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Postalloy®
2991-SA
Description
POSTALLOY┬« 2991-SA is a low alloy submerged-arc build-up wire with very good resistance to impact, compression loading, and plastic deformation. It can also be used as a base layer for harder, more wear resistant products like POSTALLOY┬« 2992-SA or POSTALLOY┬« 2993-SA.. Also good when an easily machined "as welded" deposit is required. Use on carbon and low alloy steels.

POSTALLOY┬« 2991-SA contains small amounts of refined submerged-arc flux in the core of the wire, greatly helping slag release, especially when welding highly preheated parts. 
Specifications
Product Type
Wire: Submerged-arc

Weld Deposit Properties
Average Hardness 2 and 3 layers  
27-32Rc
Maximum Deposit Thickness  
Unlimited
Deposits can be flame-cut  
Deposits are fully machinable  

Applications
Tractors, Idlers, and Rollers
Crane wheels
Dredge ladder rolls
Mine car wheels

POSTALLOY® 2991-SA    Welding Parameters
 
Current: DC Reverse Polarity (DCEP)
Diameter Amps Volts Stick Out
3/32" (2.4mm)300-40025-281"-1┬╝"(25-32mm)
1/8" (3.1mm)400-50026-301┬╝"-1┬Ż"(32-38mm)
5/32" (4.0mm)425-54029-321┬╝"-1┬Ż"(32-38mm)

Welding ProcedureFlux: Lincoln 802 Flux
Packaging Options
Diameter
Standard Packaging
3/32" (2.4mm)
500 lb drum
1/8" (3.1mm)
500 lb drum
5/32" (4.0mm)
500 lb drum