STARBLAZE PRIME 9018 M
AWS A5.5: E9018-M H4 | EN 757: E 55 5 Z B 32 H5
Superior Moisture Resistance, High Strength Steel Welding, Exceptional Low Temperature Toughness
An extra low hydrogen, basic coated iron powder moisture-resistant electrode specially designed for producing tough and crack-free welded joints in high-strength steels. StarBlaze PRIME 9018-M delivers excellent all-position welding performance, smooth arc characteristics, self-releasing slag, finely rippled weld beads, and X-ray quality weld deposits. The weld metal exhibits excellent notch toughness at -51°C and is particularly suitable for joining high-strength low alloy (HSLA) and micro-alloyed steels in critical structural applications.
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
Extra low hydrogen electrode
Superior moisture resistant coating
Excellent all-position weldability
Smooth and stable arc characteristics
Self-releasing slag
Finely rippled weld bead appearance
X-ray quality weld deposits
Excellent notch toughness at -51°C
Tough and crack-free weld deposits
Suitable for high-strength steels above 600 MPa tensile strength
Diffusible hydrogen below 3 ml/100g
Suitable for AC and DC+ polarity
Pressure Vessel Manufacturing
Power Plant Construction
Oil Refinery Projects
Earthmoving Equipment Industry
Penstock Fabrication
Heavy Structural Fabrication
Pipeline Construction
Heavy Engineering Industries
Manual Metal Arc Welding (MMA/SMAW)
HSLA steel welding
Micro-alloyed steel welding
Pressure vessel fabrication
Pipeline welding
Penstock fabrication
Heavy equipment manufacturing
Maintenance and repair welding
Designed for high-strength low alloy and micro-alloyed steels
Suitable for joining high-strength steels to lower strength 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 and G20Mo5 cast steels
Recommended for N-AXTRA 60 steels and similar HSLA grades
Keep dry and avoid condensation
Re-dry at 300–350°C for 2 hours
Diffusible hydrogen below 3 ml per 100g weld metal
Product Details
Typical Chemical Composition (%)
| C | Si | Mn | P | S | Ni | Mo |
| 0.06 | 0.40 | 1.10 | 0.022 | 0.016 | 1.60 | 0.20 |
Typical Mechanical Properties (All Weld Metal)
| Yield Strength Rp (N/mm²) | Tensile Strength Rm (N/mm²) | Elongation A5 (%) | Charpy Impact Value ISO-V (J) -51°C |
| 540-620 | 620-720 | ≥ 26 | ≥ 47 |
Diffusible Hydrogen
| Property | Value |
| Diffusible Hydrogen (per 100g weld metal) | < 3 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 |
