Copper, UNS C70400

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Copper, UNS C70400
Categories:	Metal; Nonferrous Metal; Copper Alloy
Material Notes:	Good to excellent corrosion resistance. Excellent cold workability, good hot formability. Fabricated by forming, bending and welding. Applications: condensers, evaporators, heat exchangers, ferrules, salt water piping, lithium bromide absorption tubing, shipboard condenser intake systems. Available as flat products and tube.
Key Words:	CDA 704 (95/5)
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Physical Properties	Metric	English	Comments

Density	8.94 g/cc	0.323 lb/in³

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	262 - 531 MPa	38000 - 77000 psi
Tensile Strength, Yield	276 - 524 MPa	40000 - 76000 psi	Depending on temper
Elongation at Break	46 %	46 %	in 50.8 mm.
Modulus of Elasticity	115 GPa	16700 ksi
Poissons Ratio	0.31	0.31	Calculated
Machinability	20 %	20 %	UNS C36000 (free-cutting brass) = 100%
Shear Modulus	44.0 GPa	6380 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000120 ohm-cm @Temperature 20.0 °C	0.0000120 ohm-cm @Temperature 68.0 °F

Thermal Properties	Metric	English	Comments
CTE, linear	17.5 µm/m-°C @Temperature 20.0 - 300 °C	9.72 µin/in-°F @Temperature 68.0 - 572 °F
Specific Heat Capacity	0.380 J/g-°C	0.0908 BTU/lb-°F
Thermal Conductivity	64.0 W/m-K @Temperature 20.0 °C	444 BTU-in/hr-ft²-°F @Temperature 68.0 °F
Melting Point	<= 1125 °C	<= 2057 °F
Liquidus	1125 °C	2057 °F

Processing Properties	Metric	English	Comments
Annealing Temperature	565 - 815 °C	1050 - 1500 °F
Hot-Working Temperature	815 - 950 °C	1500 - 1740 °F

Component Elements Properties	Metric	English	Comments
Copper, Cu	>= 91.2 %	>= 91.2 %
Iron, Fe	1.3 - 1.7 %	1.3 - 1.7 %
Lead, Pb	<= 0.050 %	<= 0.050 %
Manganese, Mn	0.30 - 0.80 %	0.30 - 0.80 %
Nickel, Ni	4.8 - 6.2 %	4.8 - 6.2 %
Zinc, Zn	<= 1.0 %	<= 1.0 %

References for this datasheet.

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MC70400b1 / 11708

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