/m-K2244 BTU-in/hr-ft²-°F
Melting Point 1070 - 1080 °C1958 - 1976 °F
Solidus 1070 °C1958 °F
Liquidus 1080 °C1976 °F
 
Processing PropertiesMetricEnglishComments
Processing Temperature 649 °C1200 °FBrazing, <15 minutes
 
Component Elements PropertiesMetricEnglishComments
Chromium, Cr 0.90 %0.90 %
Copper, Cu 99.1 %99.1 %
 
Descriptive Properties
RMWA Class2

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NCADI12 / 15520

Specialty Compounds RTP Company

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