347 (Electr.) · 772MTC0004
coated electrode, size: 3,2 mm Ø, 350 mm long, 80-110 A, content = 141 pcs / 5 kg, DIN 8556: E 19 9 Nb R 23, material number: corresponds 1.4551, AWS/ASME SFA-5.4: similar E 347 -16, B.S.2916: 19.9.Nb R, NF A 81-343: EZ 19.9 Nb R 23, EN 1600: E 19 9 Nb R
Description
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Rutile coated Rod electrodes for welding of stainless austenitic steels. Weld metal made of stabilised austenitic chromium-nickel steel for operating temperatures up to +400°C; scale resistant up to +800°C.
DIN 8556: E 19 9 Nb R 23, material-no.: equivalent to 1.4551, AWS/ASME SFA-5.4: similar to E 347 -16, B.S.2916: 19.9.Nb R, NF A 81-343: EZ 19.9 Nb R 23, EN 1600: E 19 9 Nb R 12.
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Most important base materials
Stainless austenitic Cr-Ni steel/cast steel
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| Directional analysis of the pure weld metal in % |
| C |
Si |
Mn |
Cr |
Ni |
(Nb+Ta) |
| 0,03 |
0,9 |
0,7 |
19,5 |
10,5 |
0,4 |
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Microstructure
Austenite with delta ferrite
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Special notes
Slag particularly easy to remove. Dark deposit next to the weld can be removed by chloride-free pickling. Weld metal can be polished to a high gloss. Cover insensitive to moisture absorption.
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Re-drying
Generally not necessary. However, the cladding can withstand re-drying up to +350°C.
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