Class: ER309L
AWS: A5.9
Conforms to Certification: AWS A5.9 ASME SFA A5.9
Weld Process Used for Tig (GTAW)
AWS Chemical Composition Requirements
C = 0.03 max
Cr = 23.0 – 25.0
Ni = 12.0 – 14.0
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
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
ER309L has the same qualities as ER309 but with the lower carbon content deemed necessary in many chemical applications. ER309L is preferred over ER309 for cladding over carbon or low alloy steels, or dissimilar joints that are heat treated.
Deposited Chemical Composition % (Typical) | ||
C = 0.015 | Mo = 0.25 | P = 0.012 |
Cr = 23.50 | Mn = 2.0 | S = 0.010 |
Ni = 13.50 | Si = 0.40 |
Mechanical Properties (R.T.) | |
Yield Strength | 58,000 psi |
Tensile Strength | 87,000 psi |
Elongation | 40% |
Reduction of Area | 60% |
Deposited All Weld Metal Properties
Data is typical for ER309L 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.