STARBLAZE PRIME 9018 G(Mod)
AWS A5.5: E9018-G
Superior Moisture Resistance, High Strength Steel Welding, Excellent Crack Resistance
A low hydrogen, moisture-resistant basic coated electrode specially designed for welding high tensile and fine-grained structural steels. StarBlaze PRIME 9018-G (MOD) provides excellent weldability in all positions with outstanding crack resistance and superior low-temperature toughness. The weld metal contains approximately 0.40% molybdenum and 1.00% nickel, making it suitable for welding 16Mo3 and similar alloy steels. It is widely used in earthmoving equipment, boilers, power plant construction, oil refineries, penstocks, and HSLA steel fabrication where high strength and reliability are essential.
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 Vacuum Pack, 4 Kg Box, 5 Kg Box
Master Box: 20 Kg, 30 Kg, 40 Kg, Customisable packaging available on request
Low hydrogen basic coated electrode
Superior moisture resistant coating
Excellent crack resistance
Excellent all-position weldability
0.40% molybdenum alloyed weld metal
1.00% nickel alloyed weld metal
Excellent low-temperature toughness
Suitable for high tensile steels
Radiographic quality weld deposits
Low diffusible hydrogen content (≤5 ml/100g)
Suitable for AC and DC+ polarity
Power Plant Construction
Boiler Manufacturing
Oil Refinery Projects
Earthmoving Equipment Industry
Penstock Fabrication
Heavy Structural Fabrication
Pressure Vessel Manufacturing
Heavy Engineering Industries
Manual Metal Arc Welding (MMA/SMAW)
High strength steel welding
Fine-grained structural steel fabrication
Boiler fabrication and repair
Penstock welding
Pressure vessel fabrication
Heavy equipment manufacturing
Maintenance and repair welding
Designed for high tensile and fine-grained structural steels
Suitable for EN 10113-2 grades S275, S355 and S420
Suitable for EN 10112-3 grades S275, S355 and S420
Suitable for EN 10028-2 grades P235, P265, P295 and P355
Suitable for 16Mo3 and 13CrMo4-5 steels
Suitable for EN 10216-1 grades P235 and P275
Suitable for EN 10217-1 grade P355
Suitable for EN 10213-2 GP240R, G20Mo5 and G17CrMo5-5 cast steels
Keep dry and avoid condensation
Re-dry at 300–350°C for 2 hours
Diffusible hydrogen level maximum 5 ml per 100g weld metal
Product Details
Typical Chemical Composition (%)
| C | Si | Mn | P | S | Mo | Ni |
| 0.06 | 0.40 | 1.40 | 0.022 | 0.016 | 0.40 | 1.00 |
Typical Mechanical Properties (All Weld Metal – As Welded)
| Yield Strength Rp (N/mm²) | Tensile Strength Rm (N/mm²) | Elongation A5 (%) | Charpy Impact Value ISO-V (J) -50°C |
| ≥ 560 | 650-750 | ≥ 20 | ≥ 47 |
Typical Mechanical Properties (All Weld Metal – Stress Relieved at 620°C)
| Yield Strength Rp (N/mm²) | Tensile Strength Rm (N/mm²) | Elongation A5 (%) | Charpy Impact Value ISO-V (J) -50°C |
| ≥ 530 | 620-720 | ≥ 20 | ≥ 47 |
Diffusible Hydrogen
| Property | Value |
| Diffusible Hydrogen (per 100g weld metal) | ≤ 5 ml |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 2.50 | 60-90 |
| 3.15 | 100-140 |
| 4.00 | 140-180 |
| 5.00 | 180-230 |
