Leaded Tin Bronze, UNS C92500, Copper Casting Alloy

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Leaded Tin Bronze, UNS C92500, Copper Casting Alloy
Categories:	Metal; Nonferrous Metal; Copper Alloy; Copper Casting Alloy
Material Notes:	Casting methods recommended for this alloy: Centrifugal, Continuous, Permanent Mold, and Sand. Applications: Gears, automotive synchronizer rings. Classified under: Leaded tin bronzes Data typical for sand-cast test bars. Alloy does not respond to heat treating
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Physical Properties	Metric	English	Comments

Density	8.80 g/cc	0.318 lb/in³	Estimated

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	80	80
Tensile Strength, Ultimate	305 MPa	44200 psi
Tensile Strength, Yield	140 MPa @Strain 0.5 %	20300 psi @Strain 0.5 %
Elongation at Break	20 %	20 %	in 50 mm
Modulus of Elasticity	110 GPa	16000 ksi
Machinability	30 %	30 %	UNS C36000 (free-cutting brass) = 100%

Thermal Properties	Metric	English	Comments
Specific Heat Capacity	0.376 J/g-°C	0.0899 BTU/lb-°F
Melting Point	315 °C	599 °F	Incipient
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 %
Copper, Cu	85 - 88 %	85 - 88 %
Iron, Fe	<= 0.15 %	<= 0.15 %
Lead, Pb	1.0 - 1.5 %	1.0 - 1.5 %
Nickel, Ni	0.80 - 1.5 %	0.80 - 1.5 %
Phosphorus, P	0.20 - 0.30 %	0.20 - 0.30 %
Tin, Sn	10 - 12 %	10 - 12 %
Zinc, Zn	<= 0.50 %	<= 0.50 %

References for this datasheet.

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MC92500b1 / 11940

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