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Description
SELECTARC INOX 347 - Rutile–basic coated niobium-stabilised stainless steel electrode
CLASSIFICATION
| AWS A5.4: E347-17 | ISO 3581-A: E 19 9 Nb R 3 2 |
DESCRIPTION AND APPLICATION
SELECTARC INOX 347 is a rutile–basic coated electrode designed for welding 18% Cr – 8% Ni type austenitic stainless steels.
The electrode is niobium-stabilized, making it particularly suitable for joining Ti or Nb stabilized stainless steels.
It provides smooth, spatter-free welds, easy arc ignition and re-ignition, as well as efficient slag removal.
The deposited metal is resistant to intergranular corrosion and suitable for service at temperatures up to +400 °C.
CHEMICAL COMPOSITION OF WELD METAL (%)
C: < 0.03 ; Mn: 0.7 ; Si: 0.8 ; Ni: 9.5 ; Cr: 19.0 ; Nb: 0.3
MECHANICAL PROPERTIES
Rₘ (MPa): >550 ; Rp₀,₂ (MPa): >350 ; A₅ (%): >30 ; KV (J): +20 °C → >60
SIZE AND WELDING CURRENT
= + | ~ 70 V
| SIZE | AMPERES |
| 2.0 × 300 | 45 A |
| 2.5 × 350 | 70 A |
| 3.2 × 350 | 100 A |
| 4.0 × 350 | 135 A |
| 5.0 × 450 | 180 A |
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