Non-Magnetic Tungsten Heavy Alloy Watch Counterweight | 18.5±0.15g/cm³ Custom Watch Weight Parts

Product Introduction

Produced by Zhuzhou Jiuding Metal Technology Co., Ltd., this Non-Magnetic Tungsten Heavy Alloy Watch Counterweight is a professional high-density weighting component specially developed for high-end mechanical watches, fashion quartz watches and customized luxury watch accessories. Adopting premium non-magnetic tungsten nickel copper alloy material with precise density of18.5±0.15 g/cm³, it features ultra-high specific gravity, stable physical performance and zero magnetism, perfectly solving the problems of insufficient weight, hollow floating feeling and unstable balance of traditional watch stainless steel and copper counterweights.

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.

Material & Precise Technical Specifications

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

Product Classification & Application Features

1. Watch Grain Counterweight

Custom tiny high-density tungsten weight grains for watch internal filling and local weighting. With ultra-small volume and super weight, it effectively improves the solid hand feel of hollow watch dials and movements, avoiding light and floating wearing experience. Non-magnetic design will not affect the internal precision parts of the watch, suitable for all kinds of thin and light luxury watch models.

2. Watch Case Counterweight

Flat and special-shaped tungsten weighting plates customized for watch case inner cavity. High-density material greatly increases the overall weight of the watch case, simulating the heavy texture of precious metal watches. The flat and smooth fit design ensures close assembly with the watch case without gaps, improving the overall grade and texture of finished watches. Stable density ensures consistent weight of each batch of finished watches.

3. Watch Bezel Counterweight

Arc and ring-shaped tungsten balance weights tailored for watch bezels. Through precise dynamic balance calibration, it optimizes the overall gravity balance of the watch, makes wearing fit and stable, and improves the comfort of wearing and the sense of high-end quality. The non-magnetic and corrosion-resistant properties ensure long-term stable operation of the watch without deviation or failure caused by environmental factors.

Core Product Advantages

1. Ultra-High Density, Small Volume & Large Weight

With a fixed density of 18.5±0.15g/cm³, far higher than stainless steel and brass materials, tungsten alloy can achieve ideal heavy texture in a very small installation space. It perfectly solves the lightweight defect of thin and hollow watches, greatly improving the high-grade solid metal hand feel of finished watches.

2. 100% Non-Magnetic, No Movement Interference

Different from magnetic tungsten nickel iron materials, our W-Ni-Cu watch special alloy is completely non-magnetic. It will not produce magnetic adsorption and interference on watch movements, gears and precision electronic components, ensuring accurate travel time and long-term stable operation of precision watches.

3. High Stability & Wear Resistance

Tungsten heavy alloy features a low thermal expansion coefficient, outstanding oxidation resistance, and superior sweat corrosion resistance. It effectively avoids deformation, discoloration and weight loss during long-term wear and daily use. Permanent stable weight and dimensional accuracy guarantee long-term consistent quality for finished watch products.

4. High Precision Custom Machining

Supported by professional precision CNC machining equipment, we realize high-precision customization of various irregular, arc, thin and tiny watch weighting parts. Strict tolerance control ensures perfect assembly fit with watch cases, bezels and internal structures. Support sample proofing, small-batch trial production and large-scale mass stable supply.

5. Eco-Friendly & Export Compliant

Completely lead-free and non-radiative, our tungsten watch counterweights fully comply with global RoHS and REACH environmental standards. Safe for direct skin contact and long-term wearable device use, they meet strict export certification requirements for European, American and international watch markets.

Application Scenarios

High-end mechanical watches, luxury quartz watches, fashion customized watches, hollow thin watch weighting modification, watch brand supporting accessories, cross-border watch parts wholesale, high-precision wearable device balance components.

Factory Strength & Service

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