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E 309L -16

Name: E 309L -16
Brand: SHREE KAILAJI ALLOYS PVT. LTD.
Price: 200.0 INR
Availability: InStock

Price 200.0 INR/ Piece

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MOQ : 100 Pieces

E 309L -16 Specification

Material
STAINLESS STEEL

Usage
WELDING

Diameter
2.5mm, 3.2mm, 4.0mm, 5.0mm

Length
350mm, 450mm

Opening Pattern
Rutile coated, standard

Voltage
20-30V

Welding Current
AC / DC (+), 60-140A (depending on diameter)

Color
GREY

Working Temperature
Up to 300C (572F)

Typical All Weld Metal Composition (%)
C: 0.03 max, Cr: 22-25, Ni: 12-14, Mn: 0.5-2.5, Si: 0.90, P: 0.04 max, S: 0.03 max

Deposition Efficiency
Approximately 110%

Type of Coating
Rutile

Tensile Strength
550 MPa (min)

Yield Strength
350 MPa (min)

Typical Applications
Joining stainless steel to carbon steel, buffer layers, cladding

ISO/TS Specification
ISO 3581-A E 23 12 L R12

AWS Specification
AWS A5.4 E309L-16

Packing
2kg, 5kg, 20kg boxes

Elongation
30% (min)

Storage Condition
Dry and moisture free environment

E 309L -16 Trade Information

Minimum Order Quantity
100 Pieces

Delivery Time
3 Days

Packaging Details
BOX

Main Domestic Market
All India

About E 309L -16

AWS-classified, ultra-low carbon stainless steel welding electrode (23% Cr, 12% Ni) with a titania-type flux (the "-16" part), designed for joining similar stainless steels or dissimilar metals like stainless to carbon/low alloy steel, offering excellent corrosion resistance, crack resistance, and suitability for AC/DC all-position welding, ideal for petrochemical and synthetic fiber equipment.

Key Characteristics & Features:

Composition: Deposits an extra-low carbon (L) weld metal, typically 23% Chromium and 12% Nickel, with high ferrite content for crack resistance.
Coating (-16): A rutile (titania) type coating for smooth arc, good usability, and excellent slag removal, allowing AC or DC+ operation.
Weldability: All-position capability (flat, vertical, overhead) with excellent mechanical properties and resistance to high-temperature oxidation/scaling.
Corrosion Resistance: The low carbon content prevents carbide precipitation, improving resistance to intergranular corrosion, especially important for dissimilar joints.

Typical Applications:

Joining stainless steels (like AISI 309/309L) to themselves.
Welding dissimilar metals: Stainless steel to carbon or low-alloy steels.
Buffer layers on clad steels or for overlaying low alloy steels.
Equipment in the petrochemical, synthetic fiber, and nuclear industries.

Usage Notes:

Requires baking (drying) before use.
Use DC+ or AC, lower currents, and minimize heat input to control dilution and prevent cracking, as noted by Ador Welding and D&H Secheron.

Superior Joining Capabilities

E 309L-16 electrodes are specifically engineered for welding dissimilar metals such as stainless steel to carbon steel. The unique rutile coating assists with arc stability and smooth slag removal, offering optimal weld quality across various operating currents and voltages. This makes it a preferred choice for industrial fabrication, repair, and cladding applications where reliable metal fusion is essential.

Robust Mechanical Performance

With its low carbon content (max 0.03%) and balanced alloy composition-containing 22-25% chromium and 12-14% nickel-E 309L-16 delivers a minimum tensile strength of 550 MPa and yield strength of at least 350 MPa. The weld metal's ductility is also excellent, with elongation above 30%, making it suitable for demanding structural and buffer applications.

Versatile and Efficient Usage

Available in multiple diameters (2.5mm, 3.2mm, 4.0mm, and 5.0mm) and lengths (350mm, 450mm), E 309L-16 accommodates varying welding needs. It operates efficiently on both AC and DC (positive) currents, within a range of 60-140A depending on the electrode size. This flexibility, matched with high deposition efficiency, supports productivity in both field and workshop settings.

FAQ's of E 309L -16:

Q: How is the E 309L-16 electrode used in welding applications?

A: E 309L-16 is typically used for welding stainless steel to carbon steel, forming buffer layers, and for cladding processes. It can be operated using either AC or DC (positive polarity) current, within a range of 60-140A, depending on electrode diameter. The electrode is held at a slight angle to achieve a stable arc and smooth weld bead, and best results are obtained in a dry, moisture-free environment.

Q: What benefits does the rutile coating on E 309L-16 provide?

A: The rutile coating enhances arc stability, simplifies slag removal, and provides a smooth bead profile. This results in easier weld handling, improved penetration, and cleaner finishes-making it especially suitable for less complex joint preparations and for use by both experienced and less-experienced welders.

Q: When should I use E 309L-16 compared to other stainless steel electrodes?

A: E 309L-16 is most appropriate when welding dissimilar metals, particularly joining stainless steel to carbon or mild steel, or where buffer layers are needed to prevent carbon migration. It is also beneficial in cladding and build-up operations where a tough and crack-resistant overlay is required.

Q: Where can E 309L-16 electrodes be sourced in India?

A: E 309L-16 electrodes are available through various importers, manufacturers, suppliers, and traders throughout India. They are typically supplied in 2kg, 5kg, and 20kg packaging, making them accessible for both small-scale and large industrial projects.

Q: What are the typical welding process parameters for E 309L-16?

A: The recommended welding parameters include a voltage range of 20-30V and current between 60 and 140A, chosen based on the electrode diameter. E 309L-16 can be used with either AC or DC (+) and is available in diameters of 2.5mm, 3.2mm, 4.0mm, and 5.0mm, with lengths of 350mm or 450mm.

Q: How should E 309L-16 electrodes be stored to retain quality?

A: To prevent moisture absorption and preserve arc performance, E 309L-16 electrodes should be stored in a dry and moisture-free environment. Keeping the packaging sealed until use also helps protect the rutile coating from atmospheric contamination.

Q: What mechanical properties can be expected from E 309L-16 welds?

A: Welds made with E 309L-16 provide a minimum tensile strength of 550 MPa, yield strength of at least 350 MPa, and a minimum elongation of 30%. These properties ensure the welds are robust, ductile, and suitable for both structural and buffer applications, even at operating temperatures up to 300C (572F).

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