StarBlaze HF 350
DIN 8555: E1-UM-350
For Impact & Moderate Abrasion | Machinable Weld Deposit | No Redrying Required
A rutile-coated air-hardening MMA electrode formulated for buildup and wear-facing applications subject to impact and moderate abrasion. Produces a machinable weld metal with 37–40 HRc hardness, making it suitable for shafts, rollers, wheels, sprockets, and general rebuild jobs. Weld metal contains chromium-manganese alloy for durability under shock loading.
Available Packs:
- 3.15 mm x 350 mm – 5 kg box
- 4.00 mm x 450 mm – 5 kg box
- 5.00 mm x 450 mm – 5 kg box
- Master cartons up to 20 kg
- Custom packaging available on request
Key Features
- Hardfacing weld deposit with 37–40 HRc hardness
- Alloyed with Cr-Mn for resistance to moderate wear and compression
- Machinable using standard cutting tools
- Smooth arc behaviour and consistent deposition
- No mandatory redrying required before use
Industries
- Sugar, Steel & Cement Plants
- Heavy Equipment Maintenance
- Agricultural Implement Repair
- Construction Machinery Refurbishment
- Mining & Quarrying Operations
Processes
- Manual Metal Arc Welding (MMA / SMAW)
- Compatible with AC and DC+ polarity
- Welding positions: PA (flat), PB (horizontal), PC (horizontal butt)
Additional Details
- Typical weld metal chemical composition (%):
• C: 0.25 • Si: 0.30 • Mn: 0.60 • Cr: 3.00 • Fe: remainder - Recommended amperage:
• 3.15 mm – 90–120 A
• 4.00 mm – 140–170 A
• 5.00 mm – 180–220 A - No preheat or post-weld heat treatment required in most cases
- Store in sealed containers to avoid moisture pickup
- Re-drying if needed: 100–110 °C for 30 minutes
Product Details
Typical Weld Metal Chemical Composition (%)
| C | Si | Mn | Cr | Fe |
| 0.25 | 0.30 | 0.60 | 3.00 | Rem |
Typical Mechanical Properties (All Weld Metal)
| Hardness |
| 37 – 40 HRc |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 3.15 | 90-120 |
| 4.00 | 140-170 |
| 5.00 | 180-220 |
