StarBlaze Prime 8018-B2
AWS A5.5: E8018-B2 | ISO 3580-A: ECrMo1B42 H5
Cr-Mo Toughness | Stress-Relieved Stability | 550 °C Pressure Grade Workhorse
A low-hydrogen basic electrode tailored for welding chromium-molybdenum alloyed steels used in boilers, pressure vessels, and piping systems operating up to 550 °C. Delivers excellent arc stability, good slag detachability, and high mechanical consistency—particularly in stress-relieved or creep-exposed environments.
Available Packs
- Dimensions: 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 Customisable packaging available on request
Key Features
- Suitable for creep-resistant Cr-Mo steels up to 550 °C
- Low-hydrogen basic coating ensures crack-free welds
- Stable arc in all positions; minimal slag retention
- High toughness and elongation under thermal stress
- Compatible with PWHT and tempering cycles
- Excellent resistance to pressure hydrogen environments
Industries
- Boiler Tube and Furnace Header Welding
- Oil & Gas Processing (HP Steam Lines)
- Petrochemical Plant Fabrication
- Thermal Power Plant Pipework
- High-Temperature Structural Steel
Processes
- Manual Metal Arc Welding (MMA / SMAW)
- Operates on DC+ polarity
- All-position use: PA, PB, PC, PF, PE
- Recommended for code-quality joints and pressure seams
Additional Details
- Compatible base metals:
• EN: 13 CrMo 4-5, G17 CrMo 5-5
• ASTM: SA182/182M Gr. F2/F11/F12; SA213/213M T11/T12; SA387/387M Gr. 2/11/12 - Re-dry at 300–350 °C for 1–2 hours before use
- Typical PWHT: 690 °C for 1 hour
- For tempering: 0.5h at 700 °C, air-cooled
- For annealing: 0.5h at 930–950 °C, air-cooled then 700 °C hold
- Recommended preheat/interpass: 160–200 °C depending on thickness
Product Details
Typical Weld Metal Chemical Composition (%)
| C | Si | Mo | Mn | Cr | P | S |
| 0.08 | 0.40 | 0.50 | 0.80 | 1.20 | 0.025 | 0.018 |
Typical Mechanical Properties (All Weld Metal)
| Yield Strength
Rp (N/mm2) |
Tensile Strength
Rm (N/mm2) |
Elongation
A5 (%) |
Charpy Impact Value
(ISO-V J +20°C) |
Stress Relieved
(PWHT) |
| ≥ 460 | 600-680 | ≥ 20 | ≥ 47 | 690°C/1hr |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 2.50 | 60-90 |
| 3.15 | 100-140 |
| 3.20 | 100-140 |
| 4.00 | 140-180 |
| 5.00 | 180-230 |
