Nickel Gear Bronze, UNS C91700, Sand Cast

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Nickel Gear Bronze, UNS C91700, Sand Cast
Categories:	Metal; Nonferrous Metal; Copper Alloy; Copper Casting Alloy
Material Notes:	Property data for as-cast specimens. Casting methods recommended for this alloy: Centrifugal, Continuous, Permanent Mold, and Sand. Applications: Worm gears, steel mill nuts Classified under: Tin bronze
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Physical Properties	Original Value	Comments

Density	8.75 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	85
Tensile Strength, Ultimate	305 MPa
Tensile Strength, Yield	150 MPa
Elongation at Break	16 %	in 50 mm
Modulus of Elasticity	105 GPa
Machinability	20 %	UNS C36000 (free-cutting brass) = 100%

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.000017241 ohm-cm @Temperature 20.0 °C
Magnetic Permeability	1.0

Thermal Properties	Original Value	Comments
CTE, linear	16.2 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	850 - 1015 °C
Solidus	850 °C
Liquidus	1015 °C
Shrinkage	1.6 %	Patternmaker's Shrinkage (3/16 in./ft.)

Component Elements Properties	Original Value	Comments
Copper, Cu	85 - 87.5 %
Lead, Pb	<= 0.25 %
Nickel, Ni	1.3 - 2.0 %
Phosphorus, P	<= 0.30 %
Tin, Sn	11.3 - 12.5 %

References for this datasheet.

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MC91700b1 / 11936

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