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COPPER-TUNGSTEN ELKANITES - RW SERIES

 

 In the most severe applications of the type associated with power generation and transmissions the circuit breaker may be operated in a protective environment as in SF6 or totally immersed in oil. Under such conditions the advantage of using silver-based materials in terms of tarnish resistance is removed as the exclusion of air from the contacts will prevent oxidation occurring.

 The Elkanite RW copper-tungsten series of material provides maximum economy for the above applications.

 

  Product name

Nominal Composition

Electrical Conductivity % IACS

Thermal Conductivity W/mK

Hardness

 

Elkanite 1W3

60% W-Cu

41

188

77 HRB

Elkanite 3W3

68% W-Cu

33

160

84 HRB

Elkanite 5W3

70% W-Cu

31

154

87 HRB

Elkanite 10W3

72% W-Cu

30

150

90 HRB

Elkanite 30W3

78% W-Cu

28

134

99 HRB

 

The selection of the particular grade of Elkanite RW copper-tungsten material depends on the relative importance of conductivity and arc resistance.

 Elkanite 1W3 provides the maximum conductivity whilst Elkanite 30W3 offers maximum resistance to arcing.

 These materials may be supplied in discs, patches or bars. For maximum economy discs and patches will, wherever possible, be pressed to finished size and shape.


All Mallory Alloys Group products conform to, if not exceed, the relevant standards as assured by the Quality Management System Quality Management System - ISO 9002, EN 29002, BS5750-2


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