Welding Electrode HF-500 KOBE STEEL is a high-quality hardfacing electrode for maximum protection against abrasion, ideal for mining equipment and heavy industry.
JIS Z3251 DF2B-500-B
Welding Electrode HF-500 is a specialized electrode for hardfacing applications formulated to provide maximum protection against abrasion wear.
With the ability to produce a durable hard metal coating, HF-500 is perfect for use on the surfaces of heavy equipment, excavator buckets, crushers, cutting blades, and other industrial components that experience high friction.
This welding electrode is capable of forming deposits with stable hardness and a tough metallurgical structure, making it a reliable solution for increasing equipment service life.
The HF-500 is also designed to be easy to apply, either in a flat or slightly tilted position, with neat welding results and minimal spatter.
| Parameters | Description |
| Product Name | Welding Electrode HF-500 |
| Brand | KOBELCO |
| Main Application | Welding electrode for hardfacing |
| Welding Electrode Size | 3.2 mm, 4.0 mm |
| Welding Process | SMAW |
| Weight Per Packaging | 20 Kg |
| Polarity | AC, DCEP |
To understand the basics of selecting KOBELCO wire before applying HF-500, read the guide at KOBE welding electrode.
General Characteristics of Welding Electrode HF-500 Kobe Steel:
Type: Hardfacing electrodes (hard coatings)
Main function: Coating metal surfaces to improve abrasion resistance
Precipitate hardness: About 500 HB (Brinell Hardness)
Weld metal structure: Has a wear-resistant and stable metallurgical structure
Main application: Heavy equipment, excavator buckets, crushers, cutting blades and high-friction parts
Retained wear type: Moderate to severe abrasion
Ease of welding: Good arc stability, low spark, and easy to operate
Welding position: Generally used in flat and slightly tilted positions
Storage: Store in a dry place to maintain coating quality and welding performance
If the work involves more moderate pounding, KOBE HF-350 can be an alternative.
Guide to selecting hard coating welding materials
Product | Hv (hardness) | Features | Type of wear | ||||||
| MTM | ABR | HTW | CAV | COR | HRT | IMP | |||
HF-500 | 350 – 800 | good wear resistance | O | O | ∆ | – | x | ∆ | ∆ |
| Product | HF-500 |
|---|---|
| Hv (Kekerasan) | 350 - 800 |
| Features |
|
| Jenis Keausan - MTM | O |
| Jenis Keausan - ABR | O |
| Jenis Keausan - HTW | ∆ |
| Jenis Keausan - CAV | - |
| Jenis Keausan - COR | x |
| Jenis Keausan - HRT | ∆ |
| Jenis Keausan - IMP | ∆ |
Notes: O: Good durability ∆: Slightly lower x: Lower -: Not used for general applications
When a harder coating than HF-500 is required, compare it to KOBE HF-600.
Recommended welding parameters
Weld Position | Electrode Size (mm) | |
| 3.2 | 4.0 | |
| F | 90 ~ 130 | 140 ~ 180 |
| V,O | 80 ~ 120 | 110 ~ 170 |
Need an alternative with different characteristics? Check out our other hardfacing electrode options.
Guidelines for better welding
Planning to order KOBELCO HF-500 welding electrode? Contact us now for a technical consultation and the best offer.
HF-500 delivers industrial-grade abrasion protection with a stable hard deposit of around 500 HB, increased component life, a steady welding arc, minimal spatter, and a neat bead appearance, resulting in more efficient heavy equipment maintenance and significantly reduced downtime costs.
HF-500 is ideal for excavator buckets, crushers, cutting blades, rollers, sprockets, and other work areas exposed to high friction in mines and factories, because its formula is specially designed to form a protective layer that is resistant to wear while maintaining structural toughness on the work surface.
HF-500 deposit provides a hardness of approximately 500 HB with superior resistance to material-to-material abrasion and particle abrasion, is sufficiently tough to withstand working heat and light impact, but is not intended for corrosive environments, making it an excellent choice for jobs with moderate to heavy friction loads.
Use the 3.2 mm diameter at 90 to 130 A for flat positions and 80 to 120 A for vertical and overhead, while the 4.0 mm diameter is comfortable at 140 to 180 A for flat and 110 to 170 A for vertical and overhead, with AC or DCEP polarity for stable weld pool control and even filling.
Re-dry at 300 to 350 degrees Celsius for 30 to 60 minutes before use, keep the arc length as short as possible, start the arc with a backward stroke technique, limit the weave width to three to four times the electrode diameter, clean rust and oil, apply preheat and control the temperature between passes, continue heating after welding at 300 to 350 degrees Celsius for 10 to 30 minutes, and use PWHT at 550 to 750 degrees Celsius if needed to suppress cold cracks and distortion.
ISO 9001:2015
ISO 14001:2015
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