Beryllium-Copper Alloy 30C, UNS C82200, As-Cast

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Beryllium-Copper Alloy 30C, UNS C82200, As-Cast
Categories:	Metal; Nonferrous Metal; Beryllium Alloy; Copper Alloy; Copper Casting Alloy
Material Notes:	Casting methods recommended for this alloy: Centrifugal, Continuous, Investment, Permanent Mold, Plaster, and Sand. Applications: Clutch rings, brake drums, seam welder electrodes, projection welding dies, spot welding tips, beam welder shapes, bushings, water-cooled holder. Test specimen: as cast.
Key Words:	BeCu; beryllium copper alloy 30C, 35C, 53B, CA 822, RWMA Class III
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Physical Properties	Metric	English	Comments

Density	8.75 g/cc	0.316 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell B	55	55
Tensile Strength, Ultimate	345 MPa	50000 psi
Tensile Strength, Yield	170 MPa @Strain 0.2 %	24700 psi @Strain 0.2 %
Elongation at Break	20 %	20 %	In 50 mm
Modulus of Elasticity	114 GPa	16500 ksi
Poissons Ratio	0.33	0.33
Shear Modulus	43.0 GPa	6240 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000359 ohm-cm @Temperature 20.0 °C	0.0000359 ohm-cm @Temperature 68.0 °F

Thermal Properties	Metric	English	Comments
CTE, linear	16.2 µm/m-°C @Temperature 20.0 - 200 °C	9.00 µin/in-°F @Temperature 68.0 - 392 °F
Specific Heat Capacity	0.420 J/g-°C	0.100 BTU/lb-°F
Thermal Conductivity	183 W/m-K @Temperature 20.0 °C	1270 BTU-in/hr-ft²-°F @Temperature 68.0 °F
Melting Point	1035 - 1115 °C	1895 - 2039 °F
Solidus	1040 °C	1900 °F
Liquidus	1115 °C	2039 °F
Shrinkage	1.56 %	1.56 %	Patternmaker's Shrinkage (3/16 in./ft.)

Processing Properties	Metric	English	Comments
Solution Temperature	900 - 955 °C	1650 - 1750 °F
Aging Temperature	445 - 455 °C	833 - 851 °F
Casting Temperature	1150 - 1200 °C	2100 - 2190 °F	Heavy castings
	1200 - 1260 °C	2190 - 2300 °F	Light castings

Component Elements Properties	Metric	English	Comments
Aluminum, Al	<= 0.10 %	<= 0.10 %
Beryllium, Be	0.35 - 0.80 %	0.35 - 0.80 %
Chromium, Cr	<= 0.10 %	<= 0.10 %
Cobalt, Co	<= 0.20 %	<= 0.20 %
Copper, Cu	>= 96.5 %	>= 96.5 %
Iron, Fe	<= 0.10 %	<= 0.10 %
Lead, Pb	<= 0.020 %	<= 0.020 %
Nickel, Ni	1.0 - 2.0 %	1.0 - 2.0 %
Silicon, Si	<= 0.15 %	<= 0.15 %
Tin, Sn	<= 0.10 %	<= 0.10 %
Zinc, Zn	<= 0.10 %	<= 0.10 %

References for this datasheet.

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MC82200b2 / 11873

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