Alumina Copper Alloy RWMA Class 22 (UNS.C15725) For Electrical Relay Systems Components
Product Normal Description:
| Product Name | Alumina copper alloy |
| Model No. | RWMA Class 22 (UNS.C15725) |
| Product Specification: | Custom specification is available upon request. |
| Available Products: | Round rods, bars, wire, flat products |
| Delivery Time: | Usually within 10~15 days |
| Package: | Packed in woodencases |
| Brand Name: | CUBERYLLIUM® |
About CUBERYLLIUM®:
Hangzhou Cuberyllium Metal Technology Co.,Ltd. specialized in supplying beryllium copper alloys, high copper alloys, casting copper alloys, copper foil and other copper alloys. Our products have broadly been used in resistance welding, plastic injetion mold, aviation, shipbuilding, military industry, metallurgy, electronics industry and so on. We strive to offer high quality with competitive price due to our advanced technology and equipment.
Chemical Composition of Alumina Copper Alloy RWMA Class 22 (UNS.C15725):
Product Grade: CUBERYLLIUM ®-C15725 (RWMA Class 22)
| Aluminum | 0.25% by wt. as Al₂O₃ |
| Cu: | Balance |
Typical Physical Properties of Alumina Copper Alloy RWMA Class 22 (UNS.C15725:
| Melting Point | 1083°C | 1981°F |
| Density | 8.86 g/cm3 at 20°C | 0.320 lbs./in3 at 68°F |
| Electrical Conductivity (σ) | 0.504 μ Ω-cm at 20°C | 87% IACS at 68°F |
| Thermal Conductivity (K) | 344 W/m/K at 20°C | 199 Btu/ft2/ft/hr/°F at 68°F |
| Electrical Resistivity (ρ) | 1.98 μ Ω-cm at 20°C | 11.91 Ω circular-mil/ft. at 68°F |
| Coefficient of Thermal Expansion | 16.6 μm/m/°C (20-150°C) | 9.2 μin/in/°F (68-300°F) |
| Modulus of Elasticity (Tension) (λ) | 130 Gpa | 19 x 10⁶ psi |
Mechanical Properties of Alumina Copper Alloy RWMA Class 22 (UNS.C15725):
| Shapes | Thickness or Dia. | Temper | Tensile Strength | Yield Strength | Elongation | Hardness |
| mm | in | or Condition | MPa | ksi | MPa | ksi | % | HRB |
| Flat products | 10 | 0.400 | As Cons.* | 434 | 63 | 345 | 50 | 21 | 72 |
| 2.3 | 0.090 | CW 78% | 586 | 85 | 544 | 79 | 8 | 83 |
| 0.15 | 0.006 | CW 98% | 675 | 98 | 613 | 89 | 6 | - |
| Plate | Up to 130 | 5.0 | As Cons. | 413 | 60 | 296 | 43 | 19 | 68 |
| 25 | 1.0 | CW 60% | 496 | 72 | 441 | 64 | 9 | - |
| 16 | 0.625 | CW 75% | 524 | 76 | 467 | 68 | 9 | - |
| Rod | 38 | 1.5 | As Cons. | - | 64 | - | 52 | 24 | 73 |
| 6.4 | 0.25 | As Drawn | 551 | 80 | 531 | 77 | 14 | 76 |
| Rounds | Up to 760 | 30 | As Cons. | 413 | 60 | 296 | 43 | 19 | 68 |
Applications of Alumina Copper Alloy RWMA Class 22 (UNS.C15725):
Cuberyllium C15725(RWMA Class 22) is primarily designed for applications requiring high electrical and thermal conductivities along with good elevated temperature strength. Cuberyllium C15725 has excellent cold working characteristics and can be drawn into fine wire or rolled into thin sheets.
•Seam welding wheels
•Welding tips
•Electrical motor and generator components
•Electrical relay systems components
•Vacuum tube components
•Microwave tube components
•X-ray tube components
•Hybrid circuit packages
•High performance leadframes
•Medical device components
•Heat exchangers
•Power cables
•High power magnet windings
•Resistance welding electrodes and back-up bars
For applications requiring brazed joints and /or extended high temperature exposure in hydrogen-containing atmospheres or vacuum, low Oxygen is availbale and recommended.
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