DAIKOFCW 347

FCAW
  • AUSTENITIC STAINLESS STEELS
347

Description

Rutile flux cored wire for flat and horizontal position
The easy handling and the high deposition rate result in high productivity, excellent welding performance and very low spatter formation. The self-releasing slag makes cleaning and pickling easier providing together with increased travel speeds noticeable savings in time and costs. The wire shows good wetting behaviour and a finely rippled surface pattern. These Cr-Ni consumables are usually used for welding chromium-nickel stainless steel base metals of similar composition stabilized with either Nb or Ti.
Specifications
EN ISO 17633-A
T 19 9 Nb P
AWS A5.22
E347T0-1/4
Shielding
M21
Positions
PA, PB, PC
Current
DC+
Packaging Type
BS300 spool
Asme qualifications
F-No (QW432)
6
A-No (QW442)
8

Ferrite

3-12 FN

Pren

18.8

Hardness

84HRB
Chem. Comp. %
DEFAULT
C
0.03
Mn
1.2
Ni
10.3
Cr
18.8
P
0.025
S
0.005
Si
0.45
Mechanical Properties
min
variant
Tensile strength Rm MPa
550
610
Yield strength Rp0.2 MPa
350
440
Elongation A (L0=5d0) %
25
37
Impact Charpy ISO-V
-
80J
Impact Charpy ISO-V
-
-
Welding Parameters
1.2 mm
1.6 mm
Ampere
120A - 280A
200A - 350A
Voltage
22V - 30V
26V - 30V
Packaging
Ø 1,2÷1,6mm
Ø 1,2÷1,6mm
Packaging Type
BS300 spool
BS300 spool
347
Description

Application

This material is designed for welding 18/8 stainless steels, specifically types 321 and 347, stabilized with titanium and niobium. It is also compatible with non-stabilized grades such as 304/304L. Typical operating temperatures range from -100 °C to about 400 °C. The main applications include the food industry, breweries, pharmaceutical equipment, construction, general engineering, and nuclear engineering. However, 347 series consumables are generally not recommended for structural applications at high temperatures where a carbon percentage between 0.04% and 0.08% is required for creep resistance, as specified in the 347H data sheets. For cryogenic applications requiring a Charpy lateral expansion greater than 0.38 mm at -196 °C, it is preferable to use a non-stabilized filler metal with low carbon content and controlled ferrite. Preheating is not necessary and the maximum interpass temperature is 250 °C; post weld heat treatment (PWHT) is not required.

Alloy Type

347 austenitic stainless steel for joining 321 and 347 base materials.

Microstructure

Austenite with a controlled level of ferrite, normally in the range 3-12FN.

Materials

  • EN W.Nr.: 1.4541, 1.4543, 1.4561, 1.4550, 1.4552 (cast)
  • ASTM: 321, 347, CF8C (cast)
  • UNS: S32100, S34700

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