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Elmet Technologies

Chromium Copper, UNS C18200, O61 Temper, Tube
Categories: Metal; Nonferrous Metal; Copper Alloy
Material Notes: Temper: Annealed

Fabrication Properties: Excellent Suitability – Capacity for Being Cold Worked; Good Suitability – Soldering, Brazing, Gas Shielded Arc Welding, Capacity for Being Hot Formed; Fair Suitability – Butt Weld

Common Fabrication Processes: Bending; Cold working; Drawing; Extruding; Forging; Heading; Hot working; Impacting; Rolling; Swaging

Typical uses: Pencil-type & Light Soldering Guns: Tips, Rod Extensions; Arcing and Bridging Parts; Cable; Circuit Breaker Parts; Connectors; Contacts; Electric Motor and Generator Components; Electrical Conductors Requiring Greater Strength than Copper; Electrical Connectors; Electron Tube Grid Side Rods; Parts for Electronic Devices; Semi Conductor Bases; Switch Contacts; Switch Gears; Thermal Conductors Requiring Greater Strength than Copper; Wire, High Temperature; Current Carrying Shafts and Arms; Electrode Holder Jaws; Flash Welding Electrodes; Heat Sinks; Molds; Plastic Mold Components; Resistance Welding Machine Electrodes; Seam Welding Wheels; Spot Welding Tips; Structural Parts; Wear Plates on Heavy Equipment

Applicable Specifications: Bar – MILITARY MIL-C-19311; Forgings – MILITARY MIL-C-19311; Rod – MILITARY MIL-C-19311; Strip – MILITARY MIL-C-19311; Wire – Soft ASTM F9
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Physical PropertiesMetricEnglishComments
Density 8.89 g/cc0.321 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength 276 MPa
@Thickness 2.39 mm		40000 psi
@Thickness 0.0940 in
Tensile Strength, Yield 103 MPa
@Thickness 2.39 mm		15000 psi
@Thickness 0.0940 in		0.5% Ext
Elongation at Break 50 %
@Thickness 2.39 mm		50 %
@Thickness 0.0940 in
Tensile Modulus 117 GPa17000 ksi
Modulus of Rigidity 49.6 GPa7200 ksi
Machinability 40 %40 %
Forgeability 80 %80 %
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.00000220 ohm-cm0.00000220 ohm-cm80% IACS
 
Thermal PropertiesMetricEnglishComments
CTE, linear 17.6 µm/m-°C
@Temperature 20.0 - 100 °C		9.80 µin/in-°F
@Temperature 68.0 - 212 °F
Specific Heat Capacity 0.385 J/g-°C0.0920 BTU/lb-°F
Thermal Conductivity 26.9 W/m-K187 BTU-in/hr-ft²-°F
Melting Point 1070 - 1075 °C1958 - 1967 °F
Solidus 1070 °C1958 °F
Liquidus 1075 °C1967 °F
 
Processing PropertiesMetricEnglishComments
Solution Temperature 1000 - 1030 °C
@Time 15.0 sec		1832 - 1886 °F
@Time 0.00417 hour		Air
Hot-Working Temperature 816 - 927 °C1500 - 1700 °F
Precipitation Temperature 460 °C860 °FAir
 
Component Elements PropertiesMetricEnglishComments
Chromium, Cr 0.60 - 1.2 %0.60 - 1.2 %
Copper, Cu 98.6 - 99.4 %98.6 - 99.4 %As Balance
Iron, Fe <= 0.10 %<= 0.10 %
Lead, Pb <= 0.050 %<= 0.050 %
Silicon, Si <= 0.10 %<= 0.10 %

References for this datasheet.

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MC18200x8 / 292849

Ensinger PEI




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