StarBlaze Prime 307-26
AWS A5.4: E307-26 | DIN EN ISO 3581-A: E 18 9 Mn Mo R 53 | Werkstoff Nr: 1.4370
Low Spatter, High Strength, Buffer-Layer Capable Stainless Electrode
Rutile heavy-coated 19/9 Mn stainless steel electrode for joining and overlaying manganese steels, carbon steels, and high-sulphur/high-phosphorus alloys. Offers stable arc, low spatter, and excellent slag removal. Suitable for buffer layers and joining dissimilar metals in demanding structural applications.
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
- Synthetic rutile coating ensures smooth, stable arc
- Easy slag removal, low spatter, smooth bead appearance
- Designed for manganese steel overlays and dissimilar metal joining
- Tensile strength: >550 N/mm² | Elongation: >35%
- Hardness: 180–220 BHN (as welded), up to 500 BHN (work-hardened)
- Compatible base materials: Mn austenitic steels (Z120M12, X120Mn12), spring steels (45Cr4, 1.7035, 1.5024, 51Si7)
Industries
- Civil engineering and infrastructure
- Railway component repair
- Cement industry equipment
- Spring steel repair and fabrication
- Dissimilar steel joining and buffering operations
Processes
- Manual Metal Arc Welding (MMA / SMAW)
- AC or DC polarity welding
- Buffer layer deposition
- Manganese steel overlaying
- Joining dissimilar steels
- Multi-pass repair welding
- Surface buildup on worn or cracked components
Additional Details
- Use case: Buffer-layer welding, dissimilar joint build-up, and manganese steel overlays
- Handling: Redry at 250–300°C for 1 hour if exposed to moisture
- Storage: Store in a dry oven or sealed pack to prevent hydrogen pickup
- Limitations: Avoid overwelding on work-hardened zones; not suited for root pass pipe welds
Product Details
Typical Weld Metal Chemical Composition (%)
| C | Si | Mn | Cr | Ni | S | P | Mo |
| 0.10 | 0.50 | 5.10 | 19.00 | 9.50 | 0.020 | 0.030 | 0.50 |
Typical Mechanical Properties (All Weld Metal)
| Tensile Strength
Rm (N/mm2) |
Elongation
A5 (%) |
Hardness
(As Welded) |
Hardness
(Work Hardening) |
| ≥ 550 | ≥ 35 | 180-220 BNH | 500 BNH |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 3.15 | 90-130 |
| 3.20 | 90-130 |
| 4.00 | 140-190 |
| 5.00 | 190-240 |
