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Hardfacing with POSTALLOY® Tubular Electrodes
Tubular Electrodes are unique concept in hardfacing technology.

POSTALLOY® Tubular Electrodes are filled with the highest percentage of carbide forming alloys for maximum wear resistance and longest service life of your equipment.

Tubular Electrode Illustration

Benefits of POSTALLOY® Tubular Electrodes Hardfacing Products include:

  • Reduced distortion
  • Reduced dilution improves the performance of the first layer
  • Minimized risk of burn-through
  • Allows hardfacing thin edges
  • Reduces power consumption

In addition to Tubular Electrodes, Postle Industries offers a complete line of Hardfacing Products engineered for maximum service life of your equipment.

POSTALLOY® 210HD
Hardness as Deposited: 50-55Rc
Product Type: Flux-coated Tubular Electrode
Description: POSTALLOY® 210HD is formulated with a high percentage of Chromium Carbide producing a tubular hardfacing electrode that is highly resistant to abrasion with mild or moderate impact. Weld deposits are smooth and take on a high polish to resist sliding particle abrasion. It can be apllied to carbon and alloy steels, as well a cast iron.

High Compressive Strength - Deposits do not tend to shatter and spall off under conditions of high impact. Ideal for gouging abrasion.

Hardness at Elevated Temperatures - The hardness and wear resistance of POSTALLOY 210HD is maintained up to 1000°F(538°C).

Welding characteristics are outstanding - POSTALLOY® 210HD can be used on any type of welding machine, either AC or DC, in both flat and vertical positions.
POSTALLOY® 210HD Product Details
Typical Applications
Swing hammers
Fixed hammers
Shovel buckets
Crusher rolls (rock & shale)
Muller tires
Bucket lips and teeth
Blow bars
Tampers
Mill hammers
Log grapples
210HD Data Sheet
POSTALLOY® 215HD
Hardness: 58-62Rc
Product Type:

Flux-coated Tubular Electrode

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).

POSTALLOY® 215HD Product Details
Typical 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

215HD Data Sheet
POSTALLOY® 216HD
Hardness: 58-62Rc
Product Type: Flux-coated Tubular Electrode
Description: POSTALLOY® 216HD (Chapisco), for Roll-Arcing, is primarily engineered for the sugar cane industry and is to be used while the sugar cane roll is rotating. Postalloy® 216HD produces a rough weld deposit that will aid in pulling, tearing and crushing the sugar cane as it feeds through the rolls during processing. Also used for sugar mill rolls hooks (Picote).

Postalloy® 216HD is a chromium carbide tubular hardfacing electrode with much higher percentages of carbide forming elements contained in the core than with conventional flux-coated electrodes. It's tubular construction allows it to be used at higher deposition rates and much lower current settings than traditional flux-coated electrodes. 1/4" (6.0mm) is used around 100 amps. Weld chemistry produces a chromium carbide weld deposit for overlaying surfaces exposed to high abrasion and medium impact.
POSTALLOY® 216HD Product Details
Typical Applications
Sugar mill rolls (Chapisco)
Sugar mill roll hooks (Picote)
Cane rakes & combs
Casing cane crushers

Outstanding Features
  • Can be applied while the rolls are operating
  • Excellent AC or DC operation
  • 90% efficient
  • Moisture resistant coating, even under severe weather or high humidity
  • All diameters 1/4" (6.0mm), 3/8" (8.0mm), and 1/2" (12.0mm) will fit standard electrode holders

Hammers & bits
Fan (ID) boiler
Fibrizor hammers (Martillo)
Cane knives (Cuchillas)

  • Easy out-of-position weldability with the 1/4" diameter
  • High metal recovery - NO SLAG
  • Low amperage
  • High deposition rates, up to 3 times faster than ordinary electrodes
216HD Data Sheet
POSTALLOY® 217HD
Average Hardness: 63Rc
Product Type: Flux-coated Tubular Electrode
Description: POSTALLOY® 217HD is modified Chromium Carbide tubular hardfacing electrode, alloyed with Niobium and a small addition of Molybdenum. The microstructure has very fine carbides which give improved wear, errosion 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.
   • Easy out-of-position weldability with the 1/4" diameter
   • Excellent DC operation.
   • High metal recovery - no slag to chip. POSTALLOY® 217HD is over 90% efficient.
   • Low amperage
   • High deposition rates - up to 3 times faster than ordinary electrode
   • Moisture resistant
POSTALLOY® 217HD Product Details
Typical Applications
Mining and quarry equipment
Dredge bucket lips and teeth
Scraper and grader blades
Crusher mantles and liners
Screw conveyors
Construction equipment
Excellent final layer on manganese jaw crushers and swing hammers
The 1/4" size is ideal for vertical, edge and stringer beads
The 3/8" size is ideal for covering large areas and button hardfacing
217HD Data Sheet
POSTALLOY® 218HD
Hardness: 63-66Rc
Product Type: Flux-coated Tubular Electrode
Description: POSTALLOY® 218HD is designed for applications involving severe mineral or earth abrasion at temperatures up to 1400°F (760°C). This unique tubular hardface electrode is actually a combination of five types of carbides, uniformly dispersed throughout the weld metal. Several of these carbides have micro-hardness readings that are harder than tungsten carbide. First pass hardness is greater than other hardface electrodes - 63Rc on mild steel. Other outstanding features include:
   • Easy out-of-position weldability with the 1/4" 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® 218HD hardfacing is a unique concept in hardfacing technology and is over 90% efficient. It is tubular, permitting higher travel speeds and much higher percentages of carbide forming elements contained in the core than with ordinary flux-coated electrodes. The tubular design offers very smooth operational characteristics.
POSTALLOY® 218HD Product Details
Typical Applications
Solid waste shredder parts
Agricultural implements
Earth moving and construction equipment
Cement mill parts
Brick making equipment
Cereal grinding equipment and muller plows
218HD Data Sheet
POSTALLOY® 219HD
Hardness: 64-68Rc
Product Type: Flux-coated Tubular Electrode alloyed with Tungsten Carbide and Chromium
Description: When protection with tungsten carbide is needed, POSTALLOY® 219HD is an ideal choice. Weld deposits contain tungsten carbide in a chromium rich matrix for added wear and corrosion protection . Other features include:
   • Easy out-of-position weldability with the 1/4" 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.
POSTALLOY® 219HD Product Details
Typical 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
219HD Data Sheet
POSTALLOY® 220HD
Average 2 Layer Hardness: 64-68Rc
Product Type: Flux-coated Tubular Electrode alloyed with Tungsten Carbide and Chromium Carbide
Description: POSTALLOY® 220HD is a proprietary blend of Tungsten Carbide with a small addition of Chromium Carbide. It produces a very smooth weld deposit with improved impact resistance over pure Tungsten Carbide. The unique blend of Tungsten Carbide in a Chromium rich matrix also provides some corrosion protection but primarily helps to provide a high polish in service to reduce the coeffcient of friction. When protection against severe abrasion, with limited impact, is needed, POSTALLOY® 220HD is an ideal choice.
   • Easy out-of-position weldability with the 1/4" diameter
   • Excellent AC or DC operation, even on a "buzz box"
   • Low amperage and high metal recovery - no slag to chip. POSTALLOY® 220HD is over 90% efficient.
   • High deposition rates - up to 3 times faster than ordinary electrodes
   • Moisture resistant coating, even under severe weather or high humidity
POSTALLOY® 220HD Product Details
Typical Applications
Conveyor screws and augers
Cutter and dredge teeth
Mixer paddles and blades
Shredder and anvil knives
Bucket pin ends
Coal and cement fans
Tamping tools
220HD Data Sheet
POSTALLOY® 221HD
Tungsten Carbide Hardness: 75Rc
Product Type: Flux-coated Tungsten Carbide Tubular Electrode 
Description: POSTALLOY® 221HD is a Tungsten Carbide based product with no Chromium Carbide. It produces a very smooth weld deposit with improved impact resistance over pure Tungsten Carbide. The unique product also provides some corrosion protection but primarily helps to provide a high polish in service to reduce the coefficient of friction. When protection against severe abrasion, with limited impact, is needed, POSTALLOY® 221HD is an ideal choice. 
   • Easy out-of-position weldability with the 1/4" diameter
   • Excellent AC or DC operation, even on a "buzz box"
   • Low amperage and high metal recovery - no slag to chip. POSTALLOY® 221HD is over 90% efficient.
   • High deposition rates - up to 3 times faster than ordinary electrodes
   • Moisture resistant coating, even under severe weather or high humidity POSTALLOY® 221HD is slightly less brittle than 220HD.
POSTALLOY® 221HD Product Details
Typical Applications
Conveyor screws and augers
Cutter and dredge teeth
Mixer paddles and blades
Shredder and anvil knives
Bucket pin ends
Coal and cement fans
Tamping tools
221HD Data Sheet
POSTALLOY® 243HD
Average Hardness: 60Rc
Product Type: Flux-coated Tubular Electrode
Description: POSTALLOY® 243HD is modified Chromium Carbide tubular hardfacing electrode, alloyed with Niobium and a small addition of Molybdenum. The microstructure has very fine carbides which give improved wear, errosion 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.
   • Easy out-of-position weldability with the 1/4" 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
POSTALLOY® 243HD Product Details
Typical 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


243HD Data Sheet


If you have questions or require additional information please contact Postle Industries at (216) 265-9000
or contact your local distributor.