Tin Bronze, UNS C90700, Sand castings

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Tin Bronze, UNS C90700, Sand castings
Categories:	Metal; Nonferrous Metal; Copper Alloy; Bronze; Copper Casting Alloy
Material Notes:	Casting methods recommended for this alloy: Centrifugal, Continuous, Investment, Permanent Mold, and Sand. Applications: Gears, bearing bushings.
Key Words:	Gear Bronze
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Physical Properties	Original Value	Comments

Density	8.77 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	80
Tensile Strength, Ultimate	305 MPa
Tensile Strength, Yield	150 MPa
Elongation at Break	20 %
Modulus of Elasticity	105 GPa
Fatigue Strength	170 MPa @# of Cycles 1.00e+8	rotating beam, casting method not reported
Machinability	20 %	UNS C36000 (free-cutting brass) = 100%

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000150 ohm-cm
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	832 - 1000 °C
Solidus	832 °C
Liquidus	1000 °C

Component Elements Properties	Original Value	Comments
Aluminum, Al	<= 0.0050 %
Copper, Cu	88 - 90 %
Iron, Fe	<= 0.15 %
Lead, Pb	<= 0.30 %
Phosphorus, P	0.10 - 0.30 %
Tin, Sn	10 - 12 %
Zinc, Zn	<= 0.50 %

References for this datasheet.

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MC90700b1 / 11929

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