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Elmet Technologies

Copper, UNS C70250, TM04 Temper strip
Categories: Metal; Nonferrous Metal; Copper Alloy
Material Notes: High strength and good formability. Good stress relaxation resistance and moderate conductivity.

Applications:contact springs, connectors, and lead frames.

Test specimen: strip.
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Density 8.80 g/cc0.318 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Modulus of Elasticity 131 GPa19000 ksi
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.00000431 - 0.00000493 ohm-cm
@Temperature 20.0 °C		0.00000431 - 0.00000493 ohm-cm
@Temperature 68.0 °F
 
Thermal PropertiesMetricEnglishComments
CTE, linear 17.6 µm/m-°C
@Temperature 20.0 - 300 °C		9.78 µin/in-°F
@Temperature 68.0 - 572 °F
Thermal Conductivity 147 - 190 W/m-K1020 - 1320 BTU-in/hr-ft²-°F
Melting Point 1075 - 1095 °C1967 - 2003 °F
Solidus 1075 °C1967 °F
Liquidus 1095 °C2003 °F
 
Component Elements PropertiesMetricEnglishComments
Copper, Cu 92.35 - 97.5 %92.35 - 97.5 %As remainder
Iron, Fe <= 0.20 %<= 0.20 %
Lead, Pb <= 0.050 %<= 0.050 %
Magnesium, Mg 0.050 - 0.30 %0.050 - 0.30 %
Manganese, Mn <= 0.10 %<= 0.10 %
Nickel, Ni 2.2 - 4.2 %2.2 - 4.2 %
Other, total <= 0.50 %<= 0.50 %
Silicon, Si 0.25 - 1.2 %0.25 - 1.2 %
Zinc, Zn <= 1.0 %<= 1.0 %

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