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Master Bond adhesives

Beryllium-Copper Casting Alloy 275C, UNS C82800, TF00 Temper
Categories: Metal; Nonferrous Metal; Copper Alloy; Copper Casting Alloy
Material Notes:

Casting methods recommended for this alloy: Centrifugal, Investment, Permanent Mold, Plaster, and Sand.

Applications: Bearings and molds for plastic parts.

Test specimen: TF00 temper, solution treated at 790-800°C, aged 3 hours at 3
Key Words: BeCu; beryllium copper 275C, CA 828, FED QQ-C-390, MIL-T-16243, MIL-C-19464 (Class IV), ICI-Cu-2-10789
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Physical PropertiesMetricEnglishComments
Density 8.09 g/cc0.292 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell A  30
@Temperature 500 °C		30
@Temperature 932 °F		hot hardness
 60
@Temperature 400 °C		60
@Temperature 752 °F		hot hardness
 70
@Temperature 300 °C		70
@Temperature 572 °F		hot hardness
 73
@Temperature 200 °C		73
@Temperature 392 °F		hot hardness
 74
@Temperature 30.0 °C		74
@Temperature 86.0 °F		hot hardness
 74
@Temperature 100 °C		74
@Temperature 212 °F		hot hardness
Hardness, Rockwell C 4646
Tensile Strength, Ultimate 1140 MPa165000 psi
 565 MPa
@Temperature 425 °C		81900 psi
@Temperature 797 °F
 595 MPa
@Temperature 400 °C		86300 psi
@Temperature 752 °F
 970 MPa
@Temperature 300 °C		141000 psi
@Temperature 572 °F
 1220 MPa
@Temperature 200 °C		177000 psi
@Temperature 392 °F
 1275 MPa
@Temperature 20.0 °C		184900 psi
@Temperature 68.0 °F
 1280 MPa
@Temperature 100 °C		186000 psi
@Temperature 212 °F
Tensile Strength, Yield 1070 MPa
@Strain 0.2 %		155000 psi
@Strain 0.2 %
Elongation at Break 1.0 %1.0 %In 50 mm
 0.60 %
@Temperature 300 °C		0.60 %
@Temperature 572 °F
 1.1 %
@Temperature 200 °C		1.1 %
@Temperature 392 °F
 1.4 %
@Temperature 100 °C		1.4 %
@Temperature 212 °F
 1.6 %
@Temperature 0.000 °C		1.6 %
@Temperature 32.0 °F
 2.3 %
@Temperature 400 °C		2.3 %
@Temperature 752 °F
 2.8 %
@Temperature 460 °C		2.8 %
@Temperature 860 °F
Modulus of Elasticity 133 GPa19300 ksi
Poissons Ratio 0.300.30
Machinability 10 - 20 %10 - 20 %UNS C36000 (free-cutting brass) = 100%
Shear Modulus 51.0 GPa7400 ksi
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.0000958 ohm-cm
@Temperature 20.0 °C		0.0000958 ohm-cm
@Temperature 68.0 °F
 
Thermal PropertiesMetricEnglishComments
CTE, linear 17.0 µm/m-°C
@Temperature 20.0 - 200 °C		9.44 µin/in-°F
@Temperature 68.0 - 392 °F
Specific Heat Capacity 0.420 J/g-°C0.100 BTU/lb-°F
Thermal Conductivity 95.0 W/m-K
@Temperature 20.0 °C		659 BTU-in/hr-ft²-°F
@Temperature 68.0 °F
Melting Point 855 °C1570 °FIncipient
 860 - 930 °C1580 - 1710 °F
Solidus 835 °C1540 °F
Liquidus 930 °C1710 °F
Shrinkage 1.56 %1.56 %Patternmaker's Shrinkage (3/16 in./ft.)
 
Processing PropertiesMetricEnglishComments
Solution Temperature 790 - 800 °C1450 - 1470 °F
Aging Temperature 345 °C653 °F
Casting Temperature 965 - 1040 °C1770 - 1900 °FHeavy castings
 1040 - 1150 °C1900 - 2100 °FLight castings
 
Component Elements PropertiesMetricEnglishComments
Aluminum, Al <= 0.15 %<= 0.15 %
Beryllium, Be 2.5 - 2.75 %2.5 - 2.75 %
Chromium, Cr <= 0.10 %<= 0.10 %
Cobalt, Co 0.37 - 0.70 %0.37 - 0.70 %
Copper, Cu >= 94.8 %>= 94.8 %
Iron, Fe <= 0.25 %<= 0.25 %
Lead, Pb <= 0.020 %<= 0.020 %
Nickel, Ni <= 0.20 %<= 0.20 %
Silicon, Si 0.20 - 0.35 %0.20 - 0.35 %
Tin, Sn <= 0.10 %<= 0.10 %
Zinc, Zn <= 0.10 %<= 0.10 %

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MC82800b5 / 11898

Rulon Bearings




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