ER308
Class: ER308
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
P = 0.03 max
Cr = 19.5 – 22.0
S = 0.03 max
Ni = 9.0 – 11.0
Mo = 0.75 max
Mn = 1.0 – 2.5
Cu = 0.75 max
Si = 0.30 – 0.65
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
WW308 is used to TIG welding of un-stabilized stainless steels such as Types 301, 302, 304, 305, 308. This filler metal is the most popular grade among stainless steels, used for general purpose applications where corrosion conditions are moderate.
| Deposited Chemical Composition % (Typical) | ||
| C = 0.04 | Si = 0.30 | Mn = 1.8 |
| P = 0.009 | S = 0.009 | Cr = 20.0 |
| Ni = 9.5 | N = 0.05 | |
| Mechanical Properties (R.T.) | |
| Yield Strength | 61,000 psi |
| Tensile Strength | 90,000 psi |
| Elongation | 41% |
| Reduction of Area | 60% |
Deposited All Weld Metal Properties
Data is typical for ER308 weld metal deposited by Tig using 100% Argon as the shielding gas.
Recommended Welding Parameters |
|||
| 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.