POOSHESH STEELPERGAS

UNS C17500 (CW104C) Cobalt-Beryllium Copper

Alloy Steels

TD04 (solution heat treated and cold worked to full-hard)

Property Overview

Density8.9g/cm³
Elastic Modulus120GPa
Tensile Strength520MPa
Yield Strength470MPa
Brinell HardnessUnknown
Maximum Service Temperature220°C
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Chemical Composition

C
CuCo2Be ( CW104C ) Low alloyed copper alloy Chemical composition. Equivalents of CuCo2Be ( CW104C ). Standards.1 Mechanical Properties. Hardness%
SI
0 to 0.2%
CU
95.6 to 97.2%
AL
0 to 0.2%
CO
2.4 to 2.7%
BE
0.4 to 0.7%
RES.
Residuals res. | | 0 to 0.5%
RESIDUALS RES.
0 to 0.5%
FE
0 to 0.1%

Mechanical

Elastic (Young's, Tensile) Modulus
120 GPa
Elongation at Break
6.0 %
Fatigue Strength
210 MPa
Poisson's Ratio
0.34
Shear Modulus
45 GPa
Shear Strength
300 MPa
Tensile Strength: Ultimate (UTS)
520 MPa
Tensile Strength: Yield (Proof)
470 MPa

Hardness

Rockwell B Hardness
77

Physical

Density
8.9 g/cm 3

Thermal

Latent Heat of Fusion
220 J/g
Maximum Temperature: Mechanical
220 °C
Melting Completion (Liquidus)
1060 °C
Melting Onset (Solidus)
1020 °C
Specific Heat Capacity
390 J/kg-K
Thermal Conductivity
200 W/m-K
Thermal Diffusivity
59 mm 2 /s
Thermal Expansion
18 µm/m-K
Thermal Shock Resistance
18 points

Electrical

Electrical Conductivity: Equal Volume
24 % IACS
Electrical Conductivity: Equal Weight (Specific)
24 % IACS

Calculated

Resilience: Ultimate (Unit Rupture Work)
30 MJ/m 3
Resilience: Unit (Modulus of Resilience)
910 kJ/m 3
Stiffness to Weight: Axial
7.5 points
Stiffness to Weight: Bending
18 points
Strength to Weight: Axial
16 points
Strength to Weight: Bending
16 points

Environmental

Base Metal Price
60 % relative
Embodied Carbon
4.7 kg CO 2 /kg material
Embodied Energy
73 MJ/kg
Embodied Energy
73 MJ/kg 31 x 10 3 BTU/lb
Embodied Water
320 L/kg
Embodied Water
320 L/kg 38 gal/lb
Registered Designations & Aliases
C17500CW104CCW104CCuCo2BeUNS C17500 (CW104C) Cobalt-Beryllium Copper
Standards

ASTM B441 ASTM B441: Standard Specification for Copper-Cobalt-Beryllium, Copper-Nickel-Beryllium, and Copper-Nickel-Lead-Beryllium Rod and Bar (UNS Nos. C17500, C17510, and C17465)

ASTM B441 ASTM B441: Standard Specification for Copper-Cobalt-Beryllium, Copper-Nickel-Beryllium, and Copper-Nickel-Lead-Beryllium Rod and Bar (UNS Nos. C17500, C17510, and C17465) Copper: Its Trade, Manufacture, Use, and Environmental Status, Gunter Joseph, 2001 Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993

EN 12163 EN 12163: 1998 Copper and copper alloys. Rod for general purposes

EN 12165 EN 12165: 1998 Copper and copper alloys. Wrought and unwrought forging stock

EN 12166 EN 12166: 1998 Copper and copper alloys. Wire for general purposes

EN 12167 EN 12167: 1998 Copper and copper alloys. Profiles and rectangular bar for general purposes

EN 12420 EN 12420: 1999 Copper and copper alloys. Forgings

EN 13148 EN 13148: 2001 Copper and copper alloys. Hot-dip tinned strip

EN 1652 EN 1652: 1998 Copper and copper alloys. Plate, sheet, strip and circles for general purposes

EN 1654 EN 1654: 1998 Copper and copper alloys. Strip for springs and connectors