{"product_id":"kobelco-tig-wire-er90s-b91","title":"Kobelco - TIG Wire - ER90S-B91","description":"\u003cp\u003eKobelco TG-S90B91 is a high-purity solid TIG (GTAW) welding rod belonging to Kobelco’s specialized TRUSTARC series. \u003cbr\u003e\n It is engineered strictly to conform to the AWS A5.28 ER90S-B91 international standard.\u003cbr\u003e\n \u003cbr\u003e\n Key Specifications \u0026amp; Applications\u003cbr\u003e\n Target Materials: Specifically designed for welding Grade 91 (9Cr-1Mo-V-Nb) ferritic heat-resisting steels. \u003cbr\u003e\n This includes ASTM A335 Grade P91 pipes, A213 Grade T91 boiler tubes, and A387 Grade 91 steel plates.\u003cbr\u003e\n Chemical Strategy: Deposits a 9% Chromium and 1% Molybdenum matrix micro-alloyed with Vanadium (V) and Niobium (Nb). \u003cbr\u003e\n Kobelco strictly restricts the Mn + Ni sum to ? 1.0% to prevent lowering the critical transformation temperature (Ac?), preserving premium long-term creep rupture strength.\u003cbr\u003e\n Welding Parameters: Handled via Gas Tungsten Arc Welding (GTAW \/ TIG), operating on Direct Current Electrode Negative (DCEN) polarity using a 100% Pure Argon torch shield.\u003cbr\u003e\n Common Use Cases: Widely deployed for critical root and fill runs in ultra-supercritical thermal power plants, high-pressure boiler headers, oil refinery processing units, and nuclear steam lines operating at 550°C to 650°C.\u003c\/p\u003e","brand":"Kobelco","offers":[{"title":"TG-S90B91 \/ 1.6","offer_id":56031591694628,"sku":"KB.ER90SB91.T160","price":1145.0,"currency_code":"INR","in_stock":true},{"title":"TG-S90B91 \/ 2","offer_id":56031591727396,"sku":"KB.ER90SB91.T200","price":985.0,"currency_code":"INR","in_stock":true},{"title":"TG-S90B91 \/ 2.4","offer_id":56031591760164,"sku":"KB.ER90SB91.T240","price":960.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1016\/4938\/3716\/files\/er80s-b2-tig-welding-wire.jpg?v=1787129906","url":"https:\/\/www.weldtools.in\/products\/kobelco-tig-wire-er90s-b91","provider":"weldtools","version":"1.0","type":"link"}