AWS A5.4: E347-15 | EN ISO 3581-A: E 19 9 Nb B 22 | DIN EN 1600: E 19 9 Nb B 22 | Werkstoff Nr: 1.4551
Basic Coated | Nb-Stabilized Austenitic | For Cryogenic and High-Temperature Stainless Applications
StarBlaze Prime 347-15 is a basic-coated, niobium-stabilized stainless steel electrode designed for welding austenitic stainless steels where resistance to intergranular corrosion and thermal fatigue is critical. With approx. 4–8% ferrite and 0.45% Nb in the weld deposit, it is ideal for applications involving cryogenic temperatures or long-term exposure up to 800°C. Delivers a clean bead with soft arc, low spatter, and easy slag removal.
Typical Weld Metal Chemical Composition (%)
| C | Si | Mn | Cr | Ni | S | P | Nb |
| 0.04 | 0.50 | 1.40 | 19.0 | 10.00 | 0.015 | 0.020 | 0.45 |
Typical Mechanical Properties (All Weld Metal)
| Yield Strength
Rp (N/mm2) |
Tensile Strength
Rm (N/mm2) |
Elongation
A5 (%) |
Charpy Impact Value
(ISO-V J -60°C) |
| ≥ 450 | ≥ 590 | ≥ 35 | ≥ 47 |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 2.50 | 50-70 |
| 3.15 | 70-100 |
| 4.00 | 110-140 |
| 5.00 | 140-170 |
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