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S483931-036 - Hobart Sterling AP 309L-16 Stainless Stick Electrode 3/32" 5lb

Packaging: 15lb can
$38.90/lb $291.75/15lb can only $19.45/lbSave 50%

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OVERVIEW

Hobart Sterling AP 309/309L Stainless Steel Stick Electrode

The Hobart Sterling AP 309/309L is a premium quality Shielded Metal Arc Welding (SMAW) electrode designed for high-performance fabrication and maintenance applications. This electrode is formulated with a rutile-based coating that meets AWS E309/309L-16 specifications, providing exceptional versatility in joining stainless steels to carbon or low-alloy steels. The "AP" designation signifies its All-Position capability, ensuring stable arc performance and puddle control even in vertical-up and overhead positions, which is often a challenge with standard stainless electrodes.

Engineered with a low carbon content (0.04% maximum), this electrode significantly reduces the risk of carbide precipitation and intergranular corrosion, making it suitable for high-temperature service environments. It is the ideal choice for applying buffer layers before cladding or for welding type 309 stainless steel base metals. The 3/32-inch diameter is perfect for welding thinner gauge materials or for root passes in thicker sections where precision heat input is required.

Packaged in a durable 5lb can, these electrodes are protected from moisture absorption, ensuring fresh starts and consistent burn-off rates. The slag system is designed for self-releasing or easy chipping, leaving behind a clean, finely rippled weld bead that requires minimal post-weld grinding. Whether used on AC or DCEP polarity, the Hobart Sterling AP delivers a soft, smooth arc with low spatter, maximizing welder productivity and weld quality.

Additional Information
Packaging Description:15lb can
Diameter:3/32"
Grade:309, 309L
Packaging:5lb can
Weld Process:Stick
Polarity:AC or DC+
AWS Spec :E309L-16
Rod Type:Stick Electrode
Coating Type:Rutile / Titania
Welding Position:All Position
Core Material:Stainless Steel
Applications:Buffer Layers, Cladding, Dissimilar Metal Joining
----- new values below ----
Rod Type:Stick Electrode
Coating Type:Rutile / Titania
Welding Position:All Position
Core Material:Stainless Steel
Applications:Dissimilar Metal Joining, Buffer Layers, Cladding
Brand:Hobart
Diameter:3/32"
Grade:309, 309L
Packaging:5lb can
Weld Process:Stick
Polarity:AC or DC+
AWS Spec:E309L-16

INCLUDED

  • 5 lb Can of Hobart Sterling AP 309/309L Stick Electrodes (3/32" Diameter)
  • Instruction Label

APPLICATIONS

  • Dissimilar Metal Joining: Welding stainless steel (304, 309, 316) to mild or low-alloy carbon steel.
  • Buffer Layers: Applying a first pass on carbon steel before cladding with 308L or other stainless alloys.
  • Petrochemical & Power Generation: Maintenance repairs in high-temperature environments requiring oxidation resistance.
  • Food & Beverage: Fabrication and repair of stainless steel equipment where smooth bead appearance is critical.
  • General Fabrication: All-position welding of 309 type stainless steels in sheet metal or structural forms.

FAQ

309L electrodes are primarily used for welding dissimilar metals, such as joining stainless steel to mild steel, or for applying a buffer layer on carbon steel before welding with 308L.

'AP' stands for All Position. This indicates that the electrode is formulated with a fast-freezing slag system that allows for easier welding in vertical and overhead positions compared to standard stainless rods.

Yes, Hobart Sterling AP 309/309L is designed to operate smoothly on both AC (Alternating Current) and DCEP (Direct Current Electrode Positive).

For a 3/32" diameter rod, the typical amperage range is between 45 and 80 Amps, depending on the material thickness and welding position.

The low carbon content (0.04% max) prevents carbide precipitation at the grain boundaries during welding, which significantly reduces the risk of intergranular corrosion in the heat-affected zone.

Stainless steel electrodes can absorb moisture. Once opened, they should be stored in a rod oven at 250°F-300°F (120°C-150°C) to maintain optimal performance and prevent porosity.

While it can weld 304 to 304, a 308L electrode is typically the better match for that application. 309L is best reserved for dissimilar joints or 309 base metals.

This product meets the requirements for AWS A5.4, classification E309-16 and E309L-16.

CATALOGUE & SPEC SHEETS

Spec Sheet
Safety Data Sheet