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.


Product Type

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


  • Plow mold boards
  • Mixer paddles
  • Paving machine paddles
  • Tamper tools
  • Cane rake
  • Sugar cane turn plate (Trash plates)

Weld Deposit Properties

Good Hot-Hardness up to 1100 °F (593 °C)
Deposits will check-crack to relieve stresses
Deposits are slag-free
Deposit Thickness:
2 layers
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