Nickel-Manganese Bronze, UNS C86800, Copper Casting Alloy

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Nickel-Manganese Bronze, UNS C86800, Copper Casting Alloy
Categories:	Metal; Nonferrous Metal; Copper Alloy; Copper Casting Alloy
Material Notes:	Casting methods recommended for this alloy: Sand. Applications: Marine fittings, marine propellers. Classified under: Manganese and leaded manganese bronze alloys Typical data for as-sand-cast separately cast test bars (M01 temper). Alloy does not respond to heat treating
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Physical Properties	Metric	English	Comments

Density	8.00 g/cc	0.289 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	80	80	Typically, 3000 kg
Tensile Strength, Ultimate	565 MPa	81900 psi
Tensile Strength, Yield	260 MPa @Strain 0.5 %	37700 psi @Strain 0.5 %
Elongation at Break	22 %	22 %	In 50 mm
Modulus of Elasticity	105 GPa	15200 ksi
Machinability	30 %	30 %	UNS C36000 (free-cutting brass) = 100%

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.000019156 ohm-cm @Temperature 20.0 °C	0.000019156 ohm-cm @Temperature 68.0 °F

Thermal Properties	Metric	English	Comments
Specific Heat Capacity	0.376 J/g-°C	0.0899 BTU/lb-°F
Melting Point	880 - 900 °C	1620 - 1650 °F
Solidus	880 °C	1620 °F
Liquidus	900 °C	1650 °F
Shrinkage	2.1 %	2.1 %	Patternmaker's Shrinkage (1/4 in./ft.)

Processing Properties	Metric	English	Comments
Annealing Temperature	260 °C	500 °F	Stress-Relieving Temperature

Component Elements Properties	Metric	English	Comments
Aluminum, Al	<= 2.0 %	<= 2.0 %
Copper, Cu	53.5 - 57 %	53.5 - 57 %
Iron, Fe	1.0 - 2.5 %	1.0 - 2.5 %
Lead, Pb	<= 0.20 %	<= 0.20 %
Manganese, Mn	2.5 - 4.0 %	2.5 - 4.0 %
Nickel, Ni	2.5 - 4.0 %	2.5 - 4.0 %
Tin, Sn	<= 1.0 %	<= 1.0 %
Zinc, Zn	37 %	37 %

References for this datasheet.

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MC86800b1 / 11918

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