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High-Strength Yellow Brass, UNS C86500, 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: Machinery parts requiring strength and toughness, lever arm, valve stems, gears.

Classified under: Manganese and leaded manganese bronze alloys. ASTM B584; formerly ASTM B147-8A

As cast values below are for sand casting. Alloy does not respond to heat treating. Casting shrinkage allowance is 1.9%

Key Words: Manganese Bronze, ASTM B584; ASTM B147-8A
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Physical PropertiesOriginal ValueComments
Density 8.30 g/cc
 
Mechanical PropertiesOriginal ValueComments
Hardness, Brinell 130
 80
@Load 500 kg,
Temperature 230 °C
 88
@Load 500 kg,
Temperature 170 °C
 97
@Load 500 kg,
Temperature -35.0 °C
 98
@Load 500 kg,
Temperature 20.0 °C
Tensile Strength, Ultimate 490 MPa
 315 MPa
@Temperature 225 °C
 370 MPa
@Temperature 175 °C
 485 MPa
@Temperature 20.0 °C
 500 MPa
@Temperature -35.0 °C
Tensile Strength, Yield 195 MPa
 175 MPa
@Strain 0.2 %,
Temperature 20.0 °C
 180 MPa
@Strain 0.2 %,
Temperature 175 °C
 180 MPa
@Strain 0.2 %,
Temperature 230 °C
 185 MPa
@Strain 0.2 %,
Temperature -40.0 °C
 195 MPa
@Strain 0.5 %,
Temperature 20.0 °C
 195 MPa
@Strain 0.5 %,
Temperature 175 °C
 195 MPa
@Strain 0.5 %,
Temperature 230 °C
 200 MPa
@Strain 0.5 %,
Temperature -40.0 °C
Elongation at Break 30 %in 50 mm
 31 %
@Temperature -35.0 °C
 39 %
@Temperature 20.0 °C
 54 %
@Temperature 225 °C
 59 %
@Temperature 175 °C
Reduction of Area 26 %
@Temperature -35.0 °C
 39 %
@Temperature 20.0 °C
 62 %
@Temperature 225 °C
 69 %
@Temperature 175 °C
Creep Strength 12.0 MPa
@Temperature 230 °C,
Time 3.60e+7 sec
for 0.1% creep
 43.0 MPa
@Temperature 175 °C,
Time 3.60e+7 sec
for 0.1% creep
 190 MPa
@Temperature 120 °C,
Time 3.60e+7 sec
for 0.1% creep
Rupture Strength 85.0 MPa
@Temperature 230 °C,
Time 2.88e+6 sec
 250 MPa
@Temperature 230 °C,
Time 32400 sec
 265 MPa
@Temperature 175 °C,
Time 2.88e+6 sec
 300 MPa
@Temperature 175 °C,
Time 1.08e+6 sec
 380 MPa
@Temperature 175 °C,
Time 140000 sec
 420 MPa
@Temperature 120 °C,
Time 1.01e+6 sec
 440 MPa
@Temperature 175 °C,
Time 18000 sec
 500 MPa
@Temperature 120 °C,
Time 27000 sec
Modulus of Elasticity 105 GPa
 92.0 GPa
@Temperature 225 °C
 99.0 GPa
@Temperature 170 °C
 101 GPa
@Temperature -35.0 °C
 106 GPa
@Temperature 20.0 °C
Compressive Strength 165 MPaat permanent set of 0.1%
 240 MPaat permanent set of 1%
 545 MPaat permanent set of 10%
 150 MPa
@Temperature 25.0 °C
0.1% set
 170 MPa
@Temperature 175 °C
0.1% set
 170 MPa
@Temperature -35.0 °C
0.1% set
 175 MPa
@Temperature 230 °C
0.1% set
 205 MPa
@Temperature 230 °C
1% set
 245 MPa
@Temperature 25.0 °C
1% set
 245 MPa
@Temperature 175 °C
1% set
 255 MPa
@Temperature -35.0 °C
1% set
 400 MPa
@Temperature 230 °C
10% set
 430 MPa
@Temperature 175 °C
10% set
 550 MPa
@Temperature 25.0 °C
10% set
 605 MPa
@Temperature -35.0 °C
10% set
Fatigue Strength 130 - 150 MPa
@# of Cycles 1.00e+8
 145 MPa
@# of Cycles 1.00e+8
 140 - 160 MPa
@# of Cycles 1.00e+7
 170 - 200 MPa
@# of Cycles 1.00e+6
 240 - 265 MPa
@# of Cycles 100000
Machinability 26 %UNS C36000 (free-cutting brass) = 100%
Charpy Impact 42.0 J
 27.0 J
@Temperature 230 °C
 33.0 J
@Temperature 175 °C
 43.0 J
@Temperature 20.0 °C
 47.0 J
@Temperature -35.0 °C
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.00000840 ohm-cm
@Temperature 20.0 °C
 0.00000841 ohm-cm
@Temperature 20.0 °C
20.5% IACS
 0.00000890 ohm-cm
@Temperature 65.0 °C
 0.00000930 ohm-cm
@Temperature 90.0 °C
 0.00000970 ohm-cm
@Temperature 120 °C
 0.0000102 ohm-cm
@Temperature 145 °C
 0.0000106 ohm-cm
@Temperature 175 °C
 0.0000109 ohm-cm
@Temperature 205 °C
 0.0000113 ohm-cm
@Temperature 235 °C
Magnetic Permeability 1.0916 kA/m field strength
 
Thermal PropertiesOriginal ValueComments
CTE, linear 18.0 µm/m-°C
@Temperature 105 °C
 18.4 µm/m-°C
@Temperature 130 °C
 18.8 µm/m-°C
@Temperature 160 °C
 19.2 µm/m-°C
@Temperature 185 °C
 19.6 µm/m-°C
@Temperature 215 °C
 20.0 µm/m-°C
@Temperature 240 °C
 20.4 µm/m-°C
@Temperature 275 °C
Specific Heat Capacity 0.373 J/g-°C
Thermal Conductivity 87.0 W/m-K
@Temperature 20.0 °C
 87.0 W/m-K
@Temperature 20.0 °C
 92.0 W/m-K
@Temperature 40.0 °C
 95.0 W/m-K
@Temperature 70.0 °C
 98.0 W/m-K
@Temperature 95.0 °C
 102 W/m-K
@Temperature 125 °C
 105 W/m-K
@Temperature 140 °C
 106 W/m-K
@Temperature 175 °C
 109 W/m-K
@Temperature 210 °C
 112 W/m-K
@Temperature 235 °C
Melting Point 862 - 880 °C
Solidus 862 °C
Liquidus 880 °C
Shrinkage 1.65 - 2.15 %
@Treatment Temp. >=905 °C
Patternmaker's Shrinkage; pouring temp of 905°C
 
Processing PropertiesOriginal ValueComments
Annealing Temperature 260 °C
 
Component Elements PropertiesOriginal ValueComments
Aluminum, Al 0.50 - 1.5 %
Copper, Cu 55 - 60 %
Iron, Fe 0.40 - 2.0 %
Lead, Pb <= 0.40 %
Manganese, Mn <= 1.5 %
Nickel, Ni <= 1.0 %
Tin, Sn <= 1.0 %
Zinc, Zn 39 %

References for this datasheet.

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