StarBlaze Prime 12018G
AWS A5.5: E12018-G
Crack-Resistant | Fine-Grained Steel Specialist | Radiographic Quality
A basic coated, ultra-low hydrogen electrode designed to produce tough, crack-free welds on high tensile and fine-grained steels. StarBlaze Prime 12018G ensures highly stable arc performance, easy slag removal, and fine, ripple-free bead appearance. The Ni-Cr-Mn-Mo alloyed weld deposit delivers outstanding crack resistance and mechanical durability which is ideal for applications requiring radiographic-quality welds and exceptional toughness at low temperatures.
Available Packs
-
- Dimensions: 2.50 mm x 350 mm, 3.15 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
- High yield and tensile strength for demanding steel structures
- Excellent notch toughness: impact rated at -40°C
- Crack-resistant weld deposit with superior metallurgical performance
- Fine, ripple-free weld finish with low spatter
- Clean slag release and smooth arc stability
Industries
- Power and process plants
- Bridges, penstocks, and marine structures
- Heavy construction and lifting equipment
- Defence and hydroelectric infrastructure
Processes
- Shielded Metal Arc Welding (SMAW / MMA)
- DC+ polarity recommended
- All-position usability: PA, PB, PC, PF, PE, PF2
- Suitable for radiographic-quality welds
- Designed for crack-sensitive, high-strength steel applications
Additional Details
- Compatible with EN ISO 18275-A steel grades
- Diffusible hydrogen: < 4 ml / 100g weld metal
- Redrying instruction: 300–350°C for 1–2 hours, maximum 3 cycles
- Store in dry conditions; avoid condensation before use
Product Details
Typical Weld Metal Chemical Composition (%)
| C | Si | Mn | Ni | Cr | Mo | S | P |
| 0.07 | 0.40 | 1.70 | 2.30 | 0.80 | 0.60 | 0.010 | 0.020 |
Typical Mechanical Properties (All Weld Metal)
| Test Condition | Yield Strength
Rp (N/mm2) |
Tensile Strength
Rm (N/mm2) |
Elongation
A5 (%) |
Charpy Impact Value
(ISO-V J -40°C) |
| As Welded | ≥ 780 | ≥ 890 | ≥ 16 | ≥ 51 |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 2.50 | 50-90 |
| 3.15 | 90-140 |
| 4.00 | 140-185 |
| 5.00 | 180-240 |
