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Product Reference View detailed information about Postalloy® Hardfacing Products
POSTALLOY®
299-SPL
Description
POSTALLOY® 299-SPL is an open-arc hardfacing overlay that utilizes a specially formulated tungsten carbide to produce a "highly feathered" microstructure that is unusually hard and more abrasion resistant than standard tungsten carbide hardfacing wires. Operates at lower than normal currents to minimize dilution and help develop its high hardness and unique microstructure in the first layer. For extreme earth abrasion resistance with little or no impact.
Specifications
Product Type
Tungsten Carbide Wire: Metal-cored, open-arc
Deposits are slag-free

Weld Deposit Properties
Hardness
Tungsten Carbide - 2300 HV
Matrix Alloy
60-65Rc
Deposit Thickness
2 layers maximum
Deposits will readily relief check-crack

Applications
Scraper blades
Bulldozer blades/end bits
Grader blades/bits
Stabilizers
Mixer screws
Feed screws
Fan blades
Concrete mixer paddles

POSTALLOY® 299-SPL    Welding Parameters
Current: DC Reverse Polarity
Diameter
Amps
Volts
Stick Out
1/16" (1.6mm)
120-240
23-26
1"-1½" (25-38mm)
3/32" (2.4mm)
250-350
23-26
1½" (38mm)

Packaging Options
Diameter
Standard Packaging
1/16" (1.6mm)
25 lb spool
3/32" (2.4mm)
55 lb coil