Copper-Nickel, Chromium Bearing, UNS C72200

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Copper-Nickel, Chromium Bearing, UNS C72200
Categories:	Metal; Nonferrous Metal; Copper Alloy
Material Notes:	Good to excellent corrosion resistance. Good hot and cold workability. Fabricated by forming, bending, and welding. Applications: condenser and heat exchanger tubing, salt water piping. Available as flat products and tube.
Key Words:	Cupronickel with Cr
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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	315 MPa	45700 psi	O61 temper
	480 MPa	69600 psi	H04 temper
Tensile Strength, Yield	125 MPa @Strain 0.2 %	18100 psi @Strain 0.2 %	O61 temper
	455 MPa @Strain 0.2 %	66000 psi @Strain 0.2 %	H04 temper
Elongation at Break	6.0 %	6.0 %	H04 temper
	46 %	46 %	O61 temper
Modulus of Elasticity	135 GPa	19600 ksi
Poissons Ratio	0.23	0.23	Calculated
Shear Modulus	55.0 GPa	7980 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000264 ohm-cm @Temperature 20.0 °C	0.0000264 ohm-cm @Temperature 68.0 °F

Thermal Properties	Metric	English	Comments
CTE, linear	15.8 µm/m-°C @Temperature 20.0 - 300 °C	8.78 µin/in-°F @Temperature 68.0 - 572 °F
Specific Heat Capacity	0.396 J/g-°C	0.0946 BTU/lb-°F
Thermal Conductivity	34.5 W/m-K @Temperature 20.0 °C	239 BTU-in/hr-ft²-°F @Temperature 68.0 °F
Melting Point	1122 - 1176 °C	2052 - 2149 °F
Solidus	1122 °C	2052 °F
Liquidus	1176 °C	2149 °F
Annealing Point	732 - 816 °C	1350 - 1500 °F

Processing Properties	Metric	English	Comments
Annealing Temperature	730 - 815 °C	1350 - 1500 °F
Hot-Working Temperature	900 - 1040 °C	1650 - 1900 °F

Component Elements Properties	Metric	English	Comments
Carbon, C	<= 0.030 %	<= 0.030 %
Chromium, Cr	0.30 - 0.70 %	0.30 - 0.70 %
Copper, Cu	82 %	82 %
Iron, Fe	0.50 - 1.0 %	0.50 - 1.0 %
Manganese, Mn	0.40 - 0.90 %	0.40 - 0.90 %
Nickel, Ni	15 - 18 %	15 - 18 %
Other, total	<= 0.50 %	<= 0.50 %
Silicon, Si	<= 0.030 %	<= 0.030 %
Titanium, Ti	<= 0.030 %	<= 0.030 %

References for this datasheet.

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MC72200b1 / 11839

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