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Postalloy® 2839-MCO
Postalloy® 2839-MCO is a metal-cored gas-shielded hardfacing wire that is capable of producing single and multiple layer weld deposits comprised of a large volume of extremely hard multi-Carbides surrounded by a Martensitic matrix. Deposits perform well under low and high stress abrasion and show dramatic improvements over traditional Chromium Carbide products. It may be used on carbon, low alloy, and manganese steels. Unlike Chromium Carbide Alloys, 2839-MCO deposits are heat treatable, allowing for tougher weld metal for applications that encounter moderate impact.
Specifications
Product Type
- Wire
- Metal-cored
- Gas-shielded
- Open-arc
Applications
- Mixer paddles
- Dies cutting blades
- Sizing screens
- Chutes & liners
- Concrete pump parts
- Klinker rolls
- Farm implements
- Pipes & elbows
- Conveyor screws
- Wear pads & plates
- Glass recycling
Weld Deposit Properties
- Additional:
- Deposit Thickness:
- Unlimited with proper procedures
- Heat Resistance:
- To 1200°F (649˚C)
- Machinable:
- Poor, grind only
- Hardness:
- 58Rc - 61Rc
Welding Parameters
Current Type: DC Electrode Positive
Volts | Amps | Diameter | Stick Out |
---|---|---|---|
15-26 | 100-225 | .045" (1.1mm) | 3/4"-1"(19-25mm) |
20-28 | 160-300 | 1/16" (1.6mm) | 1"-1½ "(25-38mm) |
Welding Procedure:
While Postalloy® 2839-MCO will easily operate with or without a gas cover, you may find applications for which you prefer a shielding gas. A gas cover for example, will help the weld bead flow out. If a gas cover is used Argon/CO2 or 100% CO2 is recommended. This should cause amperages to go up about 10% and the stick-out should be shortened.
Packaging Options
Diameter | Standard Packaging | Standard Packaging Available |
---|---|---|
.045" (1.1mm) | 25 lb (11.3kg) spool | 220 lb (99.80kg) drum |
1/16" (1.6mm) | 25 lb (11.3kg) spool | 220 lb (99.80kg) drum |