StarBlaze Prime 7018 (SP) NACE
AWS A5.1: E7018 | DIN EN ISO 2560-A: E 42 5 B 32 H5 | EN 499: E 42 5 B 32 H5 | IS 814: EB5426H3JX
-50 °C Rated | Sour Service Approved | Low Hydrogen Iron Powder Type
A basic heavy-coated, low hydrogen iron powder electrode engineered for demanding structural welding applications, including carbon steels up to 0.40% C. Delivers smooth, finely rippled welds with high mechanical integrity, even under dynamic loads and sub-zero temperatures. Suitable for sour gas environments, conforming to NACE TM-0284 (HIC) and TM-0177 (SSCC) standards.
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, Customisable packaging available on request
- Iron powder, low hydrogen electrode for critical service welding
- Excellent impact toughness (≥ 80 J at –50 °C)
- Radiographic weld quality with smooth arc and slag control
- Suitable for heavy-duty applications including sour gas environments
- Conforms to NACE TM-0284 & TM-0177
- Good re-strike behaviour and mechanical stability under dynamic loads
- Sour Gas & Petrochemical Facilities
- Nuclear and High-Pressure Vessel Fabrication
- Offshore Platforms and Subsea Structures
- Thermal Power Generation Infrastructure
- Heavy Structural Components under Impact/Dynamic Loads
- Manual Metal Arc Welding (MMA / SMAW)
- Operates on both AC and DC+ polarity
- Suitable for all-position welding (PA, PB, PC, PF, PE)
- Ideal for positional welding on pressure-rated components
- Used in fabrication subject to hydrogen-induced cracking and impact loads
- Base materials: S(P)235–S(P)420, GP240–GP280, L245–L360
- Mn+Cr+Ni+Mo+V ≤ 1.75
- Hardness: ≤ 200 BHN (max)
- Re-drying:
• HD5 – 200–300 °C for 1–2 hours, 5 times max
• HD510 – 250–350 °C for 1–2 hours, 5 times max - Recommended for dynamic loading and impact service conditions
- Diffusible hydrogen content < 4 ml per 100g weld metal
Product Details
Typical Weld Metal Chemical Composition (%)
| C | Mn | Si | P | S | Ni | Mo |
| 0.06 | 1.30 | 0.30 | 0.015 | 0.010 | 0.10 | 0.10 |
Typical Mechanical Properties (All Weld Metal)
| Heat Treatment | Yield Strength
Rp (N/mm2) |
Tensile Strength
Rm (N/mm2) |
Elongation
A5 (%) |
Charpy Impact Value
(ISO-V J -50°C) |
Hardness |
| As Welded | 450 | 510-610 | 30 | 80 J | 200 BHN Max. |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 2.50 | 60-80 |
| 3.15 | 110-135 |
| 4.00 | 140-180 |
| 5.00 | 180-230 |
