Cobalt Beryllium Copper (CW104C) ASTM B441 UNS C17500 Round Bar
We are a professional manufacturer and exporter of Cobalt Beryllium Copper ASTM B441 UNS C17500 Round Bar in China.
About UNS C17500
C17500 copper is a lightly alloyed grade of copper, formulated for primary forming into wrought products. CW104C is the EN numeric designation for this material. C17500 is the UNS number. Additionally, the EN chemical designation is CuCo2Be. And the British Standard (BS) designation is C112. previously,it is also known as ASTM Alloy 10,.
It has the highest base cost among wrought coppers. In addition, it has a moderately high embodied energy and a moderately low thermal conductivity.
ASTM B441 Standard Specification for Copper-Cobalt-Beryllium (UNS No. C17500) and Copper-Nickel-Beryllium (UNS No. C17510) Rod and Bar
This specification covers the requirements for copper-cobalt-beryllium Alloy UNS C17500 , and copper-nickel-beryllium Alloy UNS C17510, rod and bar in straight lengths.
Chemical Composition of UNS. C17500 Beryllium Copper Alloys:
| CUBERYLLIUM® Brand | UNS-Number | Beryllium | Cobalt | Nickel | Cobalt+Nickel | Lead | Copper |
| Cuberyllium-C750 | C17500 | 0.40-0.70 | 2.4～2.7 | – | – | – | Balance |
Typical Physical Properties of UNS. C17500 Beryllium Copper Alloys:
| Density | 8.83 | g/cm3 |
| Density before age hardening | 8.75 | g/cm3 |
| Melting Range | 1000~1070 | ℃ |
| Elastic Modulus | 14.1 | (kg/mm2 (103) |
| Thermal Expansion Coefficient | 18 x 10 -6 | 20 °C to 200 °C m/m/°C |
| Thermal Conductivity | 0.48 | cal/(cm-s-°C) |
Mechanical and Electrical Properties of UNS. C17500(CUBERYLLIUM®-750) Beryllium Copper Round Bars:
| Temper(*) | Diameter | Heat Treatment | Tensile Strength
Mpa |
Elongation Percent
(Min) |
Electrical Conductivity
Percent IACS |
Hardness Rockwell
B Scale |
|---|---|---|---|---|---|---|
| A(TB00) | ALL SIZE | / | 240~380 | 20~40 | 20~35 | B20~50 |
| H(TD04) | ALL SIZE | / | 440~550 | 10~20 | 20~35 | B20~30 |
| AT(TF00) | ALL SIZE | 3 hr 480℃ | 680~900 | 10~30 | 45~60 | B92~100 |
| HT(TH04 | ALL SIZE | 2 hr 480 ℃ | 750~960 | 5~30 | 48~60 | B95~102 |
ASTM B441 UNS C17500 Round Bar Specification
| Property | Specification |
|---|---|
| Material Grade | Beryllium Copper Alloy (Cu-Ni-Be) – UNS C17500 |
| Standard | ASTM B441, ASTM B534 |
| Diameter Range | 3mm to 300mm |
| Length | 100mm to 6000mm |
| Density | 8.26 g/cm³ |
| Hardness | Rockwell B75 – C42 |
Round bar made of ASTM B441 UNS C17500 is a high-performance beryllium copper alloy known for its excellent strength, electrical conductivity, and corrosion resistance. This Cu-Ni-Be alloy offers superior fatigue resistance, stress relaxation properties, and wear resistance, making it ideal for aerospace, electrical, marine, and industrial applications.
