High-Leaded Tin Bronze, UNS C93900, Copper Casting Alloy

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High-Leaded Tin Bronze, UNS C93900, Copper Casting Alloy
Categories:	Metal; Nonferrous Metal; Copper Alloy; Copper Casting Alloy
Material Notes:	Casting methods recommended for this alloy: Continuous. Applications: Continuous castings only. Bearings for general service, pump bodies and impellers for mine waters. Classified under: High-leaded tin bronzes Alloy does not respond to heat treating.
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Physical Properties	Metric	English	Comments

Density	9.25 g/cc	0.334 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	63	63	Typically
Tensile Strength, Ultimate	220 MPa	31900 psi
Tensile Strength, Yield	150 MPa @Strain 0.5 %	21800 psi @Strain 0.5 %
Elongation at Break	7.0 %	7.0 %	in 50 mm
Modulus of Elasticity	76.0 GPa	11000 ksi
Machinability	80 %	80 %	UNS C36000 (free-cutting brass) = 100%

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00001599 ohm-cm @Temperature 20.0 °C	0.00001599 ohm-cm @Temperature 68.0 °F
Magnetic Permeability	1.0	1.0

Thermal Properties	Metric	English	Comments
CTE, linear	18.5 µm/m-°C @Temperature 20.0 - 204 °C	10.3 µin/in-°F @Temperature 68.0 - 399 °F
Specific Heat Capacity	0.376 J/g-°C	0.0899 BTU/lb-°F
Thermal Conductivity	52.0 W/m-K @Temperature 20.0 °C	361 BTU-in/hr-ft²-°F @Temperature 68.0 °F
Melting Point	315 °C	599 °F	Incipient
	854 - 943 °C	1570 - 1730 °F
Solidus	854 °C	1570 °F
Liquidus	943 °C	1730 °F
Shrinkage	1.1 %	1.1 %	Patternmaker's Shrinkage (1/8 in./ft.)

Component Elements Properties	Metric	English	Comments
Copper, Cu	76.5 - 79.5 %	76.5 - 79.5 %
Iron, Fe	<= 0.40 %	<= 0.40 %
Lead, Pb	14 - 18 %	14 - 18 %
Nickel, Ni	<= 0.80 %	<= 0.80 %
Phosphorus, P	<= 0.050 %	<= 0.050 %
Tin, Sn	5.0 - 7.0 %	5.0 - 7.0 %
Zinc, Zn	<= 1.5 %	<= 1.5 %

References for this datasheet.

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MC93900b1 / 11952

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