Postalloy® 2501-E

Postalloy®2501-E conforms to AWS CoCr-C. Contains a higher percentage of chromium carbides than 2506-E and 2512-E weld deposits, and is harder and more wear resistant, but its impact resistance is somewhat lower and is tougher to machine. Higher tungsten content improves the hot hardness properties and matrix toughness at higher temperatures. Weld deposits also have a greater tendency to relief check if welding procedures are not closely monitored.

Specifications

Product Type

  • Cobalt Base Hardfacing Electrode

Applications

  • Pump sleeves
  • Rotary seal rings
  • Wear pads
  • Expeller screws
  • Bearing sleeves

Weld Deposit Properties

Room Temperature Hardness:
50-55Rc
Hardness at 1500 °F (816 °C):
40Rc
Deposits:
2 maximum
Machinable:
Grind only

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