13N10 - 13N10 Alumina TIG Nozzle Cup, Size #6 (3/8"), For 9 & 20 Series Torches

Technical Overview of the 13N10 Alumina Nozzle

The Generic 13N10 Alumina Nozzle is a critical consumable component designed for Gas Tungsten Arc Welding (GTAW) applications utilizing 9, 20, and 25 series TIG torches. This nozzle, designated by the industry-standard part number 13N10, features a #6 orifice, corresponding to a bore diameter of 3/8 inch (approximately 9.5 mm). The nozzle is fabricated from high-purity alumina oxide (Al2O3) ceramic, a material selected for its exceptional dielectric strength, high thermal conductivity, and resistance to thermal shock. These properties are essential for maintaining the structural integrity of the nozzle when subjected to the rapid heating and cooling cycles inherent in TIG welding processes.

Dimensionally, the 13N10 adheres to standard specifications with an overall length of 1-15/16 inches (49 mm). It is designed to thread directly onto standard 13N-series collet bodies, ensuring a gas-tight seal that promotes laminar shielding gas flow. The 3/8-inch exit diameter is optimized for medium-amperage applications, typically ranging from 70 to 150 amps depending on the tungsten electrode size and gas flow rate. The alumina composition allows the nozzle to withstand the radiated heat from the welding arc without fracturing or degrading, although it remains a consumable item that requires periodic replacement due to mechanical wear or spatter accumulation.

Compatibility is a key technical feature of this component. It is engineered to interface seamlessly with air-cooled 9-series torches and water-cooled 20 and 25-series torches. While primarily designed for these smaller torch bodies, it can also be utilized on 17, 18, and 26 series torches if the torch is equipped with a compatible stubby collet body adapter. The nozzle's wall thickness is calibrated to provide a balance between durability and accessibility, allowing the welder to maneuver the torch into moderately restricted joints while maintaining adequate shielding gas coverage.

In industrial MRO contexts, the 13N10 is categorized as a high-frequency consumable. Its performance metrics regarding gas lens compatibility (when used with specific adapters) and duty cycle adherence make it a staple inventory item for fabrication shops working with carbon steel, stainless steel, and aluminum alloys. The ceramic material is non-conductive, preventing electrical shorts should the nozzle inadvertently contact the workpiece during the welding operation.