Manganese Bronze, UNS C86100, Copper Casting Alloy

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Manganese Bronze, UNS C86100, Copper Casting Alloy
Categories:	Metal; Nonferrous Metal; Copper Alloy; Copper Casting Alloy
Material Notes:	Casting methods recommended for this alloy: Centrifugal, Investment, Plaster, and Sand. Applications: Marine castings, gears, gun mounts, bushings and bearings marine racing propellers. Classified under: Manganese and leaded manganese bronze alloys As cast values below are for sand casting. Alloy does not respond to heat treating
Key Words:	Manganese bronze, high strength yellow brass, CA 861, SAE J462, SAE 430A (renumbered), FED QQ-C-390, FED QQ-C-523, MIL-C-15345 (Alloy 5), MIL-C-22087 (composition 7), MIL-C-22229 (composition 10), Ingot code no. 423
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Physical Properties	Original Value	Comments

Density	7.90 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	180
Tensile Strength, Ultimate	655 MPa
Tensile Strength, Yield	330 MPa
Elongation at Break	20 %	In 50 mm
Modulus of Elasticity	105 GPa
Compressive Strength	345 MPa	at permanent set of 0.1%
Machinability	30 %	UNS C36000 (free-cutting brass) = 100%
Izod Impact	16.0 J

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.00002298 ohm-cm @Temperature 20.0 °C	7.5% IACS
Magnetic Permeability	1.24	16 kA/m field strength

Thermal Properties	Original Value	Comments
CTE, linear	22.0 µm/m-°C @Temperature 20.0 - 260 °C
Specific Heat Capacity	0.376 J/g-°C
Thermal Conductivity	35.0 W/m-K @Temperature 20.0 °C
Melting Point	900 - 940 °C
Solidus	900 °C
Liquidus	940 °C

Processing Properties	Original Value	Comments
Annealing Temperature	260 °C

Component Elements Properties	Original Value	Comments
Aluminum, Al	4.5 - 5.5 %
Copper, Cu	66 - 68 %
Iron, Fe	2.0 - 4.0 %
Lead, Pb	<= 0.20 %
Manganese, Mn	2.5 - 5.0 %
Nickel, Ni	<= 1.0 %
Tin, Sn	<= 0.20 %
Zinc, Zn	21 %

References for this datasheet.

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MC86100b1 / 11912

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