Postalloy® 2501-B

Postalloy®2501-B: Conforms to AWS CoCr-C. Contains a higher percentage of chromium carbides than 2506-B and 2512-B 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. Check upon cooling.

Specifications

Product Type

  • Tig
  • Oxy-fuel

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

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 (4.54kgs) tubes