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Postalloy® 
2829-MCO (formerly part 2829-SPL)
Description
Postalloy® 2829-MCG 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 or gas-shielded
Deposits are slag-free.

Weld Deposit Properties
Hardness  
64-68Rc
Maximum Thickness  
2 Layers
Good Hot-Hardness up to 1100┬░F (593┬░C)  
Deposits are non-machinable  
Deposits will check-crack to relieve stresses  

Applications
Plow mold boards
Mixer paddles
Paving machine paddles
Tamper tools

Postalloy® 2829-MCO    Welding Parameters
 
Current: DC Electrode Positive
Short Arc Amps Volts Stick Out
.045" (1.1mm) 130-18015-263/4"-1"(19-25mm)
1/16" (1.6mm)160-210 19-23 1"(25mm)
Spray Arc Amps Volts Gas Stick Out
.045" (1.1mm) 200-28028-30Ar/Ox3/4"(19mm)
1/16" (1.6mm)260-32029-31Ar/Ox3/4"(19mm)

Welding ProcedureIf 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
Special Packaging Available
.045" (1.1mm)
25 lb spool
1/16" (1.6mm)
25 lb spool
55 lb coil