Welding Electrode HF-600 KOBE STEEL is a robust solution for abrasive and wear-resistant applications based on martensite. Ideal for heavy industries such as construction, mining, and heavy equipment.
JIS Z3251 DF2B-600-B
HF-600 welding electrode from Kobe Steel is a special hardfacing electrode designed to provide maximum protection against heavy wear due to abrasion and impact.
With its high alloy content and special formulation, HF-600 is capable of producing a high-hardness weld layer of around 55–60 HRC, ideal for extending the service life of components operating in extreme environments.
These electrodes provide excellent arc stability, minimal spatter, and clean, strong welds.
Suitable for maintenance and re-coating of various industrial equipment such as excavator buckets, bulldozer blades, crusher plates, and other heavy machinery components.
The HF-600 is a reliable solution for the mining, construction, and manufacturing industries that require superior welding performance with exceptional wear resistance.
| Parameters | Description |
| Product Name | Welding Electrode HF-600 |
| Brand | KOBELCO |
| Electrode Type | Welding Electrodes for Hard Surfacing |
| Welding Electrode Size | 3.2 mm, 4.0 mm |
| Welding Process | SMAW |
| Weight Per Packaging | 20 Kg |
| Polarity | AC, DCEP |
Want other options for different needs? See all hardfacing welding electrode options.
The following are the general characteristics of HF-600 Kobe Steel welding electrode:
Electrode Type: Hardfacing (surface coating)
Welded Metal Hardness: Approximately 55–60 HRC after welding and cooling
Abrasion Resistance: Very high resistance to abrasion and heavy impact
Composition: Contains high alloy elements such as chromium to improve wear resistance.
Welding Position: Generally used in flat and horizontal positions.
Arc Stability: Stable and easy to control, producing low spatter
Heat Cracking: Resistant to heat cracking thanks to its reinforced microstructure.
General Applications: Heavy equipment components, bucket teeth, crusher plates, blades, rollers, and other protective surfaces.
Coating Thickness: Can be applied in multiple layers without losing its wear resistance properties.
Usage: Efficient for maintenance and reconditioning of equipment in the mining, cement, and construction industries.
If the load is not too extreme, consider the alternative of using KOBE HF-350.
However, for needs that are still high but not extreme, compare it with KOBE HF-500.
Product | Hv (hardness) | Features | Type of wear | ||||||
| MTM | ABR | HTW | CAV | COR | HRT | IMP | |||
| HF-600 | 350 – 800 | Good wear resistance | O | O | ∆ | – | x | ∆ | ∆ |
Notes: O: Good durability ∆: Slightly lower x: Lower -: Not used for general applications
To understand the basics of selecting KOBELCO wire before applying HF-600, read the guide at KOBE welding electrode.
Recommended welding parameters
| Product | Weld Position | Diameter (mm) | |
HF-600 | F | 3.2 mm | 4.0 mm |
| 90 ~ 130 | 140 ~ 180 | ||
| diameter (mm) | 3.2 | 4.0 |
| HF-600 | 350 | 400 |
| carton (mm) | 170W × 130H × 380L mm | 170W × 120H × 430L mm |
Guidelines for better welding
Order now KOBELCO HF-600 welding electrode for heavy hardfacing needs.
HF-600 features a high-hardness martensitic layer of approximately 55 to 60 HRC that resists severe abrasion while maintaining toughness, with a stable arc, low spatter, and a clean bead that results in increased bucket, blade, and crusher life, reduced downtime, and more manageable maintenance costs in extreme working environments.
HF-600 is ideal for excavator buckets, bucket teeth, bulldozer blades, crusher plates, rollers, and other heavy equipment working surfaces in the mining, cement, and construction sectors because its deposits form a tough wear shield that maintains performance even under high friction loads and intense work cycles.
HF-600 coatings are excellent for material-to-material abrasion and particle abrasion, adequate for working heat and moderate impact, but are not intended for corrosive environments and are not a common choice for cavitation, making them most effective in demanding hardfacing tasks that demand maximum wear resistance without aggressive chemical exposure.
Use a 3.2 millimeter diameter at 90 to 130 amperes and a 4.0 millimeter diameter at 140 to 180 amperes, prioritize a flat position for productivity and bead quality, choose AC or DCEP polarity for weld pool stability, keep the arc length short, and regulate the heat input rhythm to keep distortion under control.
Re-dry at 300 to 350 degrees Celsius for 30 to 60 minutes before use, thoroughly clean off rust and oil, start the arc with a reverse stroke, limit the weave width to a maximum of three to four times the electrode diameter, 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 necessary to suppress cold cracks and distortion.
ISO 9001:2015
ISO 14001:2015
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