High-Leaded Tin Bronze, UNS C93500, Copper Casting Alloy

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High-Leaded Tin Bronze, UNS C93500, Copper Casting Alloy
Categories:	Metal; Nonferrous Metal; Copper Alloy; Copper Casting Alloy
Material Notes:	Casting methods recommended for this alloy: Centrifugal, Continuous, and Sand. Applications: Small bearings and bushings, bronze backing for babbitt-lined automotive bearings. Classified under: High-leaded tin bronzes. ASTM B584; formerly ASTM B144-3C Typical data for sand-cast test bars. Alloy does not respond to heat treating
Key Words:	High lead tin bronze, ASTM B584, ASTM B144-3C
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Physical Properties	Original Value	Comments

Density	8.87 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	60
Tensile Strength, Ultimate	220 MPa
Tensile Strength, Yield	110 MPa @Strain 0.5 %
Elongation at Break	20 %	in 50 mm
Modulus of Elasticity	100 GPa
Compressive Strength	90.0 MPa	at permanent set of 0.1%
Machinability	70 %	UNS C36000 (free-cutting brass) = 100%
Izod Impact	11.0 J
Charpy Impact	11.0 J	V-notch

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.000011494 ohm-cm @Temperature 20.0 °C
Magnetic Permeability	1.0

Thermal Properties	Original Value	Comments
CTE, linear	18.0 µm/m-°C @Temperature 20.0 - 200 °C
Specific Heat Capacity	0.376 J/g-°C
Thermal Conductivity	71.0 W/m-K @Temperature 20.0 °C
Melting Point	315 °C	Incipient
	855 - 1000 °C
Solidus	855 °C
Liquidus	1000 °C
Shrinkage	1.6 %	Patternmaker's Shrinkage (3/16 in./ft.)

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

Component Elements Properties	Original Value	Comments
Antimony, Sb	<= 0.30 %
Copper, Cu	83 - 86 %
Iron, Fe	<= 0.20 %
Lead, Pb	8.0 - 10 %
Nickel, Ni	<= 0.50 %
Phosphorus, P	<= 0.020 %
Silicon, Si	<= 0.0030 %
Sulfur, S	<= 0.080 %
Tin, Sn	4.5 - 6.0 %
Zinc, Zn	<= 2.0 %

References for this datasheet.

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MC93500b1 / 11947

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