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Brand: Böhler Welding
Böhler Thermanit 309L ER309L Dissimilar TIG Welding Rod
Description
ER309L TIG rod for dissimilar joints and buffer layers
Böhler Thermanit 309L is a TIG rod of type ER309L / W 23 12 L for welding dissimilar joints. Böhler Welding calls it well suited for depositing intermediate layers when welding clad materials, designed for very good welding and wetting characteristics and good safety after dilution. The average ferrite content is above 10 FN (above 16 FN on request), and the rod is suitable for service temperatures between -100 °F (about -73 °C) and 575 °F (about 300 °C). It is the standard rod for joining stainless to carbon or low-alloy steel and for buffer layers on clad plate.
Technical specifications
| Parameter | Specification |
|---|---|
| AWS classification | A5.9 / SFA-5.9 ER309L |
| EN ISO classification | 14343-A W 23 12 L |
| Typical analysis, wt % | C 0.02; Si 0.5; Mn 1.7; Cr 23.5; Ni 13.2 |
| Ferrite content | Average above 10 FN (above 16 FN on request) |
| Applications | Surfacing (buffer layer) on unalloyed or low-alloyed steel; joining non-molybdenum stainless and carbon steel; mixed joints between austenitic and heat-resistant steels and ferritic steels such as P295GH, P355N and ship steels A to E |
| All-weld metal, as welded (typical, minimum) | Yield 64 ksi (441 MPa), min 46; tensile 84 ksi (579 MPa), min 75; elongation 34 %, min 25 |
| Service temperature | -100 to 575 °F |
| Polarity / shielding gas | DC-; I1 (argon) |
| Sizes (length 39 in.) | 1/16; 5/64; 3/32; 1/8; 5/32 in. |
| Approvals | TÜV (19602), DB (43.132.78), DNV, ABS, CE |
Choosing it correctly
The 309L deposit is over-alloyed on purpose, so that after dilution with a carbon-steel base the weld metal remains austenitic with enough ferrite to resist hot cracking. Use it for the first layer on carbon steel before filling with or . Where the process temperature goes above the stated service range or where the weld is exposed to heat-resistant duty, consult Böhler on the right filler. Keep dilution under control with a stringer technique and a modest heat input.
| Related Böhler TIG rod | AWS / EN ISO class | Typical use |
|---|---|---|
| Thermanit JE-308L | ER308L / W 19 9 L | Stainless 304 and 304L |
| Thermanit GE-316L | ER316L / W 19 12 3 L | Stainless 316 and 316L |
| Thermanit 22/09 | ER2209 / W 22 9 3 N L | 2205 duplex stainless |
Handling and what to confirm
Check the ferrite level required by your specification, since the data sheet quotes an average above 10 FN with 16 FN available on request. Keep the rods separate from other stainless fillers by marking and storage, because 308L, 309L and 316L rods look alike. Confirm diameter, pack size and certificate level, and state whether the work is a buffer layer or a dissimilar joint so the correct rod can be checked.
Documents and quotation
The Böhler Welding data sheet for Thermanit 309L (GTAW, US edition) is attached. More rods are in the TIG Welding Wire category. For a quotation, send diameter, pack size, quantity and certificate requirements.
Datasheets & Documents
- Datasheet Böhler Welding Thermanit 309L GTAW product data sheet (US edition) Download
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About brand
Böhler Welding is the welding consumables brand of voestalpine Böhler Welding, part of the voestalpine group, with a portfolio that covers stick electrodes, TIG rods, solid wires, gas-shielded and self-shielded flux-cored wires and submerged-arc wires and fluxes. The company states more than 100 years of experience. Seven Star LLC, an independent supplier in Muscat, lists Böhler Welding consumables and welding machines, including pipeline electrodes, and sources Böhler Welding consumables for fabricators and pipeline contractors.
Böhler Welding product groups
Beyond the consumables above, Böhler Welding lists strip cladding, wire arc additive manufacturing, metal powders, arc spraying cored wires, ceramic weld backing, brazing consumables and welding automation such as orbital welding and collaborative robots. The pipeline range includes cellulosic FOX CEL electrodes and basic vertical-down FOX BVD electrodes for large-diameter line pipe.
Ordering Böhler Welding consumables: what we need
Give the product name, the AWS or EN classification, the diameter and length, and the packaging you need. For pipeline electrodes also state the pipe grade, wall thickness, welding position and whether sour-service test values are required, because the Böhler Welding data sheets note that some test values are available on request.
Related products
Frequently Asked Questions
What is the classification of Thermanit 309L?
AWS A5.9 ER309L and EN ISO 14343-A W 23 12 L.
What is it designed for?
Dissimilar joints and intermediate buffer layers on clad materials.
What ferrite level does it give?
Average above 10 FN, above 16 FN on request.
What service temperature range is stated?
-100 °F to 575 °F.
Which approvals are listed?
TÜV (19602), DB (43.132.78), DNV, ABS and CE.
Reviews
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