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Postalloy® DuraBuild™
2891-MCG (formerly part 2891-SPL)
Description

Postalloy® DuraBuild™ 2891-MCG is a low alloy build-up hardfacing wire with very good compressive strength and resistance to plastic deformation. An ideal base for subsequent overlay with a more wear resistant alloy. Also good when an easily machined "as welded" deposit is required. Use on carbon and low alloy steels.

Specifications
Product Type

Wire: Metal-Cored, Gas-shielded
Deposits are slag-free.

Electrode equivalent: Postalloy® 27


Weld Deposit Properties
Hardness: 21-25Rc  
Maximum Deposit Thickness: Unlimited  
Deposits can be flame-cut  
Deposits are fully machinable  

Applications

Where low alloy buildup is needed


Postalloy® DuraBuild™ 2891-MCG    Welding Parameters
 
Current: Use DC Electrode Positive
Short Arc Amps Volts Stick Out
.045" (1.1mm) 90-200 15-21 1/2"(12mm)
1/16" (1.6mm)150-220 18-213/4"(19mm)
Spray Arc Amps Volts Stick Out
.045" (1.1mm) 250-325 27-30 5/8"(15mm)
1/16" (1.6mm)300-37527-303/4"(19mm)

Welding Procedure

Use 98/2 Argon/Oxygen with 120pps. When welding out-of-position, use the lower ranges of voltages and amperages: 16-19 volts and 100-150 amps.

Packaging Options
Diameter
Standard Packaging
.045" (1.1mm)
25 lb spool
1/16" (1.6mm)
25 lb spool