UNS C81500, Copper Casting Alloy

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UNS C81500, 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: Electrical and/or thermal conductors used as structural members where strength and hardness greater than that of UNS C8100-8110 are required. Mechanical properties typical for sand cast test bars, heat treated.
Key Words:	chromium copper, chrome copper, CA 815
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Physical Properties	Metric	English	Comments

Density	8.82 g/cc	0.319 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	105	105
Tensile Strength, Ultimate	350 MPa	50800 psi
Tensile Strength, Yield	275 MPa	39900 psi
Elongation at Break	17 %	17 %	in 50 mm
Modulus of Elasticity	115 GPa	16700 ksi
Poissons Ratio	0.32	0.32
Fatigue Strength	105 MPa @# of Cycles 1.00e+8	15200 psi @# of Cycles 1.00e+8
Machinability	20 %	20 %	UNS C36000 (free-cutting brass) = 100%
Shear Modulus	44.0 GPa	6380 ksi
Izod Impact	41.0 J	30.2 ft-lb
Charpy Impact	27.0 J	19.9 ft-lb	V-notch

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000210 ohm-cm	0.00000210 ohm-cm	Precipitation hardened
	0.00000383 ohm-cm	0.00000383 ohm-cm	Solution heat treated
Magnetic Permeability	1.0	1.0

Thermal Properties	Metric	English	Comments
CTE, linear	17.1 µm/m-°C @Temperature 20.0 - 300 °C	9.50 µin/in-°F @Temperature 68.0 - 572 °F
Specific Heat Capacity	0.376 J/g-°C	0.0899 BTU/lb-°F
Thermal Conductivity	315 W/m-K @Temperature 20.0 °C	2190 BTU-in/hr-ft²-°F @Temperature 68.0 °F
Melting Point	1075 - 1085 °C	1967 - 1985 °F
Solidus	1075 °C	1967 °F
Liquidus	1085 °C	1985 °F
Shrinkage	2.1 %	2.1 %	Patternmaker's Shrinkage (1/4 in./ft.)

Processing Properties	Metric	English	Comments
Solution Temperature	1000 - 1010 °C	1830 - 1850 °F
Aging Temperature	480 °C	896 °F

Component Elements Properties	Metric	English	Comments
Chromium, Cr	0.40 - 1.5 %	0.40 - 1.5 %
Copper, Cu	98 - 99.6 %	98 - 99.6 %
Lead, Pb	<= 0.015 %	<= 0.015 %
Other, total	<= 0.50 %	<= 0.50 %
Phosphorus, P	<= 0.040 %	<= 0.040 %

References for this datasheet.

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MC81500b1 / 11859

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