ER309/309L
Alloy Type: A5.9, STAINLESS STEEL Bare, Cored and Stranded Electrodes
ER309/309L is very similar to type 309 except for the carbon content being lower than .03%. The extra low carbon content provides good resistance to carbide precipitation and intergranular corrosion.
Typical Applications: works well for dissimilar joints that undergo heat treatment
| AWS Class: ER309/309L | Certification: AWS A5.9/A5.9M:2006 |
| Alloy: ER309/309L | AWS/ASME SFA A5.9 |
| Welding Position: F, V, OH, H | Current:
MIG-DCEP TIG-DCEN |
| Tensile Strength, kpsi: | 86* |
| Yield Strength, kpsi: | 58* |
| Elongation %: | 40* |
*AWS Requirement, Not Specified
Typical Wire Chemistry as per AWS A5.9 (single values are maximum)
| C | Cr | Ni | Mo | Mn | Si | P | S | Cu |
| 0.03 | 23.0-25.0 | 12.0-14.0 | 0.75 | 1.0-2.5 | 0.30-0.65 | 0.03 | 0.03 | 0.75 |
| Typical Welding Parameters | |||||
| Diameter | Process | Volt | Amps | Shielding Gas | |
| in | (mm) | ||||
| .035 | (0.9) | GMAW | 22-23 | 180-210 | Spray transfer 98% Argon/2% Oxygen |
| .045 | (1.2) | GMAW | 23-25 | 195-260 | Spray transfer 98% Argon/2% Oxygen |
| 1/16 | (1.6) | GMAW | 25-28 | 260-390 | Spray transfer 98% Argon/2% Oxygen |
| .035 | (0.9) | GMAW | 19-23 | 55-170 | Short Circuiting Transfer 90% Helium/ 7 ½% Argon / 2 ½% CO2 |
| .045 | (1.14) | GMAW | 19-23 | 100-185 | Short Circuiting Transfer 90% Helium/ 7 ½% Argon / 2 ½% CO2 |
| .035 | (0.9) | GTAW | 12-15 | 60-100 | 100% Argon |
| .045 | (1.14) | GTAW | 13-16 | 70-120 | 100% Argon |
| 1/16 | (1.6) | GTAW | 14-16 | 90-130 | 100% Argon |
| 3/32 | (2.4) | GTAW | 15-20 | 120-175 | 100% Argon |
| 1/8 | (3.2) | GTAW | 16-20 | 150-220 | 100% Argon |