StarBlaze Prime 8018-B6
AWS A5.5: E8018-B6 | ISO 3580-A: E CrMo5 B 42 H5
Creep-Rupture Stability | +650 °C Resilience | Moisture-Resistant, Hydrogen-Safe Alloy Welds
A basic-coated MMA electrode designed for high-performance welding of 12CrMo19-5 grade steels and other creep-resistant alloys. Engineered to withstand temperatures up to +650 °C, it delivers superior strength, crack resistance, and creep-rupture reliability—particularly in high-pressure hydrogen and petrochemical plant applications.
- 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
- Optimised for 12CrMo19-5 and CrMo steels up to +650 °C
- Excellent moisture resistance for improved hydrogen control
- Stress-relieved toughness with strong creep performance
- Suitable for quench-tempered, high-strength alloy steels
- Consistent weldability in critical pipe and pressure vessel fabrication
- Weld metal chemistry matches base steel for high metallurgical compatibility
Industries
- Hydrocracker and Reformer Units
- High-Pressure Hydrogen Processing
- Chemical and Fertiliser Plants
- Power Station Superheater Assemblies
- Petrochemical Pipe & Pressure Systems
Processes
- Manual Metal Arc Welding (MMA / SMAW)
- DC+ polarity
- All-position usability: PA, PB, PC, PF, PE
- Ideal for code-specific and hydrogen-exposed welding joints
Additional Details
- Base materials include:
• 12CrMo19-5, A182 Gr.F5, A193 Gr.B5, A199 Gr.T5, A213 Gr.T5, A217 Gr.C5
• A234 Gr.WP5, A314 Gr.501, A335 Gr.P5, A369 Gr.FB5, A387 Gr.5, A426 Gr.CP5 - PWHT: 740 °C for 1 hour in air cooling
- Redry electrodes at 300–350 °C for 2 hours before use
- Preheat and interpass: 180–230 °C depending on base thickness
Product Details
Typical Weld Metal Chemical Composition (%)
| C | Si | Mn | Cr | Mo | S | P |
| 0.07 | 0.35 | 0.75 | 5.00 | 0.50 | 0.010 | 0.020 |
Typical Mechanical Properties (All Weld Metal)
| Heat Treatment | Yield Strength
Rp (N/mm2) |
Tensile Strength
Rm (N/mm2) |
Elongation
A5 (%) |
Impact Energy
ISO-V (J) +20°C |
| PWHT 740°C x 1h/air | ≥ 500 | ≥ 600 | ≥ 21 | ≥ 47 |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 2.50 | 60-90 |
| 3.15 | 100-130 |
| 3.20 | 100-130 |
| 4.00 | 140-180 |
| 5.00 | 180-240 |
