Customized High-Density Tungsten Alloy Rods (W-Ni-Fe / W-Ni-Cu)

Zhuzhou Jiuding Metal Technology Co., Ltd. Customized High-Density Tungsten Alloy Rods are premium lead-free precision balancing and weighting components engineered from high-purity W-Ni-Fe and W-Ni-Cu tungsten heavy alloy materials. Manufactured via mature powder metallurgy sintering and ultra-precision customized finishing processes, these rods fully comply with Mil-T-21014 US military specification, ASTM B777-99 / ASTM B777-15 (R2020) and ASTM B459-67 (Type Ⅱ & Ⅲ) industrial standards. Featuring ultra-high density, stable mechanical properties, low thermal expansion and excellent corrosion resistance, our customized tungsten alloy rods serve as an ideal eco-friendly replacement for traditional lead counterweights. Tailored for custom dimensional specifications, precision gravity calibration, dynamic balance adjustment, vibration stabilization and local radiation shielding, they are widely deployed in aerospace, automotive, medical equipment, precision machinery and industrial drilling industries.

Compared with conventional steel, iron and lead counterweight rods, Zhuzhou Jiuding Metal Technology Co., Ltd.’s customized high-density tungsten alloy rods deliver 2.3 times higher density than steel and 1.5 times higher density than lead. The superior high-specific-gravity design enables accurate weight configuration in limited installation spaces, effectively optimizes equipment center of gravity, suppresses operational resonance and micro-vibration, and greatly improves equipment running stability and overall service life. Adopting non-toxic alloy formulation, all customized products fully comply with RoHS and REACH global environmental standards, meeting international industrial upgrading and green manufacturing requirements.

Core Product Advantages of Custom Tungsten Alloy Rods

Adopting optimized tungsten alloy proportioning and mature liquid-phase sintering technology, Zhuzhou Jiuding Metal Technology Co., Ltd.’s customized high-density tungsten alloy rods feature uniform microstructure, consistent density distribution and excellent dimensional stability. Suitable for mass customization and batch production, our products deliver outstanding and irreplaceable comprehensive performance compared with traditional steel, iron and lead weighting rods:

• Ultra-High Density & Space-Saving: Density ranges from 16.85 g/cc to 18.85 g/cc, enabling concentrated weight output in narrow and confined structural spaces. It greatly simplifies mechanical structure design and realizes miniaturization and lightweight optimization of finished equipment.

• Lead-Free & Eco-Friendly: Non-toxic and harmless, fully compliant with RoHS, REACH and global environmental quality standards. It replaces hazardous lead materials, eliminating environmental pollution risks and improving product safety and market compliance.

• Stable Balancing Performance: High specific gravity and excellent mass inertia effectively restrain equipment swing and operational vibration, ensuring high-precision dynamic balance for high-speed rotating and reciprocating mechanical structures.

• Superior Mechanical Stability: High compressive strength, moderate hardness and excellent structural rigidity. No deformation, loosening or weight deviation occurs during long-term high-frequency operation, guaranteeing long-term stable balancing accuracy.

• Excellent Corrosion & Thermal Resistance: Inert chemical properties, strong oxidation resistance and low thermal expansion coefficient. It adapts to complex working environments of high temperature, humidity and chemical corrosion without performance attenuation.

• Full Customization & Excellent Machinability: Easy to cut, drill, grind and machine. Zhuzhou Jiuding Metal Technology Co., Ltd. provides one-stop customized services for special diameters, lengths, precision tolerances and surface treatments to fit diverse industrial assembly and structural requirements.

• Reliable Radiation Shielding: Superior X-ray and gamma-ray shielding capacity, widely applicable for local radiation protection of medical and industrial equipment.

Customized Rod Performance Features

• Precision Gravity Calibration: Uniform density distribution and strict dimensional tolerance ensure accurate weight matching, realizing zero-deviation gravity balance for precision equipment.

• Vibration Suppression & Stability Enhancement: High structural rigidity and mass inertia absorb micro-vibration during equipment operation, improving running smoothness and machining stability.

• Long Service Life: Wear-resistant, deformation-resistant and fatigue-resistant, maintaining stable balancing performance throughout the equipment service cycle with zero frequent replacement.

• Wide Environmental Adaptability: Stable physical and chemical properties, suitable for extreme working conditions such as high temperature, low temperature and high humidity.

• Strict Batch Consistency: Standardized powder metallurgy production ensures identical density, hardness and mechanical properties for each batch, supporting large-scale standardized assembly.

Executive & Testing Standards

Executive Standards: Mil-T-21014 (US Military Tungsten Heavy Alloy Specification), ASTM B777-99 / ASTM B777-15 (R2020), ASTM B459-67 (Type II & III), Chinese GB National Product Quality Standards.
Testing & Verification Standards: Alloy composition testing per ASTM B890-25 (WD-XRF spectrometry); compressive mechanical performance testing per ASTM E9-19 (R2025) / GB/T 7314-2017; density testing per ASTM B311; tensile strength and hardness testing per ASTM E8 / ASTM E18.

Full Alloy Grades & Technical Data

Mil-T-21014 / ASTM B459-67 Grade Mechanical Parameters

ASTM B777-99 Standard Specification (Metric & Imperial Unified)

Accurate Unit Conversion & Core Performance Reference: 114,000 PSI = 114 ksi ≈ 786 MPa. The mainstream 93W-Ni-Fe counterweight bar exhibits excellent compression resistance: 0.2% compressive yield strength of 850–950 MPa (123–138 ksi) and compressive breaking strength of 1600–1800 MPa (232–261 ksi), ensuring ultra-stable structural performance during long-term cyclic balancing operation.

Application of tungsten alloy

Benefiting from ultra-high density, eco-friendly formula and stable mechanical balancing performance, Zhuzhou Jiuding Metal Technology Co., Ltd.’s customized high-density tungsten alloy rods are widely used for precision gravity calibration, dynamic balance correction and operational vibration reduction across multiple high-end industries:

• Aerospace & Aviation: Aircraft component balancing, gyroscope gravity calibration, aerospace precision structural counterweights

• Automotive & Racing: Vehicle chassis balancing, racing car center-of-gravity optimization, vibration reduction parts

• Precision Machinery & CNC Equipment: High-speed rotating shaft balancing, long-overhang equipment vibration suppression, precision instrument gravity matching

• Medical Equipment: Medical instrument balancing, radiation shielding structural parts, compliant with medical-grade quality standards

• Oil Drilling & Industrial Equipment: Drilling tool weighting rods, downhole equipment counterweights, heavy machinery balancing components

• High-End Electronic & Sports Equipment: Precision electronic component gravity adjustment, professional sports equipment counterweight accessories

Production & Quality Assurance

Zhuzhou Jiuding Metal Technology Co., Ltd.’s customized high-density tungsten alloy rods are manufactured via professional powder metallurgy sintering and ultra-precision custom finishing processes, fully compliant with Mil-T-21014 military specifications, ASTM B777-99, and GB national quality standards. We implement strict full-process quality control, including raw material inspection, sintering process monitoring, precision custom machining and finished product full testing, ensuring stable density, accurate dimensions and consistent mechanical performance for every customized product.

To meet global high-standard procurement requirements, Zhuzhou Jiuding Metal Technology Co., Ltd. can provide complete qualification documents upon request, including third-party test reports, official COA (Certificate of Analysis) and factory inspection certificates. Our factory holds ISO9001, ISO45001, ISO18001 and ISO13485 international system certifications. We support military-grade, medical-grade and industrial-grade mass production, as well as personalized OEM & ODM customization services.