{"product_id":"kobelco-tgx-309l-x-2-2","title":"Kobelco - TGX - 309L x 2.2","description":"\u003cp\u003eKobelco TG-X309L is a specialized, flux-cored TIG welding rod engineered exclusively for non-purging root pass welding. It conforms to the international standard AWS A5.22 R309LT1-5.\u003cbr\u003e\n \u003cbr\u003e\n While it shares the same flux-cored technology as the TG-X308L, the 309L variant features a highly enriched alloy composition designed for high-stress joining applications.\u003cbr\u003e\n \u003cbr\u003e\n Key Specifications \u0026amp; Applications\u003cbr\u003e\n Target Materials: Specifically designed for dissimilar metal joints. It is used to connect austenitic stainless steels (such as 304\/304L) to carbon steels or low-alloy ferritic steels.\u003cbr\u003e\n Buffer Layering: Frequently used for cladding or depositing underlayer buffer passes on carbon steels before applying a standard 308L or 316L top cap layer.\u003cbr\u003e\n \u003cbr\u003e\n The No-Purge Advantage: Just like the rest of the TG-X series, its internal flux melts to form a protective slag coating over the reverse side of the root bead. This completely eliminates back shielding gas (Argon purging).\u003cbr\u003e\n \u003cbr\u003e\n Chemical Profile: Formulated with an extra-low carbon profile (? 0.03%) along with a high Chromium (approx. 23–25%) and Nickel (approx. 12–14%) concentration. This high alloy content prevents the weld metal from being overly diluted by the mild steel base plate.\u003cbr\u003e\n Welding Parameters: Runs using Gas Tungsten Arc Welding (GTAW \/ TIG) on Direct Current Electrode Negative (DCEN) polarity with a 100% Argon torch shielding gas.\u003cbr\u003e\n \u003cbr\u003e\n Critical Operating Procedures\u003cbr\u003e\n Root Pass Only: Formulated strictly for the initial root pass. Due to its slag system, it cannot be used for the subsequent filling or capping passes of a joint.\u003cbr\u003e\n Speed and Pitch Control: Standard TIG solid wire techniques will not work here. Operators must feed the rod with a quick, short-pitch travel technique. Moving too slowly traps the molten slag inside the weld pool, leading to slag inclusions.\u003c\/p\u003e","brand":"Kobelco","offers":[{"title":"Default Title","offer_id":56031592644900,"sku":"KB.TGX309L.T220","price":3140.0,"currency_code":"INR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1016\/4938\/3716\/files\/kobelco-tgx-308l-2-2mm-tig-filler-wire-500x500_1-p10769074389284.jpg?v=1787599812","url":"https:\/\/www.weldtools.in\/products\/kobelco-tgx-309l-x-2-2","provider":"weldtools","version":"1.0","type":"link"}