Non-magnetic high-density tungsten alloy watch counterweight

Our tungsten watch counterweights cover full-scene watch matching parts, including watch grain weights, watch case inner counterweights and watch bezel balance weights. Manufactured by vacuum powder metallurgy forming and high-precision CNC finishing, each part features uniform density, no internal pores, smooth burr-free edges and high dimensional consistency. All products are lead-free, eco-friendly, sweat-corrosion resistant and RoHS & REACH compliant, completely replacing traditional toxic lead weights. We support full custom processing according to customer drawings, suitable for mass production of brand watches and personalized custom watch accessories.

We adopt standardized non-magnetic tungsten heavy alloy exclusive for watch precision weighting, with strict density tolerance and stable non-magnetic performance, fully adapting to high-precision watch assembly standards:

• Core Material: Non-magnetic W-Ni-Cu tungsten heavy alloy (watch professional grade)

• Fixed Density: 18.5±0.15 g/cm³

• Magnetic Property: 100% non-magnetic, no magnetic interference with watch movement, ensuring precise travel time

• Processing Standard: Customizable size, thickness, radian and appearance according to customer watch design drawings

• Applicable Parts: Watch inner grain counterweight, watch case bottom weight block, watch bezel balance weight, special-shaped watch weighting inserts

• Surface Treatment: Fine polishing, matte sandblasting, precision flat grinding, electroplating base treatment, laser marking

• Physical Performance: High hardness, wear-resistant, anti-oxidation, low thermal expansion coefficient, long-term size and weight stability

• Environmental Certification: Lead-free, non-toxic, RoHS & REACH compliant, safe for long-term wearable device application

1. Watch Grain Counterweight
These are custom tiny high-density tungsten weight grains designed for internal filling and local weighting of watches. Featuring ultra-small size and high specific gravity, they effectively enhance the solid hand feel of hollow watch dials and movements, eliminating the light, floating sensation during wear. The non-magnetic design will not interfere with the watch's internal precision components, making it suitable for all types of thin and light luxury watch models.

2. Watch Case Counterweight
Flat and specially-shaped tungsten weighting plates customized for the inner cavity of watch cases. The high-density material greatly increases the overall weight of the watch case, replicating the heavy texture of precious metal watches. The flat, smooth design enables a gap-free close fit with the watch case during assembly, elevating the overall grade and texture of the finished watch. The stable density ensures consistent weight across every batch of finished products.

3. Watch Bezel Counterweight
Arc and ring-shaped tungsten balance weights are tailor-made for watch bezels. Through precise dynamic balance calibration, they optimize the overall gravity balance of the watch, deliver a comfortable and stable fit during wear, and boost both wearing comfort and the high-end quality feel. Their non-magnetic and corrosion-resistant properties guarantee long-term stable operation of the watch, preventing deviation or failure caused by environmental factors.

1. Ultra-High Density, Small Volume, High Weight Capacity
With a fixed density of 18.5±0.15g/cm³ that is far higher than stainless steel and brass, tungsten alloy can deliver the ideal heavy texture even in a very limited installation space. It perfectly resolves the lightweight flaw of thin and hollow watches, greatly enhancing the premium solid metal hand feel of finished timepieces.

2. 100% Non-Magnetic, No Movement Interference
Unlike magnetic tungsten-nickel-iron materials, our W-Ni-Cu specialty alloy for watches is completely non-magnetic. It will not generate magnetic adsorption or interference with watch movements, gears and precision electronic components, guaranteeing accurate timekeeping and long-term stable operation of precision watches.

3. High Stability & Wear Resistance
Tungsten heavy alloy has a low coefficient of thermal expansion, excellent oxidation resistance, and outstanding sweat corrosion resistance. It effectively prevents deformation, discoloration, and weight loss during long-term wear and daily use, while its permanently stable weight and dimensional accuracy ensure consistent long-term quality for finished watches.

4. High Precision Custom Machining
Backed by professional precision CNC machining equipment, we deliver high-precision custom processing for a wide range of irregular, curved, thin and miniature watch weight components. Strict tolerance control guarantees a perfect assembly fit with watch cases, bezels and internal structures. We support sample prototyping, small-batch trial production and stable large-scale mass supply.

5. Eco-Friendly & Export Compliant
Completely lead-free and non-radioactive, our tungsten watch counterweights fully conform to the global RoHS and REACH environmental standards. They are safe for direct skin contact and long-term use in wearable devices, and meet the strict export certification requirements for the European, American and other international watch markets.

As a professional tungsten alloy manufacturer based in Zhuzhou, known as China’s tungsten capital, Zhuzhou Jiuding Metal Technology boasts complete powder metallurgy production lines and precision CNC deep processing workshops. All watch counterweights are sintered and processed independently in our own factory, with strict batch-to-batch quality inspection and stable density tolerance. We offer one-stop customized services ranging from drawing confirmation and sample fabrication to mass delivery, and can provide complete material certificates and test reports, supporting OEM and ODM cooperation for global watch brands.