Leaded Nickel Bronze, UNS C97800, Copper Casting Alloy

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Leaded Nickel Bronze, UNS C97800, Copper Casting Alloy
Categories:	Metal; Nonferrous Metal; Copper Alloy; Copper Casting Alloy
Material Notes:	Casting methods recommended for this alloy: Investment, Permanent Mold, and Sand. Applications: Ornamental and sanitary castings, valves and valve seats, musical instrument components. Classified under: Nickel silvers. ASTM B584; formerly ASTM B149-11B Typical data for sand-cast test bars. Alloy does not respond to heat treating. Casting shrinkage allowance is 1.6%
Key Words:	Leaded nickel silver, ASTM B584, ASTM B149-11B
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Physical Properties	Metric	English	Comments

Density	8.86 g/cc	0.320 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	130	130	3000 kg
Tensile Strength, Ultimate	380 MPa	55100 psi
Tensile Strength, Yield	205 MPa @Strain 0.5 %	29700 psi @Strain 0.5 %
Elongation at Break	15 %	15 %	in 50 mm
Modulus of Elasticity	130 GPa	18900 ksi
Machinability	60 %	60 %	UNS C36000 (free-cutting brass) = 100%

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00003831 ohm-cm @Temperature 20.0 °C	0.00003831 ohm-cm @Temperature 68.0 °F	4.5% IACS, as-cast tempers

Thermal Properties	Metric	English	Comments
CTE, linear	17.5 µm/m-°C @Temperature 20.0 - 260 °C	9.72 µin/in-°F @Temperature 68.0 - 500 °F
Specific Heat Capacity	0.375 J/g-°C	0.0896 BTU/lb-°F
Thermal Conductivity	25.4 W/m-K @Temperature 20.0 °C	176 BTU-in/hr-ft²-°F @Temperature 68.0 °F
Melting Point	1140 - 1180 °C	2080 - 2160 °F
Solidus	1140 °C	2080 °F
Liquidus	1180 °C	2160 °F
Shrinkage	1.6 %	1.6 %	Patternmaker's Shrinkage (3/16 in./ft.)

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

Component Elements Properties	Metric	English	Comments
Aluminum, Al	<= 0.0050 %	<= 0.0050 %
Antimony, Sb	<= 0.20 %	<= 0.20 %
Copper, Cu	64 - 67 %	64 - 67 %
Iron, Fe	<= 1.5 %	<= 1.5 %
Lead, Pb	1.0 - 2.5 %	1.0 - 2.5 %
Manganese, Mn	<= 1.0 %	<= 1.0 %
Nickel, Ni	24 - 27 %	24 - 27 %
Phosphorus, P	<= 0.050 %	<= 0.050 %
Silicon, Si	<= 0.15 %	<= 0.15 %
Sulfur, S	<= 0.080 %	<= 0.080 %
Tin, Sn	4.0 - 5.5 %	4.0 - 5.5 %
Zinc, Zn	1.0 - 4.0 %	1.0 - 4.0 %

References for this datasheet.

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MC97800b1 / 11978

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