Alumina Copper Alloy RWMA Class 22 For Electrical Relay Systems Components

Place of Origin China
Certification ISO,SGS
Model Number RWMA Class 22 (UNS.C15725)
Minimum Order Quantity 100kgs
Price 20USD
Packaging Details Packed into wooden case
Delivery Time Usually 10-15 days
Payment Terms L/C, T/T, Western Union
Supply Ability 200T/Month

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Product Details
Name Seam Welding Wheels Copper Rods Grade RWMA Class 22 (UNS.C15725)
Specification Custom Diameter & Sizes, Random Mill Lengths Advantage With High Conductivity
Safe Handling No Special Health Risk Machining Property Good
Density G/cm³ 8.86 Cu(Min) Standard
Export To All Over The World Available Shape Rod, Bar, Wire, Flat Prodcuts
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Alumina Copper Alloy RWMA Class 22


UNS.C15725 Alumina Copper Alloy

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Product Description

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

Packed in woodencases




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 10 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 -


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 -


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.


Product Photos:

Alumina Copper Alloy RWMA Class 22 For Electrical Relay Systems Components 0