Postalloy® 243HD Tubular Electrode
Postalloy® 243HD is modified chromium carbide tubular hardfacing electrode, alloyed with niobium and a small addition of molybdenum. The micro structure has very fine carbides which give improved wear, erosionand impact resistance over traditional chromium carbides. It is designed for applications that require more abrasion resistance than Postalloy® 215HD. The carbide concentration is denser and slightly harder but less brittle than Postalloy® 215HD providing a better, more wear-resistant surface.
- Easy out-of-position weldability with the 1/4" (6.4mm) diameter
- Excellent DC operation.
- High metal recovery - no slag to chip. Postalloy® 243HD is over 90% efficient.
- Low amperage
- High deposition rates - up to 3 times faster than ordinary electrode
- Moisture resistant
Specifications
Product Type
- Flux-coated Tubular Electrode
Applications
- Mining and quarry equipment
- Dredge bucket lips and teeth
- Scraper and grader blades
- Crusher mantles and liners
- Screw conveyors
- Palm oil crusher rolls
- Excellent final layer on manganese jaw crushers and swing hammers
- The 1/4" size is ideal for vertical, edge and stringer beads
Weld Deposit Properties
- Additional:
- Weld deposits will relief check-crack readily
- Deposit Thickness:
- Maximum 2 layers
- Heat Resistance:
- Excellent up to 1100 °F (593 °C)
- Hardness:
- - 60Rc
Welding Parameters
Current Type: DC Electrode Positive , AC
| Amps | Diameter |
|---|---|
| 70-130 | 1/4" (6.4mm) |
Welding Procedure:
Remove old hardfacing and any fatigued metal if weld spalling or cracking is a problem. Many steels can be hardfaced without special preheats, if the welding alloy used has relief checking. A low preheat of 150 °F (66 °C) may sometimes aid in weldability. Do not preheat austenitic manganese steels. The interpass temperature of austenitic manganese and most steels should be less than 500 °F (260 °C). Electrode angles should be slightly less than 90°. Do not apply more than two layers. A short arc length and stringer beads are recommended to reduce weld dilution.
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 |