ER347
Class: ER347
AWS: A5.9
Conforms to Certification: AWS A5.9 | ASME SFA A5.9
Weld Process Used for Tig: (GTAW)
AWS Chemical Composition Requirements
C = 0.08 max
Cr = 19.0 – 21.5
Ni = 9.0 – 11.0
Mo = 0.75 max
Mn = 1.0 – 2.5
Si = 0.30 – 0.65
P = 0.03 max
S = 0.03 max
Cu = 0.75 max
Nb = 10 x C (min) – 1.0 (max)
Available Sizes
.030 x 36
.035 x 36
.045 x 36
1/16 x 36
3/32 x 36
1/8 x 36
3/16 x 36
5/32 x 36
Application
ER347 is recommended for welding AISI 347 and 321. The weld metal has good resistance to general corrosion. ER347 is suitable for applications where welds are subjected to high temperatures (+ 750ºF).
| Deposited Chemical Composition % (Typical) | ||
| C = 0.04 | Mo = 0.30 | P = 0.025 |
| Cr = 19.50 | Mn = 1.30 | S = 0.015 |
| Ni = 9.50 | Si = 0.40 | Cu = 0.10 |
| Nb = 0.40 | ||
| Mechanical Properties (R.T.) | |
| Yield Strength | 88,000psi |
| Tensile Strength | 58,000psi |
| Elongation | 42% |
Deposited All Weld Metal Properties
Data is typical for ER347 weld metal deposited by Tig using 100% Argon as the shielding gas.
Recommended
|
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| GTAW “Tig Process” | |||
| Wire Diameter | Amps DCSP | Volts | Shielding Gas |
| .035 | 60-90 | 12-15 | Argon 100% |
| .045 | 80-110 | 13-16 | Argon 100% |
| 1/16 | 90-130 | 14-16 | Argon 100% |
| 3/32 | 120-175 | 15-20 | Argon 100% |
Note: Parameters for tig welding are dependent upon plate thickness and welding position.
Other shielding Gases may be used for Tig welding. Shielding gases are chosen taking Quality, Cost, and Operability into consideration.