Alvktora Weld On Tabs - 1/2" Hole, 1/4" Thick, 4-Piece Steel Weld Tabs

Overview

Meet Alvktora Weld On Tabs, a purpose-built mounting solution designed for tough, dynamic joints. Each kit includes four tabs with a 1/2-inch mounting hole, sized for robust, repeatable welds. The tabs measure about 2-1/2 inches in height, 1-3/4 inches in width, and 1/4 inch thick, with a 15-degree chamfer at the base to help fill gaps and promote clean, confident welds from any angle.

Smart design for reliable alignment

These weld tabs feature an anti-sway center-hole design that maintains fastener alignment even under vibration. A tight 0.1 mm gap control around the center hole helps prevent tilting, which is especially helpful for high-vibration applications like engine mounts, suspensions, and other critical joints.

Key design highlights

• 0.1 mm gap control around the center hole for stable fastener alignment
• 15° chamfer at the bottom to improve weld fill and seat
• FEA-optimized edge thickness enhances tear-out resistance by roughly 150%
• Four-piece kit ready for multiple mounting points

Premium material and precise processing

The base steel is acid-washed and tension-leveled for flatness better than 0.1 mm per meter, reducing distortion. Residual stress is lowered by ~40% through stress-relief annealing at 650°C, while hydrogen content stays under 2 ppm via vacuum degassing, contributing to cleaner welds and greater consistency.

• Flatness < 0.1 mm/m to minimize warp
• Hydrogen content controlled below 2 ppm
• 40% reduction in residual stress after annealing
• Zinc-free formula to minimize fumes and spatter

Welding performance and compatibility

Designed for real-world welding, these tabs resist wear while preserving base-metal strength after welding. They are compatible with common processes and materials, enabling versatile use across projects.

• HV130-150 hardness strikes a balance between toughness and workability
• Works with MIG or TIG using ER70S-6 wire
• Laser-cleaned surfaces reduce porosity for cleaner welds
• Low-silicone formulation cuts spatter by about 30%

Ideal applications

These tabs shine in high-impact, critical joints such as trailer hitches, suspension brackets, rock crawler frames, hydraulic press frames, and marine brackets. The pickling process delays rust up to three times longer than untreated steel in wet environments, and a primer can extend protection even further.