Postalloy® 2506-E Flux-coated Electrode

Postalloy® 2506-E conforms to AWS CoCr-A. Cobalt base hardfacing alloy with chromium carbides providing excellent resistance to metal to metal wear and corrosion over a wide temperature range. Offers outstanding self-mating, anti-galling properties and it is effective when abrasion is accompanied by thermal shock or impact. Deposits are machinable. Crack-free deposits can be made with proper preheat, post heat and inter-pass temperature.


Product Type

  • Cobalt Base Hardfacing Electrode


  • Shear blades, Fluid flow valves, Extrusion screws, Roll bushings, and Valve bearing surface.

Weld Deposit Properties

Crack-free deposits with proper preheat (take off)
Deposit Thickness:
2 layers
35Rc - 48Rc

Welding Parameters

Current Type: DC Electrode Positive

Volts Amps Diameter
15-25 50-70 3/32" (2.4mm)
15-25 80-110 1/8" (3.2mm)
15-25 120-150 5/32" (4mm)
15-30 150-180 3/16" (4.8mm)

Welding Procedure:

Packaging Options

Diameter Standard Packaging
All Diameters 10 lb (4.54kgs) tubes