UNS C81400, Copper Casting Alloy

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UNS C81400, Copper Casting Alloy
Categories:	Metal; Nonferrous Metal; Copper Alloy; Copper Casting Alloy
Material Notes:	Casting methods recommended for this alloy: Centrifugal, Continuous, Investment, Permanent Mold, Plaster, and Sand. Applications: Higher hardness electrical and thermal conductors.
Key Words:	BeCu; Be-modified chrome copper, chromium copper, beryllium copper, 70C, CA 814, RWMA Class II
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Physical Properties	Metric	English	Comments

Density	8.81 g/cc	0.318 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell B	62	62	as cast
	69	69	TF00 temper
Tensile Strength, Ultimate	205 MPa	29700 psi	As cast
	365 MPa	52900 psi	TF00 temper
Tensile Strength, Yield	83.0 MPa @Strain 0.2 %	12000 psi @Strain 0.2 %	as cast
	250 MPa @Strain 0.2 %	36300 psi @Strain 0.2 %	TF00 temper
Elongation at Break	11 %	11 %	in 50 mm, TF00 temper
	35 %	35 %	in 50 mm, as cast
Modulus of Elasticity	110 GPa	16000 ksi
Poissons Ratio	0.341	0.341
Machinability	30 %	30 %	UNS C36000 (free-cutting brass) = 100%, as cast
	40 %	40 %	UNS C36000 (free-cutting brass) = 100%, TF00 temper
Shear Modulus	41.0 GPa	5950 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000250 ohm-cm	0.00000250 ohm-cm	heat treated

Thermal Properties	Metric	English	Comments
CTE, linear	19.0 µm/m-°C @Temperature 20.0 - 300 °C	10.6 µin/in-°F @Temperature 68.0 - 572 °F
Specific Heat Capacity	0.389 J/g-°C	0.0930 BTU/lb-°F
Thermal Conductivity	259 W/m-K @Temperature 20.0 °C	1800 BTU-in/hr-ft²-°F @Temperature 68.0 °F
Melting Point	1065 - 1095 °C	1949 - 2003 °F
Solidus	1065 °C	1949 °F
Liquidus	1095 °C	2003 °F
Shrinkage	1.96 %	1.96 %	Patternmaker's Shrinkage

Processing Properties	Metric	English	Comments
Solution Temperature	1000 - 1010 °C	1830 - 1850 °F
Aging Temperature	480 °C	896 °F
Precipitation Temperature	482 °C @Time 108 sec	900 °F @Time 0.0300 hour	Air
Casting Temperature	1175 - 1230 °C	2147 - 2250 °F	Heavy castings
	1200 - 1260 °C	2190 - 2300 °F	Light castings

Component Elements Properties	Metric	English	Comments
Beryllium, Be	0.020 - 0.10 %	0.020 - 0.10 %
Chromium, Cr	0.80 %	0.80 %
Cobalt, Co	0.60 - 1.0 %	0.60 - 1.0 %
Copper, Cu	>= 98.5 %	>= 98.5 %

References for this datasheet.

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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MC81400b1 / 11858

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