StarBlaze Prime 307
AWS A5.4: E307-16 | DIN EN ISO 3581-A: E 18 8 Mn Mo R 12 | DIN EN 1600: E 18 8 Mn Mo R 12 | Werkstoff Nr: 1.4370
Cushion Layer Welding, Easy Slag Removal, High Impact Strength
Non-magnetic rutile-coated stainless electrode designed for joining and surfacing of manganese steels (up to 14% Mn), high-sulphur/phosphorus steels, and tool or spring steels. Ideal for wear-affected parts and cushioning before hardfacing. Offers excellent bead appearance, low spatter, and strong impact resistance.
Available Packs
-
- Dimensions: 2.50 mm x 350 mm, 3.15 mm x 450 mm ,4.00 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
- Stable arc with smooth bead and minimal spatter
- High elongation (>35%) and impact strength (>75 J)
- Excellent machinability and cushion-layer weld performance
- Slag lifts easily; clean finish aids post-weld operations
- Compatible base materials: Screening steels, spring steels, high Mn austenitic steels, 45Cr4, 1.7035, 1.5024, 1.5026
- Tensile strength: >550 N/mm² | Ni content: 9.00% | Cr: 19.0%
Industries
- Mining and cement equipment (crusher jaws, digger buckets)
- Railway and civil infrastructure
- Spring and tool steel assembly
- Cushion welds for hardfacing
Construction and maintenance of wear-prone machinery
Processes
- Manual Metal Arc Welding (MMA / SMAW)
- AC/DC welding
- Cushion layer deposition prior to hardfacing
- Overlaying on high-Mn or spring steels
- Structural repair welding
- Wear surface restoration
- Dissimilar joint welding
Additional Details
- Use case: Cushioning layers, spring steel welding, dissimilar steel joints
- Handling: Redry at 250–300°C for 1 hour if exposed to moisture
- Storage: Store in a dry, ventilated space to prevent hydrogen pickup
- Limitations: Avoid overwelding or prolonged arc time on work-hardened surfaces; not suitable for root passes
Product Details
Typical Weld Metal Chemical Composition (%)
| C | Si | Mn | Cr | Ni | Mo | S | P |
| 0.12 | 0.50 | 5.10 | 19.0 | 9.00 | 0.50 | 0.012 | 0.015 |
Typical Mechanical Properties (All Weld Metal)
| Tensile Strength
Rm (N/mm2) |
Elongation
A5 (%) |
Charpy Impact Value
(ISO-V J RT) |
| ﹥550 | ﹥35 | ﹥75 |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 2.50 | 60-90 |
| 3.20 | 80-120 |
| 4.00 | 100-150 |
