Your Global Resource for Industrial Hardface Technology and Wear Resistant Technologies
Postle 50th Anniversary Logo
Your Global Resource for Industrial Hardface Technology and Wear Resistant Technologies
Product Reference View detailed information about Postalloy® Hardfacing Products
Enter Search Phrase
POSTALLOY®
2820-SPL
Description
Postalloy® 2820-SPL is a chromium carbide hardfacing alloy that produces a controlled microstructure of specially sized carbides in a very tough matrix. For applications involving high impact combined with abrasion. Weld metal is tougher than conventional chromium carbide alloys with fewer stress relieving check-cracks. Use on carbon, low alloy, and manganese steels.
Specifications
Product Type
Wire: Metal-cored, open-arc or gas-shielded.
Deposits are slag-free.

Weld Deposit Properties
Hardness  
47-52Rc
Deposit Thickness  
3-5 Layers
Cannot be flame-cut  

Applications
Final overlay on crusher jaws
Impact breaker bars
Cone and roll shells
Pulverizing hammers
Hammer mill hammers

POSTALLOY® 2820-SPL    Welding Parameters
 
Current: DC Reverse Polarity
Diameter Amps Volts Stick Out
.045" (1.1mm)100-250 15-26 3/4"-1"(19-25mm)
1/16" (1.6mm)160-300 20-25 1"-1¼"(25-32mm)
3/32" (2.4mm)250-35023-261"-1½"(25-38mm)
7/64" (2.8mm)250-45024-301"-1½"(25-38mm)

Welding ProcedureWhile all sizes of POSTALLOY® 2820-SPL will easily operate with or without a gas cover, you may find applications for .045" and 1/16" for which you prefer a shielding gas. If a gas cover is used, Argon/CO2 or 100% CO2 is recommended. This will cause amperages to go up by about 10% and the stick-out should be shortened.

When welding out of position, use the lower range of amperages and voltages. In addition, a gas cover may be useful, especially when using a constant current power source and voltage sensing feeder.
Packaging Options
Diameter
Standard Packaging
Special Packaging Available
.045" (1.1mm)
25 lb spool
110 lb drum, 220 lb drum
1/16" (1.6mm)
25 lb spool
110 lb drum, 220 lb drum
3/32" (2.4mm)
55 lb coil
7/64" (2.8mm)
55 lb coil
110 lb drum