Welding Electrode
E309MoL-16 Stainless Steel Welding Electrode
E309MoL-16, also classified as E309LMo-16, is a low-carbon Cr-Ni-Mo stainless steel welding electrode conforming to AWS A5.4 / ASME SFA-5.4. With a typical 22Cr-12Ni-2.5Mo weld metal, it is mainly selected for dissimilar metal welding, including stainless steel to carbon steel or low-alloy steel, and for selected clad steel applications.
Where to Use E309MoL-16
This electrode is commonly used for:
- Stainless steel to carbon steel
- Stainless steel to low-alloy steel
- Mo-containing stainless steel to carbon steel
- 316 / 316L clad steel welding
- Stainless steel buffer or transition layers
- Low-carbon 22Cr-12Ni-2.5Mo stainless steel
- Chemical and petrochemical equipment
- Industrial fabrication and repair
The addition of Mo makes E309MoL-16 particularly relevant to applications involving molybdenum-containing stainless steels, while its low carbon level supports applications where reduced carbon content is required.
Why Choose E309MoL-16?
E309MoL-16 combines the characteristics of a 309-type stainless steel electrode with low carbon and molybdenum alloying.
- Low carbon: C ≤0.04%
- Chromium: 22–25%
- Nickel: 12–14%
- Molybdenum: 2–3%
- Good resistance to weld cracking
- Good heat resistance
- Suitable for dissimilar stainless steel and carbon-steel joints
- Suitable for AC or DC+ welding
Technical Specifications
Item | Specification |
|---|---|
AWS / ASME | A5.4 / SFA-5.4 E309LMo-16 |
EN ISO | ISO 3581-A E 23 12 2 L R |
Welding Process | SMAW / MMA |
Coating | Rutile |
Polarity | AC or DC+ |
Welding Positions | 1G, 2F, 3G, 4G |
Typical Diameter | 2.0–5.0 mm |
Hyundai's S-309MoL.16 is classified as E309LMo-16 and lists 1G, 2F, 3G and 4G welding positions.
Weld Metal Chemistry
Element | AWS Reference (%) |
|---|---|
C | ≤0.04 |
Mn | 0.50–2.50 |
Si | ≤1.00 |
P | ≤0.04 |
S | ≤0.03 |
Cr | 22.0–25.0 |
Ni | 12.0–14.0 |
Mo | 2.0–3.0 |
Cu | ≤0.75 |
These values represent classification limits; actual deposited chemistry varies by manufacturer and welding conditions.
Mechanical Properties
Property | AWS Minimum |
|---|---|
Tensile Strength | ≥520 MPa |
Elongation | ≥30% |
For reference, Hyundai reports typical values of 710 MPa tensile strength and 33% elongation for its S-309MoL.16 product.
Recommended Welding Current
Diameter | Flat / Horizontal | Vertical / Overhead |
|---|---|---|
2.0 mm | 25–55 A | 20–50 A |
2.6 mm | 50–85 A | 45–80 A |
3.2 mm | 70–115 A | 65–110 A |
4.0 mm | 95–145 A | 85–135 A |
5.0 mm | 135–180 A | — |
These are reference values from a commercial E309LMo-16 product. Actual current should follow the supplied electrode TDS and qualified WPS.
E309MoL-16 vs E309L-16 and E309Mo-16
The main distinction is the combination of low carbon + molybdenum.
Electrode | Main Search / Application Focus |
|---|---|
E309-16 | Standard 309 stainless steel welding |
E309L-16 | Low-carbon 309L and dissimilar metal welding |
E309Mo-16 | Mo-alloyed 309 stainless steel welding |
E309MoL-16 | Low-carbon + Mo-alloyed 309 welding |
For 316/316L clad steel and Mo-containing stainless steel to carbon or low-alloy steel, E309MoL-16 is a particularly relevant consumable.
Product Details
Product: E309MoL-16 Stainless Steel Welding Electrode
Equivalent Classification: E309LMo-16
Weld Metal: Low-carbon Cr-Ni-Mo austenitic stainless steel
Typical Alloy: 22Cr-12Ni-2.5Mo
Process: SMAW / MMA
Diameter: 2.0–5.0 mm
GD WELD supplies E309MoL-16 stainless steel welding electrodes for dissimilar metal welding, clad steel, Mo-containing stainless steel and specialty industrial fabrication.
Tags
E309MoL-16, E309LMo-16, E309MoL welding electrode, E309LMo stainless steel electrode, E309MoL stainless steel welding electrode, low carbon stainless steel electrode, 309MoL electrode, 22Cr-12Ni-2.5Mo electrode, dissimilar metal welding electrode, stainless steel to carbon steel electrode, 316 clad steel welding electrode, clad steel welding electrode
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