Stainless Steel Electrodes
ES 347 A5.4: E 347-17 / EN 1600: E 19 9 Nb R 12
Description
ES 347 is a low carbon rutile coated electrode. It gives a niobium stabilised, Cr-Ni type filler metal of AISI 304 or similar quality. It has an excellent strength especially in oxidising environments like nitric acid. Smooth weld beads are highly resistant to acids and to inter granular corrosion at operating temperatures up to 350°C. Re-drying is 300°C min. 2 h.
Typical Chemical Composition (%)
| Si | Mn | Cr | C | Ni | N |
|---|---|---|---|---|---|
| 0.80 | 0.70 | 19 | 0.03 | 9.5 | 0.5 |
Typical Mechanical Properties
| Yeild Strength | Tensile Strength | Elongation 5x D | Impact (ISO-V) |
|---|---|---|---|
| 520 N / mm² | 600 N / mm² | % 35 | +20°C - 55 J |
Applications
ES 347 can be used particularly in the welding of austenitic stainless steels of AISI 321 and 347 type. It can also be used for Cr-Ni steels and for steel cast parts having same or similar analysis results with the electrode. Tanks, pipes and vessels that are used in chemical, milk and food industries; parts exposing to the effect of acid, gas and vapor; and water fittings are among some application areas.
Sizes Available & Recomennded Currents
| Diam. (mm) | Length (mm) | Current (Amperes) | Arc Voltage | Wire Feed |
|---|---|---|---|---|
| 2.5 | 250 | 50 - 80 | ||
| 3.25 | 300 | 95 - 110 | ||
| 4.00 | 350 | 120 - 160 |
Welding Current
AC min. 50 V / DC { + }
Welding Positions
 Flat |
 Horizontal |
 Vertical Up |
 Overhead |
 Fillet |