Tungsten nail sinker is a fishing tool crafted from metal tungsten as the primary material, processed into a slender needle-like shape, and categorized as a subset of "sinkers" in fishing accessories. Its core feature leverages tungsten’s high density (approximately 19.3 g/cm3), achieving significant weight in a small volume while optimizing hydrodynamic performance post-entry into water.
Compared to iron sinker: 1) Tungsten nail sinker has a higher specific gravity, resulting in a smaller volume at the same weight, reducing wind resistance during casting; 2) Tungsten nail sinker exhibits better chemical stability at room temperature, with superior corrosion and oxidation resistance, making it suitable for saltwater use, whereas iron sinker rusts easily, with surface oxidation altering its weight over time in water; 3) Tungsten nail sinker is more expensive.
The body of tungsten nail sinker is a slender cylinder, resembling a sewing needle or thin nail. Its tip is typically conical or pyramidal, while the tail features a circular hanging hole for attaching the main line or leader. Some premium models include barbs or spiral patterns at the tail to prevent line slippage.
Due to its high density, small volume, corrosion resistance, and eco-friendliness, needle-shaped tungsten alloy sinker is versatile across fishing scenarios. In sea fishing, its saltwater corrosion resistance and rapid sinking speed allow it to penetrate mid-to-upper water layers and reach the bottom quickly. In fast-current fishing, the needle shape easily embeds into sediment, stabilizing the rig against water flow. It is also ideal for water bodies with high environmental standards.
Also known as Tungsten Nail Sinker, it is produced using powder metallurgy and injection molding techniques. Powder metallurgy, a primary method for preparing tungsten alloys, involves mixing tungsten powder with other metal powders and processing through a series of steps to yield the final tungsten alloy sinker.
