Postalloy® 243HD Tubular Electrode

Postalloy® 243HD is modified chromium carbide (complex carbide) tubular hardfacing electrode, alloyed with niobium and a small addition of molybdenum. The micro structure has very fine carbides which give improved wear, erosion and 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.

  • 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


Product Type

  • Flux-coated Tubular Electrode


  • 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

Weld deposits will relief check-crack readily
Deposit Thickness:
Maximum 2 layers
Heat Resistance:
Excellent up to 1100 °F (593 °C)
- 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