Beryllium-Copper Alloy 165C, UNS C82400, TB00 Temper

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Beryllium-Copper Alloy 165C, UNS C82400, TB00 Temper
Categories:	Metal; Nonferrous Metal; Beryllium Alloy; Copper Alloy; Copper Casting Alloy
Material Notes:	High strength combined with the highest modulus of elasticity of any copper alloy makes this a good spring material. Fairly high electrical conductivity, a corrosion resistance comparable to copper, and outstanding fatigue strength and wear resistance. Casting methods recommended for this alloy: Centrifugal, Investment, Permanent Mold, Plaster, and Sand. Applications: seam welder electrodes, projection welder dies, spot welding tips, beam welder shapes, water cooled holders, arms bushing for resistance welding, clutch rings, brake drums. Test specimen: TB00 temper, solution treated at 800-815°C.
Key Words:	BeCu; beryllium copper alloy 165C, CA 824, FED QQ-C-390 (CA824)
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Physical Properties	Metric	English	Comments

Density	8.31 g/cc	0.300 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell B	59	59
Tensile Strength, Ultimate	415 MPa	60200 psi
Tensile Strength, Yield	140 MPa @Strain 0.2 %	20300 psi @Strain 0.2 %
Elongation at Break	40 %	40 %	In 50 mm
Modulus of Elasticity	128 GPa	18600 ksi
Poissons Ratio	0.30	0.30
Machinability	30 %	30 %	UNS C36000 (free-cutting brass) = 100%
Shear Modulus	50.0 GPa	7250 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000690 ohm-cm @Temperature 20.0 °C	0.0000690 ohm-cm @Temperature 68.0 °F

Thermal Properties	Metric	English	Comments
CTE, linear	17.0 µm/m-°C @Temperature 20.0 - 200 °C	9.44 µin/in-°F @Temperature 68.0 - 392 °F
Specific Heat Capacity	0.420 J/g-°C	0.100 BTU/lb-°F
Thermal Conductivity	109 W/m-K @Temperature 20.0 °C	756 BTU-in/hr-ft²-°F @Temperature 68.0 °F
Melting Point	865 °C	1590 °F	Incipient
	900 - 1000 °C	1650 - 1830 °F
Solidus	900 °C	1650 °F
Liquidus	995 °C	1820 °F
Shrinkage	1.56 %	1.56 %	Patternmaker's Shrinkage (3/16 in./ft.)

Processing Properties	Metric	English	Comments
Solution Temperature	790 - 815 °C	1450 - 1500 °F
Aging Temperature	345 °C	653 °F
Casting Temperature	1025 - 1080 °C	1877 - 1980 °F	Heavy castings
	1080 - 1135 °C	1980 - 2075 °F	Light castings

Component Elements Properties	Metric	English	Comments
Aluminum, Al	<= 0.15 %	<= 0.15 %
Beryllium, Be	1.65 - 1.75 %	1.65 - 1.75 %
Chromium, Cr	<= 0.10 %	<= 0.10 %
Cobalt, Co	0.20 - 0.40 %	0.20 - 0.40 %
Copper, Cu	>= 96.4 %	>= 96.4 %
Iron, Fe	<= 0.20 %	<= 0.20 %
Lead, Pb	<= 0.020 %	<= 0.020 %
Nickel, Ni	<= 0.10 %	<= 0.10 %
Tin, Sn	<= 0.10 %	<= 0.10 %
Zinc, Zn	<= 0.10 %	<= 0.10 %

References for this datasheet.

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MC82400b3 / 11879

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