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Bimetal Products

We are a leading Manufacturer of bi-metallic sheets, plates, bi-metallic washers from Mumbai, India.
Bi-Metallic Sheets, Plates, Bi-Metallic Washers

Bi-Metallic Sheets, Plates, Bi-Metallic Washers

Product Price: Rs 250 / KgGet Best Price

Minimum Order Quantity: 100 Kg

Product Details:
MaterialCUPAL Bi-Metallic Sheets, Plates & Washers:
UsageIsolators and switchgears
Country of OriginMade in India
Bi-Metallic Plates and Washers

We manufacture Copper and Aluminium CUPAL Bi-Metallic Sheets, Plates & Washers using thin copper (Cu) sheet metal cladded on pure Aluminium (Base Metal). Both the metals are diffused together to form an inseparable single sheet, through the process of roll bonding.

Standard Specifications we offer for our CUPAL Bi-Metallic Sheets, Plates & Washers:

  1. Purity:
    • Aluminium = 99.90% min
    • Copper = 99.90% min
  2. Standard Composition:
    • By Volume (Type I)                           By Volume (Type II)
      • Copper = 20%                                       Copper = 15%
      • Aluminium = 80%                               Aluminium = 85%
    • By Weight (Type I)                            By Weight (Type II)
      • Copper = 45%                                        Copper = 40%
      • Aluminium = 55%                                 Aluminium = 40%
  3. Density at 200°C:
    • Type I: 3.95 g/cm3
    • Type II: 3.40 g/cm3
  4. Max electrical resistivity at 200°C:
    • Type I: 2.6 u Ω/cm 
    • Type II: 2.8 u Ω/cm
  5. Conductivity (IACS at 200°C ): Based on Material Thickness, ranges from 65.00% – 63.00%
  6. Standard Sheet Size of 600 x 1000mm
  7. Standard Thickness: 1mm, 1.6mm, 2mm & 3mm
  8. Custom size and thickness also available on request

PUSHPAK specialises in making CUPAL Bi-metallic sheets, plates & washers according to CUSTOM requirements. We can provide job – specific solutions according to fitment required, and application, etc.

Additionally, we also specialise in manufacturing Copper and Aluminium Braided & Laminated Flexible Connectors, Jumpers and Shunts according to specifications and requirement of our clients.


Advantages of using Bi-Metallic Plates and Washers:
  • Washers prevent bi-metallic galvanic electro-corrosion at Copper and Aluminium joints
  • CUPAL is not an alloy with Copper layers electroplated together to the Aluminium. The Copper layer is rather mechanically welded to the Aluminium sheet
  • When Aluminium terminals are directly connected to Copper terminals to carry current at a high-voltage, it gives rise to a bi-metallic galvanising corrosion joint, resulting in high heat resistance. These heat joints are oxidised and lose contact causing sparking, voltage dropouts, power loss and failures. To avert such issues, CUPAL is used at dissimilar metal joints of Aluminium and Copper to make similar metals contact.
Industrial Applications of Bi-Metallic Plates and Washers:
  • Substations & Switch yard Bi-metallic clamp and connections
  • Cable lugs and cable end connectors
  • Distribution, panel boards, bus-ducts and bus-bar chambers
  • Bus-ducts and Plug-in Busways
  • Isolators and switchgears
  • Oil and Vacuum Circuit Breakers
  • Overhead connectors
  • Flexible Connectors


Additional Information:

  • Packaging Details: wooden box packing
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