StarBlaze Prime 7018S
AWS A5.1: E 7018-1 H4 | DIN EN ISO 2560-A: E 42 5 B 32 H5 | IS 814: EB 5629H3JX
High Impact Notch Toughness/Crack Resistant, Ultra Smooth Bead, Superior Reliability
A basic heavy-coated electrode for crack-free joint welding applications, producing tough bonds including on steels with 0.40% carbon content. Great metal recovery of up to 115% and optimal operating characteristics in varied positions while welding.
- Available Packs
- Dimensions: 2.40 mm x 350 mm, 2.50 mm x 350 mm, 3.15 mm x 450 mm, 3.20 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
- Ultra-smooth finely rippled beads.
- ≤ 4.0 ml diffusible hydrogen level.
- Highest notch impact toughness in class.
- Superior Reliability for critical welding of C-Mn microalloyed & low-alloy structural steels.
- Crack Resistant joint welding on steels having carbon content up to 0.40%.
- Weld metal recovery of approx. 115%
- Suitable for all positional welding including vertical-up.
- Great toughness properties down to -50°C.
- Ultimate Mechanical Properties in 7018-1 group.
- Suitability for buffer layers.
Industries
- Structural fabrication in high-stress environments
- Power plants and thermal pressure systems
- Oil & gas infrastructure and piping
- Offshore and marine structure welding
- Heavy machinery and chassis construction
- High-performance fabrication in transport or defense sectors
Processes
- Manual Metal Arc Welding (MMA / SMAW) for C–Mn and low-alloy steels
- Suitable for flat, horizontal, vertical-up, and overhead positions
- Compatible with both AC and DC+ polarity for versatile operation
- Produces ultra-smooth, finely rippled weld beads with minimal cleanup
- <4.0 ml/100g diffusible hydrogen content for superior crack resistance
- Delivers highest impact notch toughness in its class for demanding welds
Additional Details
- Base materials: S(P)235–S(P)420, GP240–GP280, L245–L360
- Re-drying:
• HD5: 340–360 °C for 2 hours, up to 5 times
• HD510: 300–350 °C for 2 hours, up to 5 times - Suitable for steels with up to 0.40% carbon
- Stable in high heat-input environments without loss of toughness
- Not recommended for short arc or excessive weaving techniques
Product Details
Typical Mechanical Properties (All Weld Metal)
| Heat Treatment | Tensile Strength Rm (N/mm2) | Yield Strength Rp (N/mm2) | Elongation A5 (%) | Charpy Impact Value (ISO-V J -45° C) |
| As Welded | 550-620 | 450 | 30 | 80 |
Typical Chemical Composition (%)
| C | Si | Mn | P | S |
| 0.07 | 0.35 | 1.40 | 0.020 | 0.020 |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 2.50 | 50-90 |
| 3.15 | 100-140 |
| 3.20 | 100-140 |
| 4.00 | 130-180 |
| 5.00 | 180-230 |
