STARBLAZE PRIME 550
DIN EN 8555: E6-UM-60P
Impact Resistant, Compression Resistant, Abrasion Resistant Hardfacing
A rutile type hard surfacing electrode designed for producing tough-hard weld deposits with excellent resistance to impact, compression, and abrasion. StarBlaze PRIME 550 is suitable for hardfacing unalloyed and low alloy steels subjected to severe wear conditions and higher tensile stresses. It provides a combination of high hardness and toughness, making it ideal for rebuilding and protecting machine parts exposed to abrasive wear and moderate impact loading. The electrode offers smooth welding characteristics and consistent hardfacing performance for extending component service life.
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, 4 Kg Box, 5 Kg Box
Master Box: 20 Kg, 30 Kg, 40 Kg, Customisable packaging available on request
Excellent abrasion resistance
High resistance to impact loading
Excellent resistance to compression wear
Hardness of 57–61 HRc
Suitable for hardfacing unalloyed steels
Suitable for hardfacing low alloy steels
Tough-hard weld deposits
Excellent wear protection characteristics
Reliable performance under severe service conditions
Suitable for DC+ and AC (~50V OCV) operation
Mining and Quarrying
Cement Industry
Steel Processing Plants
Construction Equipment Manufacturing
Material Handling Industry
Agricultural Equipment Manufacturing
Heavy Engineering Industries
Industrial Maintenance and Repair
Manual Metal Arc Welding (MMA/SMAW) hardfacing applications
Wear-resistant overlay welding
Rebuilding worn machine components
Abrasion resistant surfacing
Impact resistant hardfacing
Maintenance and reclamation welding
Recommended for machine parts, dredge teeth, beater bars, conveyor worms, mill hammers, mixer arms, crusher jaws, and crusher cones
Use a short arc during welding
For crack-sensitive materials, a buffer layer of 18/8 Mn type electrode is recommended
Low alloy and high carbon tool steels should be preheated to 200–400°C depending on composition and thickness
Allow slow cooling in still air after surfacing
Designed for applications requiring a balance of hardness, abrasion resistance, and impact toughness
Product Details
Typical Chemical Composition (%)
| C | Si | Mn | Cr | V | Mo | Fe |
| 0.60 | 0.40 | 0.60 | 7.00 | 0.60 | 0.70 | Balance |
Typical Mechanical Properties (All Weld Metal)
| Property | Value |
| Hardness (HRc) | 57 – 61 |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 3.15 | 90-120 |
| 4.00 | 140-180 |
| 5.00 | 180-240 |
