StarBlaze HF 650
DIN EN 8555: E6-UM-60-S
Rutile Coated | Air Hardening | High Abrasion and Impact Resistance
StarBlaze HF 650 is a rutile-coated, high alloy air-hardening type hardfacing electrode designed for extreme metal-to-metal wear environments. It delivers a crack-free, porosity-free, slag-free deposit with a typical hardness of 58–60 HRc. Recommended for surfacing of components exposed to high abrasion and impact, including bulldozer blades, excavator teeth, rock drills, and coal cutter bits.
- Available Packs
- Dimensions: 3.15 mm x 450 mm, 4.00 mm x 450 mm, 5.00 mm x 450 mm
- Pack Sizes: 2.5 Kg Pouch, 5 Kg Box
- Master Box: 20 Kg, 30 Kg, 40 Kg, Customisable packaging available on request
Key Features
- Weld metal hardness of 58–60 HRc
- Non-machinable deposit, excellent for metal-to-metal wear
- Free from slag inclusions, porosity, and surface cracks
- Excellent impact and abrasion resistance in demanding settings
- Ideal for hard surfacing on heavy-duty equipment and mining tools
Industries
- Earthmoving and construction machinery
- Mining and quarrying operations
- Cement, steel, and coal sectors
- Agricultural and excavation tools
- Foundry and casting refurbishment
Processes
- Shielded Metal Arc Welding (SMAW / MMA)
- Polarity: AC or DC (~50V OCV)
- Usable positions: 1G/PA, 2F/PB, 2G/PC
- Short arc welding recommended for stable deposition
- Best for surfacing components where machinability is not required
Additional Details
- Use buffer layer (18/8Mn type) for crack-sensitive base materials
- Preheat high carbon and low alloy steels to 200–400°C depending on thickness
- Guide with short arc; cool slowly in still air post-weld
- Suitable for direct buildup and wear reinforcement applications
Product Details
Typical Weld Metal Chemical Composition (%)
| C | Si | Mn | Cr | Fe |
| 0.60 | 0.60 | 0.60 | 7.5 | Rem. |
Typical Mechanical Properties (All Weld Metal)
| Hardness |
| 58-60 HRc |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 3.15 | 90-120 |
| 4.00 | 140-170 |
| 5.00 | 180-220 |
