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Product Reference View detailed information about Postalloy® Hardfacing Products
POSTALLOY®
2812-SPL
Description
Weld deposits of this alloy consists of borides and chromium carbides in a nickel matrix for excellent resistance to low stress abrasion and metal-to-metal wear. The high nickel and chromium content gives this weld deposit good heat and corrosion resistance. This alloy is metal-cored, gas-shielded wire designed for application by GMAW. Deposits are smooth with no slag to chip and no ripples. They may be applied to cast iron, carbon and alloy steels, stainless steel, and nickel alloys. Weld deposits of this alloy offers the same general properties with the essential difference being the hardness and wear resistance. Excellent sliding, metal-to-metal wear resistance with unusually good resistance to galling. Very good resistance to atmospheric, steam and salt water corrosion Excellent heat resistance - deposits maintain their hot-hardness up to 1000°F (538°C). Deposits are non-sparking, non-heat treatable, and non-magnetic.
Specifications
Product Type
Wire: Metal-cored, gas-shielded

Weld Deposit Properties
Excellent sliding, metal-to-metal wear resistance with unusually good resistance to galling
Very good resistance to atmospheric, steam and salt water corrosion
Excellent heat resistance - deposits maintain their hot-hardness up to 1000°F (538°C)
Deposits are non-sparking, non-heattreatable, and non-magnetic
Hardness
Average 40Rc
Deposits are fully machinable

Applications
Shafts Sleeves
Pump parts
Impellers
Bushings
Gauges
Guides cams
Rocker arms

POSTALLOY® 2812-SPL    Welding Parameters
Current: DC Reverse Polarity
Short Arc
Amps
Volts
Gas
Stick Out
.045" (1.1mm)
80-200
16-23
Ar/CO2
1/2"(12mm)
1/16" (1.6mm)
150-220
18-23
Ar/CO2
3/4"(19mm)
Spray Arc
Amps
Volts
Gas
Stick Out
.045" (1.1mm)
220-250
29-33
Ar/Ox
1/2"(12mm)
1/16" (1.6mm)
240-300
30-35
Ar/Ox
3/4"(19mm)

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