Leaded High-Strength Yellow Brass, UNS C86400, Copper Casting Alloy

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Leaded High-Strength Yellow Brass, UNS C86400, Copper Casting Alloy
Categories:	Metal; Nonferrous Metal; Copper Alloy; Copper Casting Alloy
Material Notes:	Casting methods recommended for this alloy: Centrifugal, Die, Permanent Mold, Plaster, and Sand. Applications: Free machining manganese bronze valve stems, marine fittings, lever arms, brackets, light-duty gears. Classified under: Manganese and leaded manganese bronze alloys. ASTM B584; formerly ASTM B147-7A, ASTM B132-A As cast values below are for sand casting. Alloy does not respond to heat treating
Key Words:	Leaded Manganese Bronze, ASTM B584; ASTM B147-7A, ASTM B132-A
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Physical Properties	Original Value	Comments

Density	8.32 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	105
Tensile Strength, Ultimate	450 MPa
Tensile Strength, Yield	170 MPa
Elongation at Break	20 %	in 50 mm
Modulus of Elasticity	96.0 GPa
Compressive Strength	150 MPa	at permanent set of 0.1%
	600 MPa	at permanent set of 10%
Machinability	60 %	UNS C36000 (free-cutting brass) = 100%
Izod Impact	40.0 J
Charpy Impact	34.0 J	V-notch

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000078368 ohm-cm @Temperature 20.0 °C	22% IACS

Thermal Properties	Original Value	Comments
CTE, linear	20.0 µm/m-°C @Temperature 21.0 - 204 °C
Specific Heat Capacity	0.376 J/g-°C
Thermal Conductivity	88.0 W/m-K @Temperature 20.0 °C
Melting Point	860 - 880 °C
Solidus	860 °C
Liquidus	880 °C

Processing Properties	Original Value	Comments
Annealing Temperature	260 °C
Casting Temperature	955 - 1040 °C	Heavy castings
	1040 - 1120 °C	Light castings

Component Elements Properties	Original Value	Comments
Aluminum, Al	<= 1.5 %
Copper, Cu	56 - 62 %
Iron, Fe	<= 2.0 %
Lead, Pb	0.50 - 1.5 %
Manganese, Mn	<= 1.5 %
Nickel, Ni	<= 1.0 %
Tin, Sn	<= 1.5 %
Zinc, Zn	37 %

References for this datasheet.

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MC86400b1 / 11915

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