95W-Ni-Fe Tungsten Alloy Blank Ball | Counterweight & Sealing Ball

Zhuzhou Jiuding Metal Technology Co., Ltd. 95W-Ni-Fe Tungsten Alloy Blank Ball is a high-density, high-rigidity unpolished tungsten sphere designed for industrial counterweight calibration, mechanical sealing, vibration damping and gravity weighting applications. Produced by mature powder metallurgy pressing and high-temperature liquid-phase sintering process, this 95% tungsten-grade blank ball strictly complies with Mil-T-21014 US military standard, ASTM B777-99 / ASTM B777-15 (R2020), Chinese GB national quality standards and GB/T 1804-2000 dimensional tolerance specification. As a premium blank-state tungsten alloy sphere, it features ultra-high density, uniform structure, excellent compression resistance and stable gravity performance, serving as an ideal eco-friendly substitute for traditional steel, iron and lead balls for industrial weighting and sealing structures.

With a stable density of17.75–18.35 g/cm³, 95W-Ni-Fe tungsten blank balls deliver significantly higher specific gravity than conventional metal balls, enabling precise gravity configuration in limited installation space. The integral sintered blank structure provides outstanding surface compactness and structural stability, ensuring reliable sealing tightness and long-term balancing stability. This product supports two optional surface states: Sintered and Polished, covering original sintered blank surface and high-precision polished smooth surface to fit different usage and assembly standards. Full custom size service is available, with customizable diameters and dimensional tolerances to satisfy non-standard industrial requirements. Available in two surface states: Sintered and Polished, covering original sintered blank status and high-precision polished finished status to meet different assembly and usage requirements. We support full-size customized production with customizable diameters and dimensional tolerances for non-standard specifications. Completely lead-free and environmentally friendly, the product fully meets RoHS and REACH global environmental requirements, widely applicable for industrial counterweight systems, mechanical sealing assemblies and vibration stabilization structures.

Core Product Advantages of 95W-Ni-Fe Blank Balls

95W-Ni-Fe tungsten alloy blank balls adopt optimized tungsten-nickel-iron ratio and one-time sintering forming technology. The blank unprocessed state retains complete structural integrity and high material density, offering irreplaceable advantages for counterweight and sealing scenarios:

• Ultra-High Density for Precision Counterweight: High specific gravity realizes accurate weight matching in tiny structural spaces, effectively optimizing equipment center of gravity, reducing structural volume and realizing miniaturized lightweight design of mechanical equipment.

• Excellent Sealing Stability: Dense and uniform sintered structure with no internal pores or gaps. The blank spherical surface provides stable contact stress, ensuring reliable sealing performance for fluid, gas and pressure sealing systems.

• Superior Compression & Deformation Resistance: High structural rigidity and compressive strength, resistant to extrusion deformation and fatigue damage under long-term high pressure and mechanical impact, maintaining stable sealing and balancing effect.

• Effective Vibration Damping Performance: High mass inertia absorbs and suppresses mechanical micro-vibration and operational resonance, improving equipment running stability and reducing structural noise and vibration wear.

• Good Machining Reserve Performance: Standard blank ball size allows subsequent fine grinding, polishing and precision sizing processing, supporting customized tolerance and surface requirements for diverse precision equipment.

• Strong Environmental Adaptability: Low thermal expansion coefficient, excellent corrosion and oxidation resistance, stable physical and chemical properties in high-temperature, high-pressure and humid industrial working conditions.

• Eco-Friendly & Global Compliance: Non-toxic and lead-free material formula, fully compliant with international environmental protection standards, suitable for high-standard industrial and civil equipment supporting applications.

Product Performance Features

• Accurate Gravity Balancing: Uniform density distribution ensures consistent single-ball weight and batch stability, realizing high-precision dynamic balance and static counterweight calibration.

• Reliable Mechanical Sealing: High spherical roundness and dense surface structure ensure tight fitting and stable sealing performance, effectively preventing medium leakage in mechanical sealing assemblies.

• Long Service Life & Wear Resistance: Integral sintered metallurgical structure with excellent wear resistance and impact resistance, no loose particle shedding or performance attenuation during long-term cyclic operation.

• Flexible Secondary Processing: Blank forming state reserves sufficient machining allowance, supporting precision grinding, surface treatment and dimensional customization to meet diverse assembly needs.

• Strict Batch Consistency: Standardized powder metallurgy production ensures stable density, hardness and spherical precision for each batch, supporting large-scale standardized matching and assembly.

Executive & Testing Standards

Executive Standards: Mil-T-21014 (US Military Tungsten Heavy Alloy Specification), ASTM B777-99 / ASTM B777-15 (R2020), Chinese GB National Product Quality Standards, GB/T 1804-2000 General Dimensional Tolerance Standard (equivalent to ISO 2768-1).
Surface Condition: Sintered / Polished, optional according to customer drawings and technical requirements.
Customization Capability: Support custom diameter, special size and customized tolerance production, all custom dimensions strictly comply with GB/T 1804 precision standards.
Inspection Certificate: Support EN 10204 3.1 material inspection certificate, providing official factory test reports with full material and mechanical data traceability.

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. All blank ball dimensional tolerances and spherical errors strictly follow GB/T 1804-2000 standard requirements.

95W-Ni-Fe Blank Ball Standard Technical Parameters

Parameter Note: All mechanical data are tested under standard sintered blank state, fully compliant with Mil-T-21014 and ASTM B777 industrial standards, ensuring authentic and traceable performance data for counterweight and sealing applications.

95W-Ni-Fe Tungsten Alloy Applications

Relying on ultra-high density, excellent compression resistance, compact structure and stable mechanical properties, Zhuzhou Jiuding Metal Technology Co., Ltd.’s 95W-Ni-Fe tungsten blank balls are widely used for industrial counterweight matching and mechanical sealing scenarios:

• Industrial Mechanical Counterweight: Precision equipment gravity balancing parts, mechanical arm counterweight balls, automation equipment weighting components, effectively optimizing mechanical operation stability.

• Mechanical Sealing Systems: Fluid valve sealing balls, pipeline pressure sealing components, hydraulic and pneumatic equipment sealing core parts, ensuring long-term leak-proof operation.

• Vibration Damping & Stabilization: High-speed rotating equipment damping counterweights, reciprocating mechanical vibration reduction components, reducing equipment jitter and operational noise.

• Oil & Gas Drilling Industry: Downhole tool weighting balls, drilling equipment gravity balancing parts, adapting to high-pressure and complex downhole working environments.

• Precision Instrument Equipment: Optical instruments, detection equipment gravity calibration balls, ensuring high-precision and stable operation of precision devices.

• Custom Secondary Processing Parts: Used as blank raw materials for precision grinding, polishing and sizing, supporting customized high-precision tungsten sphere finished parts for various industries.

Production & Quality Assurance

All 95W-Ni-Fe tungsten alloy blank balls are manufactured through professional powder metallurgy pressing and high-temperature sintering processes, fully compliant with Mil-T-21014 military specifications, ASTM B777-99 industrial standards and GB/T 1804-2000 dimensional tolerance standards. Zhuzhou Jiuding Metal Technology Co., Ltd. implements full-process quality control including raw material proportioning, pressing forming, sintering parameter monitoring and finished product performance inspection, ensuring uniform density, stable structure and consistent mechanical performance of every blank ball.

To meet global high-standard procurement demands, we can provide complete qualification documents upon request, including third-party material test reports, official COA (Certificate of Analysis),, factory inspection certificates and EN 10204 3.1 materialcertificates and EN 10204 3.1 inspection certificates inspection certificates. Our factory holds ISO9001, ISO45001, ISO18001 and ISO13485 international system certifications. We support bulk standard supply, custom dimensional processing, Sintered/Polished surface finishing, sintered/polished surface customization, custom dimensional processing and personalized OEM & ODM servicesservices for counterweight and sealing industry applications.