Tin Bronze UNS C90300, Copper Casting Alloy

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Tin Bronze UNS C90300, Copper Casting Alloy
Categories:	Metal; Nonferrous Metal; Copper Alloy; Bronze; Copper Casting Alloy
Material Notes:	Casting methods recommended for this alloy: Centrifugal, Continuous, Investment, Plaster, and Sand. Property data reported here is for sand castings. Applications: Bearings and bushings, pump impellers, position rings, valve components, seal rings, steam fittings, gears . Classified under: Tin bronzes. ASTM B584; formerly ASTM B143-1B Alloy does not respond to heat treating. Casting shrinkage allowance is 1.5 - 1.8%
Key Words:	Tin Bronze, Modified G Bronze, ASTM B584; ASTM B143-1B
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Physical Properties	Metric	English	Comments

Density	8.75 g/cc	0.316 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	70	70
Tensile Strength, Ultimate	310 MPa	45000 psi
Tensile Strength, Yield	145 MPa	21000 psi
Elongation at Break	30 %	30 %	In 50 mm
Modulus of Elasticity	97.0 GPa	14100 ksi
Machinability	30 %	30 %	UNS C36000 (free-cutting brass) = 100%
Charpy Impact	19.0 J	14.0 ft-lb	V-notch

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000144 ohm-cm @Temperature 20.0 °C	0.0000144 ohm-cm @Temperature 68.0 °F	12% IACS
Magnetic Permeability	1.0	1.0

Thermal Properties	Metric	English	Comments
CTE, linear	18.0 µm/m-°C @Temperature 20.0 - 177 °C	10.0 µin/in-°F @Temperature 68.0 - 351 °F
Specific Heat Capacity	0.376 J/g-°C	0.0899 BTU/lb-°F
Thermal Conductivity	74.0 W/m-K @Temperature 20.0 °C	514 BTU-in/hr-ft²-°F @Temperature 68.0 °F
Melting Point	854 - 1000 °C	1570 - 1830 °F
Solidus	854 °C	1570 °F
Liquidus	1000 °C	1830 °F

Component Elements Properties	Metric	English	Comments
Aluminum, Al	<= 0.0050 %	<= 0.0050 %
Antimony, Sb	<= 0.20 %	<= 0.20 %
Copper, Cu	86 - 89 %	86 - 89 %
Iron, Fe	<= 0.15 %	<= 0.15 %
Lead, Pb	<= 0.30 %	<= 0.30 %
Nickel, Ni	<= 1.0 %	<= 1.0 %
Phosphorus, P	<= 0.050 %	<= 0.050 %
Silicon, Si	<= 0.0050 %	<= 0.0050 %
Sulfur, S	<= 0.050 %	<= 0.050 %
Tin, Sn	7.5 - 9.0 %	7.5 - 9.0 %
Zinc, Zn	3.0 - 5.0 %	3.0 - 5.0 %

References for this datasheet.

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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MC90300b1 / 11927

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