Performance Material · Copper-Beryllium Alloys
CB4
CuCo2Be · UNS C17500
CB4: Copper-Beryllium Alloys from the Lebronze Alloys North American range.
ASTM B441‐ B534‐ B870RWMA class 3
✓ Lead-free · REACH / RoHSOverview
Copper-Beryllium Alloys.
CB4: Copper-Beryllium Alloys from the Lebronze Alloys North American range.
Sectors served
FamilyCopper-Beryllium Alloys
CompositionCuCo2Be
UNSC17500
TemperTR
Density8.9 g/cm³
Conductivity43 %IACS
MagneticNo
FormsBars
Mechanical properties
Minimum guaranteed properties.
Minimum guaranteed values by grade and product form.
| Grade / spec | Form | Tensile (ksi) | Yield 0.2% (ksi) | Elong. (%) | Hardness (HB) | Hardness (HRC) | Compliant with |
|---|---|---|---|---|---|---|---|
| TR | Bars | 100 ksi | 82 ksi | 12 | 220 | 19 | RWMA class 3, ASTM B441‐ B534‐ B870 |
Data for information only, non-contractual. Request a certified datasheet for design allowables.
Physical properties
| Density | 8.9 g/cm³ |
| Electrical conductivity | 43 %IACS |
| Thermal conductivity | 200 W/m·K |
| Young's modulus | 130 GPa |
| Thermal expansion | 17.5 ×10⁻⁶/K |
| Magnetic permeability | 1.01 |
| Machinability index | n/a |
| NACE corrosion rating | n/a |
Standards & specifications
Norms & designations.
Norms & designations
- ASTM B441‐ B534‐ B870
- RWMA class 3