UNS C82800 (Alloy 275C) Beryllium Copper
Copper Alloys
as-fabricated (no
Property Overview
Density8.7g/cm³
Elastic Modulus120GPa
Tensile Strength670MPa
Yield Strength380MPa
Brinell HardnessUnknown
Maximum Service Temperature310°C
Chemical Composition
CR
0 to 0.1%
NI
0 to 0.2%
SI
0.2 to 0.35%
CU
94.6 to 97.2%
TI
0 to 0.12%
AL
0 to 0.15%
CO
0.15 to 0.7%
BE
2.5 to 2.9%
PB
0 to 0.020%
RES.
Residuals res. | | 0 to 0.5%
RESIDUALS RES.
0 to 0.5%
SN
0 to 0.1%
ZN
0 to 0.1%
FE
0 to 0.25%
Mechanical
Elastic (Young's, Tensile) Modulus
120 GPa
Elongation at Break
20 %
Poisson's Ratio
0.33
Shear Modulus
46 GPa
Tensile Strength: Ultimate (UTS)
670 MPa
Tensile Strength: Yield (Proof)
380 MPa
Hardness
Rockwell B Hardness
85
Physical
Density
8.7 g/cm 3
Thermal
Latent Heat of Fusion
240 J/g
Maximum Temperature: Mechanical
310 °C
Melting Completion (Liquidus)
930 °C
Melting Onset (Solidus)
890 °C
Specific Heat Capacity
390 J/kg-K
Thermal Conductivity
120 W/m-K
Thermal Diffusivity
36 mm 2 /s
Thermal Expansion
17 µm/m-K
Thermal Shock Resistance
23 points
Electrical
Electrical Conductivity: Equal Volume
18 % IACS
Electrical Conductivity: Equal Weight (Specific)
19 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
110 MJ/m 3
Resilience: Unit (Modulus of Resilience)
590 kJ/m 3
Stiffness to Weight: Axial
7.8 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
21 points
Strength to Weight: Bending
20 points
Environmental
Embodied Carbon
12 kg CO 2 /kg material
Embodied Energy
190 MJ/kg
Embodied Energy
190 MJ/kg 82 x 10 3 BTU/lb
Embodied Water
310 L/kg
Embodied Water
310 L/kg 37 gal/lb
Registered Designations & Aliases
Alloy 275CC82800UNS C82800 (Alloy 275C) Beryllium Copper