Contact Metal, UNS C83300, Copper Casting Alloy

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Contact Metal, UNS C83300, Copper Casting Alloy
Categories:	Metal; Nonferrous Metal; Copper Alloy; Copper Casting Alloy
Material Notes:	Casting methods recommended for this alloy: Sand. Applications: Terminal ends for electrical cables. Classified under: Red Brasses and leaded red brasses Data typical for as-sand-cast separately cast test bars (M01 temper). Alloy does not respond to heat treating
Key Words:	CA 833, contact metal, Ingot code no. 131
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Physical Properties	Metric	English	Comments

Density	8.80 g/cc	0.318 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	35	35	500 kg, typical
Tensile Strength, Ultimate	220 MPa	31900 psi
Tensile Strength, Yield	70.0 MPa @Strain 0.5 %	10200 psi @Strain 0.5 %
Elongation at Break	35 %	35 %	In 50 mm
Modulus of Elasticity	105 GPa	15200 ksi
Machinability	35 %	35 %	UNS C36000 (free-cutting brass) = 100%

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.000005388 ohm-cm @Temperature 20.0 °C	0.000005388 ohm-cm @Temperature 68.0 °F

Thermal Properties	Metric	English	Comments
Specific Heat Capacity	0.380 J/g-°C	0.0908 BTU/lb-°F
Melting Point	1030 - 1060 °C	1890 - 1940 °F
Solidus	1030 °C	1890 °F
Liquidus	1060 °C	1940 °F
Shrinkage	1.6 - 2.1 %	1.6 - 2.1 %	Patternmaker's Shrinkage (3/16 to 1/4 in./ft.)

Processing Properties	Metric	English	Comments
Annealing Temperature	260 °C	500 °F	Stress-Relieving Temperature

Component Elements Properties	Metric	English	Comments
Copper, Cu	92 - 94 %	92 - 94 %
Lead, Pb	1.0 - 2.0 %	1.0 - 2.0 %
Tin, Sn	1.0 - 2.0 %	1.0 - 2.0 %
Zinc, Zn	2.0 - 6.0 %	2.0 - 6.0 %

References for this datasheet.

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MC83300b1 / 11899

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