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.
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 |
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