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Tubular Electrodes Product Reference View detailed information about Postalloy® Hardfacing Products
POSTALLOY®
215HD
Description

POSTALLOY® 215HD is a chromium carbide tubular hardface electrode. It's tubular structure permits higher travel speeds and much higher percentages of carbide forming elements contained in the core than with ordinary flux-coated electrodes. Due to its unique tubular design, POSTALLOY® 215HD offers very smooth operational characteristics and is over 90% efficient. All of the 1/4", 3/8" and 1/2" diameters will fit standard electrode holders.
• Easy out-of-position weldability with the 1/4" diameter
• Excellent AC or DC operation, even on a "buzz box"
• High metal recovery - no slag to chip
• Low amperage and high deposition rates - up to 3 times faster than ordinary electrodes
• Moisture resistant coating, even under severe weather or high humidity.
Weld deposit chemistries consist of chromium carbides combined in such a way as to produce extremely good abrasion resistance coupled with mild to moderate impact resistance. Deposits take on a high polish to resist sliding particle abrasion and will maintain good hot hardness up to 1000°F (538°C).

Specifications
Product Type

Flux-coated Tubular Electrode


Weld Deposit Properties
Hardness
58-62Rc
Deposit Thickness
2-3 passes
Relief checks readily to prevent stress build-up.
Cannot be flame-cut

Applications

Mining and construction screw conveyors
Clamshell and dragline buckets
Bucket lips and teeth
Shredder & Fibrizer hammers

Dozer end bits
Chutes, liner plates
Scraper and grader blades


POSTALLOY® 215HD    Welding Parameters
Current: AC or DC Reverse Polarity
Diameter
Amps
1/4" (6.0mm)
80 - 130
3/8" (9.5mm)
150-180
1/2" (12.7mm)
180 - 325

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. The 1/4" (6mm) diameter can be used for vertical and flat position welding. The 3/8" (8mm) and 1/2" (12mm) sizes should be used for flat only. 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" (6.0mm)
Resealable Plastic Box
3/8" (9.5mm)
Resealable Plastic Box
1/2" (12.7mm)
Resealable Plastic Box