The Exocor ER320LR TIG Welding Rod (3.2mm) is a premium austenitic stainless steel filler metal designed specifically for welding Alloy 20 (Carpenter 20) and similar base materials. The ‘LR’ designation stands for ‘Low Residuals,’ indicating a tightly controlled chemical composition where elements such as carbon, silicon, phosphorus, and sulfur are kept to a minimum. This modification is critical for preventing micro-fissuring and hot cracking, issues that frequently affect standard ER320 alloys during the welding process.<\/p>\n
This 3.2mm (1\/8″) diameter rod is ideal for filling joints in thicker sections of pipe, plate, or tank walls. It is widely used in industries that handle aggressive chemicals, particularly in the fabrication of process piping, mixing tanks, and heat exchangers exposed to sulfuric acid and other corrosive media. The rod deposits a weld metal that matches the corrosion resistance of the base metal, ensuring the longevity and safety of the entire assembly.<\/p>\n
Packaged in a durable 10lb tube, these 36-inch cut lengths are kept clean and straight, ready for precision TIG applications. The rod requires 100% Argon shielding gas and operates best on DCEN polarity. By choosing ER320LR, fabricators ensure high-quality, crack-resistant welds in critical corrosion-resistant applications.<\/p>\n