AWS A5.4: E347-16 | DIN EN ISO 3581-A: E 19 9 Nb R 12 | DIN EN 1600: E 19 9 Nb R 12 | Werkstoff Nr: 1.4550
Rutile Coated | Nb-Stabilized Austenitic | General Purpose for Cr-Ni Stainless Welding
StarBlaze Prime 347 is a rutile-basic coated stainless steel electrode with Nb-stabilized austenitic weld metal and approx. 5–8% ferrite. Designed for joining stabilized and unstabilized Cr-Ni stainless steels such as 304, 304L, 321, and 347, it ensures excellent resistance to intergranular corrosion while delivering smooth arc performance, low spatter, and self-peeling slag. Suitable for both flat and positional welding, particularly in chemical, food, and general stainless fabrication.
Typical Weld Metal Chemical Composition (%)
| C | Si | Mn | Cr | Ni | S | P | Nb |
| 0.04 | 0.80 | 1.00 | 19.0 | 10.0 | 0.015 | 0.020 | 0.45 |
Typical Mechanical Properties (All Weld Metal)
| Tensile Strength
Rm (N/mm2) |
Elongation
A5 (%) |
Charpy Impact Value
(ISO-V J RT) |
| 590 | 40 | 80 |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 2.50 | 50-80 |
| 3.15 | 70-110 |
| 3.20 | 70-110 |
| 4.00 | 100-150 |
| 5.00 | 140-190 |
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