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Postalloy®
2871-MCG (formerly part 2871-SPL)
Description
Tough, shock resistant non-cracking  tool steel hardfacing composition with good resistance to corrosion, metal-to-metal wear, and abrasion. Deposits polish in service to reduce friction and minimize wear of mating parts. Excellent resistance to heat-checking. Multi-layer, crack-free deposits can be obtained with proper procedures.
Specifications
Product Type
Wire: Metal-cored, Gas-shielded
Deposits are slag-free.

Weld Deposit Properties
Hardness: 46-50Rc  
Machinable with carbide tools and good machining practices  

Applications
Steel mill rolls
Cable sheaves
Dredge ladder rolls
Kiln trunnions
Ingot buggy car wheels
Forging Dies

POSTALLOY® 2871-MCG    Welding Parameters
 
Current: Use DC Reverse Polarity
Short Arc Amps Volts Stick Out
.045" (1.1mm) 90-200 15-21 1/2"(12mm)
Spray Arc Amps Volts Stick Out
.045" (1.1mm) 250-325 27-30 5/8"(15mm)

Welding ProcedureUse 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.