170.4090 - Bent Spot Welding Electrode SE-4089-4, 2-5/8 Inch Length

Technical Overview of the SE-4089-4 Spot Welding Tip

The SE-4089-4 Spot Welding Tip is a specialized resistance welding electrode designed for applications requiring non-linear access to the workpiece. Identified by the industry-standard part number SE-4089-4, this component features a bent configuration that facilitates welding in obstructed areas, corners, or over lips where standard straight electrodes are ineffective. The unit measures 2-5/8 inches in overall length with a specific offset geometry of 1-3/4 inches, allowing for precise positioning of the weld nugget.

Manufactured from high-grade copper alloy (typically RWMA Class 2 Chrome Copper), this electrode is engineered to withstand the high thermal and mechanical stresses inherent in resistance spot welding. The material ensures optimal electrical conductivity to minimize resistance heating within the electrode itself while maximizing heat generation at the weld interface. The bent design is cold-formed or precision-machined to maintain structural integrity and coolant flow channels, ensuring that the tip remains within operating temperature limits during repetitive cycling.

This tip is compatible with standard resistance welding equipment and electrode holders designed for tapered fittings. It is an essential consumable for industrial fabrication environments, particularly in automotive body repair, HVAC manufacturing, and general sheet metal assembly. Proper maintenance, including regular dressing of the tip face, is recommended to maintain current density and weld consistency.