Manganese-Aluminum Bronze, UNS C95700, Copper Casting Alloy

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Manganese-Aluminum Bronze, UNS C95700, Copper Casting Alloy
Categories:	Metal; Nonferrous Metal; Copper Alloy; Copper Casting Alloy
Material Notes:	Casting methods recommended for this alloy: Centrifugal, Continuous, Permanent Mold, Plaster, and Sand. Applications: Propellers, impellers, stator clamp segments, safety tools, welding rods, valves, pump castings. Classified under: Aluminum bronzes Data typical for sand-cast test bars. Alloy does not respond to heat treating
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Physical Properties	Original Value	Comments

Density	7.53 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	180	3000 kg
Hardness, Rockwell B	85 - 90	as cast or cast and annealed
Tensile Strength, Ultimate	620 MPa
Tensile Strength, Yield	275 MPa
Elongation at Break	20 %	in 50 mm
Reduction of Area	24 %
Creep Strength	31.0 MPa @Temperature 290 °C	for 0.00001%/h
	66.0 MPa @Temperature 205 °C	for 0.00001%/h
	39.0 MPa @Temperature 370 °C, Time 3.60e+8 sec	for 0.00001%/h
	232 MPa @Temperature 260 °C, Time 3.60e+8 sec	for 0.00001%/h
	470 MPa @Temperature 205 °C, Time 3.60e+8 sec	for 0.00001%/h
Modulus of Elasticity	125 GPa
Compressive Strength	1035 MPa	as cast, at permanent set of 0.1%
Poissons Ratio	0.326
Fatigue Strength	231 MPa @# of Cycles 1.00e+8	Reverse Bending
Machinability	50 %	UNS C36000 (free-cutting brass) = 100%
Shear Modulus	44.0 GPa
Izod Impact	27.0 J @Temperature 20.0 °C

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000556 ohm-cm
Magnetic Permeability	1.03	Demagnetized (annealed, fast cooled)
	2.2 - 15	Magnetic condition (as-cast, slow cooled)

Thermal Properties	Original Value	Comments
CTE, linear	17.6 µm/m-°C @Temperature 20.0 - 300 °C
Specific Heat Capacity	0.400 J/g-°C
Thermal Conductivity	12.1 W/m-K @Temperature 20.0 °C
Melting Point	950 - 990 °C
Solidus	950 °C
Liquidus	990 °C
Shrinkage	1.6 %	Patternmaker's Shrinkage (3/16 in./ft.)

Processing Properties	Original Value	Comments
Annealing Temperature	620 °C

Component Elements Properties	Original Value	Comments
Aluminum, Al	7.0 - 8.5 %
Copper, Cu	75 %
Iron, Fe	2.0 - 4.0 %
Lead, Pb	<= 0.030 %
Manganese, Mn	11 - 14 %
Nickel, Ni	1.5 - 3.0 %
Other, total	<= 0.50 %
Silicon, Si	<= 0.10 %

References for this datasheet.

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MC95700b1 / 11967

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