High-Leaded Tin Bronze, UNS C93800, Copper Casting Alloy, Centrifugally Cast

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High-Leaded Tin Bronze, UNS C93800, Copper Casting Alloy, Centrifugally Cast
Categories:	Metal; Nonferrous Metal; Copper Alloy; Bronze; Copper Casting Alloy
Material Notes:	Casting methods recommended for this alloy: Centrifugal, Continuous, Permanent Mold, and Sand. Applications: Bearings for general service and moderate pressures, pump impellers and bodies for use in acid mine water. Classified under: High-leaded tin bronzes. ASTM B66; ASTM B584; formerly ASTM B144-3D Typical data for chilled centrifugally cast test bars. Alloy does not respond to heat treating
Key Words:	High lead tin bronze, ASTM B66, ASTM B584, ASTM B144-3D
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Physical Properties	Original Value	Comments

Density	9.25 g/cc

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	230 MPa
Tensile Strength, Yield	140 MPa @Strain 0.5 %
Elongation at Break	12 %	in 50 mm
Tensile Modulus	72.4 GPa	sand cast
	10500 ksi
Compressive Strength	130 MPa	at permanent set of 0.1%
Machinability	80 %	UNS C36000 (free-cutting brass) = 100%

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.00001599 ohm-cm @Temperature 20.0 °C
Magnetic Permeability	1.0

Thermal Properties	Original Value	Comments
CTE, linear	18.5 µm/m-°C @Temperature 20.0 - 205 °C
Specific Heat Capacity	0.376 J/g-°C
Thermal Conductivity	52.0 W/m-K @Temperature 20.0 °C
Melting Point	855 - 945 °C
Solidus	855 °C
Liquidus	945 °C
Shrinkage	1.1 %	Patternmaker's Shrinkage (1/8 in./ft.)

Processing Properties	Original Value	Comments
Annealing Temperature	260 °C	Stress-Relieving Temperature

Component Elements Properties	Original Value	Comments
Antimony, Sb	<= 0.70 %
Copper, Cu	75 - 79 %
Iron, Fe	<= 0.15 %
Lead, Pb	13 - 16 %
Nickel, Ni	<= 0.70 %
Phosphorus, P	<= 0.050 %
Silicon, Si	<= 0.0030 %
Sulfur, S	<= 0.080 %
Tin, Sn	6.3 - 7.5 %
Zinc, Zn	<= 0.70 %

References for this datasheet.

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MC93800b2 / 11951

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