Postalloy® TungGuard™ 299-MCO
Postalloy® TungGuard™ 299-MCO 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.
Please visit our dedicated Tungsten Carbide Hardfacing website here for more information.
Specifications
Product Type
- Tungsten Carbide Wire
- Metal-cored
- Open-arc
- Wire
Applications
- Scraper blades
- Bulldozer blades/end bits
- Grader blades/bits
- Stabilizers
- Mixer screws
- Feed screws
- Fan blades
- Concrete mixer paddles
Weld Deposit Properties
- Additional:
- Tungsten carbide hardness - 2300 HV
- Average hardness of weld deposit matrix alloy:
- 60-65Rc
- Deposits will readily relief check-crack
- Deposit Thickness:
- Maximum 2 layers
Welding Parameters
Current Type: DC Electrode Positive
| Volts | Amps | Diameter | Stick Out |
|---|---|---|---|
| 23-26 | 120-240 | 1/16" (1.6mm) | 1"-1½" (25-38mm) |
| 23-26 | 250-350 | 3/32" (2.4mm) | 1½" (38mm) |
Welding Procedure:
Packaging Options
| Diameter | Standard Packaging |
|---|---|
| 1/16" (1.6mm) | 25 lb spool (11.30kgs) |
| 3/32" (2.4mm) | 55 lb coil (25kgs) |