Postalloy® 2829-MCO

Postalloy® 2829-MCO is a high hardness hardfacing overlay well suited for applications involving high abrasion or abrasion combined with mild impact. Use on carbon, manganese, 300 series stainless and low alloy steels.

Specifications

Product Type

  • Wire
  • Metal-cored
  • Open-arc
  • Gas-shielded

Applications

  • Plow mold boards
  • Mixer paddles
  • Paving machine paddles
  • Tamper tools

Weld Deposit Properties

Additional:
Good Hot-Hardness up to 1100 °F (593 °C)
Deposits will check-crack to relieve stresses
Deposits are slag-free
Deposit Thickness:
2 layers
Machinable:
Non-machinable
Hardness:
64Rc - 68Rc

Welding Parameters

Current Type : DC Electrode Positive

Volts Amps Short Arc Stick Out
15-26 130-180 .045" (1.2mm) 3/4"-1" (19-25mm)
19-23 160-210 1/16" (1.6mm) 1" (25mm)
Volts Amps Spray Arc Gas Stick Out
28-30 200-280 .045" (1.2mm) Ar/Ox 3/4" (19mm)
29-31 260-320 1/16" (1.6mm) Ar/Ox 3/4" (19mm)

Welding Procedure:

If an external shielding gas is used with short-arc welding, amperages will go up by about 10% and the stick-out should be shortened. While both sizes of Postalloy® 2829-MCG will easily operate with or without a gas cover, you may find applications for which you prefer a shielding gas. If a gas cover is used, Argon/CO2 or 100% CO2 is recommended for short-arc welding. When using spray-arc or pulse-arc welding, 98/2 Argon/Oxygen is recommended. When welding out of position, use the lower range of amperages and voltages. In addition, a gas cover may be useful, especially when using a constant current power source and voltage sensing feeder.

Packaging Options

Diameter Standard Packaging
.045" (1.2mm) 25 lb (11.30kg) spool
1/16" (1.6mm) 25 lb (11.30kg) spool 55 lb (25kg) coil