Postalloy® 219HD Tubular Electrode
TUNGSTEN CARBIDE TUBULAR ELECTRODE
When protection with tungsten carbide is needed, Postalloy® 219HD is an ideal choice. Weld deposits contain tungsten carbide in a chromium cobalt rich matrix, providing a good combination of abrasion resistance with impact toughness. Other features include:
- Easy out-of-position weldability with the 1/4" (6.4mm) diameter
- Excellent AC or DC operation, even on a "buzz box"
- Low amperage and high metal recovery - no slag to chip
- High deposition rates - up to 3 times faster than ordinary electrodes
- Moisture resistant coating, even under severe weather or high humidity
Postalloy® 219HD hardfacing is a unique concept in hard facing technology and is over 90% efficient. It's tubular design offers very smooth operational characteristics and permits higher travel speeds and much higher percentages of carbide forming elements contained in the core as compared to ordinary flux-coated electrodes.
Please visit our dedicated Tungsten Carbide Hardfacing website here for more information.
Specifications
Product Type
- Flux-coated Tubular Electrode alloyed with Tungsten Carbide and Chromium
Applications
- Auger points
- Debarking hammers
- Cutter and dredge teeth
- Tamping tools
- Bucket pin ends
- Shredder and anvil knives
- Muller plows
- Mixer paddles and fan blades
- Dredge teeth
Weld Deposit Properties
- Additional:
- Relief checks readily to prevent stress build-up
- Cannot be flame-cut
- Deposit Thickness:
- 2 layers
- Hardness:
- 64Rc - 68Rc
Welding Parameters
Current Type: DC Electrode Positive , AC
| Amps | Diameter |
|---|---|
| 80-130 | 1/4" (6.4mm) |
| 130-180 | 3/8" (10mm) |
| 180-220 | 1/2" (12.7mm) |
Welding Procedure:
Remove old hardfacing and any fatigued base metal. Postalloy® 250 gouging electrode is useful for this purpose. Preheat from 200-400 °F (93-204 °C) is recommended for steels with a carbon content of .25 to .45. Steels with a higher carbon level should be preheated from 400-700 °F (204-371 °C). Do not preheat austenitic manganese steel. Use a minimum arc length equal to about the diameter of the electrode. Hold the electrode at 90° to the work surface for proper application. Do not apply more than two layers. On manganese or hardened steel, an intermediate or cushion layer of Postalloy® 207 is recommended.
Packaging Options
| Diameter | Standard Packaging |
|---|---|
| 1/4" (6.4mm) | Resealable Plastic Box |
| 3/8" (10mm) | Resealable Plastic Box |
| 1/2" (12.7mm) | Resealable Plastic Box |