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	Original Value	Comments

Density	8.81 g/cc

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

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.00000250 ohm-cm	heat treated

Thermal Properties	Original Value	Comments
CTE, linear	19.0 µm/m-°C @Temperature 20.0 - 300 °C
Specific Heat Capacity	0.389 J/g-°C
Thermal Conductivity	259 W/m-K @Temperature 20.0 °C
Melting Point	1065 - 1095 °C
Solidus	1065 °C
Liquidus	1095 °C
Shrinkage	1.96 %	Patternmaker's Shrinkage

Processing Properties	Original Value	Comments
Solution Temperature	1000 - 1010 °C
Aging Temperature	480 °C
Precipitation Temperature	900 °F @Time 108 sec	Air
Casting Temperature	1175 - 1230 °C	Heavy castings
	1200 - 1260 °C	Light castings

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

References for this datasheet.

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MC81400b1 / 11858

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