Postalloy® 2506-B

Postalloy® 2506-B 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.

Specifications

Product Type

  • Tig
  • Oxy-fuel
  • Cobalt Base Hardfacing Alloy

Applications

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

Weld Deposit Properties

Additional:
Crack-free deposits with proper preheat (takeoff)
Deposit Thickness:
2 layers
Machinable:
Deposits are machinable
Hardness:
- 43Rc

Welding Parameters

Current Type : DC Electrode Negative

Volts Amps Gas Tig
15-25 50-80 100% Ar .045" (1.2mm)
15-25 55-90 100% Ar 1/16" (1.6mm)
15-25 75-100 100% Ar 3/32" (2.4mm)
15-30 90-120 100% Ar 1/8" (3.2mm)
15-30 120-140 100% Ar 5/32" (4mm)
15-30 140-160 100% Ar 3/16" (4.8mm)
Oxyacetylene Tip Size Flame
.045" (1.2mm) 3 3x-4x
1/16" (1.6mm) 3-4 3x-4x
3/32" (2.4mm) 3-4 3x-4x
1/8" (3.2mm) 4 3x-4x
5/32" (4mm) 4 3x-4x
3/16" (4.8mm) 5 3x-4x

Welding Procedure:

Packaging Options

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