Nondezincification Alloy, UNS C99400, Copper Casting Alloy

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Nondezincification Alloy, UNS C99400, Copper Casting Alloy
Categories:	Metal; Nonferrous Metal; Copper Alloy; Copper Casting Alloy
Material Notes:	Casting methods recommended for this alloy: Centrifugal, Continuous, Investment, and Sand. Applications: Valve stems, marine and other uses requiring resistance to dezincifications and dealuminification, propeller wheels, electrical parts, mining equipment gears.
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Physical Properties	Metric	English	Comments

Density	8.30 g/cc	0.300 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	125	125	M01 temper; 3000 kg
	170	170	TF00 temper; 3000 kg
Tensile Strength, Ultimate	455 MPa	66000 psi	M01 temper
	545 MPa	79000 psi	TF00 temper
Tensile Strength, Yield	235 MPa @Strain 0.5 %	34100 psi @Strain 0.5 %	M01 temper
	370 MPa @Strain 0.5 %	53700 psi @Strain 0.5 %	TF00 temper
Elongation at Break	25 %	25 %	in 50 mm, M01 temper
Modulus of Elasticity	133 GPa	19300 ksi
Machinability	50 %	50 %	UNS C36000 (free-cutting brass) = 100%
Shear Strength	330 MPa	47900 psi	M01 temper

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000103 ohm-cm @Temperature 20.0 °C	0.0000103 ohm-cm @Temperature 68.0 °F	TF00 temper

Thermal Properties	Metric	English	Comments
Shrinkage	1.6 %	1.6 %	Patternmaker's Shrinkage (3/16 in./ft.)

Processing Properties	Metric	English	Comments
Annealing Temperature	315 °C	599 °F	Stress-Relieving Temperature; 1 h for each 25 mm of section thickness
Solution Temperature	885 °C	1630 °F	1 h for each 25 mm of section thickness
Aging Temperature	480 °C	896 °F	1 hour
Precipitation Temperature	482 °C @Time 3600 sec	900 °F @Time 1.00 hour

Component Elements Properties	Metric	English	Comments
Aluminum, Al	0.50 - 2.0 %	0.50 - 2.0 %
Copper, Cu	90.4 %	90.4 %
Iron, Fe	1.0 - 3.0 %	1.0 - 3.0 %
Lead, Pb	<= 0.25 %	<= 0.25 %
Manganese, Mn	<= 0.50 %	<= 0.50 %
Nickel, Ni	1.0 - 3.5 %	1.0 - 3.5 %
Silicon, Si	0.50 - 2.0 %	0.50 - 2.0 %
Zinc, Zn	0.50 - 5.0 %	0.50 - 5.0 %

References for this datasheet.

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MC99400b1 / 11984

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