Copper Balls | Complete Product Parameters and Function Description (Foreign Trade Exclusive Full Version)

I. Product Introduction

Copper balls are mainly divided into two mainstream categories: pure copper balls and brass balls, which are high-end non-ferrous metal precision components made from high-purity copper alloy materials through precise cold heading, forging, mirror polishing, fine polishing, passivation, and anti-oxidation processing. The products have core characteristics such as high purity, round and regular spherical shape, smooth surface without defects, excellent electrical and thermal conductivity, corrosion resistance, non-magnetization, high plasticity, and advanced appearance texture, produced in strict accordance with international precision hardware manufacturing standards. The overall structure is dense and uniform, free of sand holes, pores, cracks, and deformation, with uniform dimensions and high interchangeability in batches. Special surface treatments such as polishing, gold plating, anti-oxidation, and anti-oxidation sealing oil can be customized according to customer requirements. Different from steel balls and iron balls, copper balls have unique metal physical properties and chemical stability, making them essential components in the fields of electrical conductivity, heat conduction, sealing, shock absorption, decoration, precision electronics, and equipment. They are widely used in global high-end precision manufacturing, electrical appliances, medical equipment, hardware decoration, and hydraulic and pneumatic industries, and belong to high-added-value export products.

II. Core Advantages and Features of the Product

• Superior electrical and thermal conductivity propertiesCopper material inherently possesses excellent electrical and thermal conductivity, with conductivity and thermal conductivity far exceeding steel and iron. Its resistance value is stable, and the electrical performance is uniform without degradation, meeting the stringent requirements of various precision electronic, electrical switch, and conductive connection equipment. It is the preferred material for precision conductive accessories.

• Corrosion and oxidation resistant, not easy to rust or discolorCopper alloy material has stable chemical properties, with excellent antioxidant, anticorrosive, and anti-discoloration capabilities. It is not easily oxidized and rusted, nor is it prone to blackening and corrosion in normal temperature air, humid environments, and mild acidic or alkaline conditions. It is suitable for long-term outdoor use and in humid working conditions, with a long service life.

• Smooth texture with excellent extensibilityHigh toughness, moderate hardness, and extremely high plasticity of copper balls, making them resistant to cracking, chipping, and minor deformation under impact or compression. Suitable for secondary processing such as stamping, bending, and shaping, and compatible with various precision assembly and fine-tuning conditions.

• Non-magnetic, anti-magnetic insulation, strong adaptabilityPure copper and brass materials are non-magnetic, completely non-magnetic and non-magnetic attracting, perfectly suitable for precision instruments, sensors, electronic equipment, and anti-magnetic equipment scenarios. They do not generate magnetic field interference, ensuring accurate equipment operation.

• Mirror-like high颜值, extremely decorativeProcessed with ultra-fine polishing technology, the ball surface is bright as a mirror, with uniform and transparent coloration, high-grade metallic texture, free from scratches, burrs, and defects. It combines practicality with decorative features, suitable for high-end hardware, craft decoration, and precision appearance accessories.

• Vibration and noise reduction, smooth operationThe copper material has a low friction coefficient and high spherical fit, with minimal resistance and vibration during rolling and sliding, extremely low noise, smooth operation without jamming or abnormal sounds, suitable for precision silent equipment conditions.

• High precision stability, high batch consistencyAdopting standardized precision production process, internal stress is fully released. The spherical roundness, size tolerance, and surface finish are strictly controlled throughout. The performance of the entire batch of products is highly unified, with strong adaptability for automated assembly, and can completely replace imported similar copper ball accessories.

• Safety and environmental protection, high compliance levelMaterial is pure without impurities or heavy metal leaching, compliant with RoHS and EU environmental standards, non-toxic and harmless, safe and stable, suitable for export of medical, food auxiliary equipment, and high-end consumer products, meeting the high-end compliance requirements of multiple countries.

Section 3: Main Material Classification and Performance Description (Comprehensive for Foreign Trade)

• H62 brass ball (high cost-performance main model)Standard mainstream copper material on the market, with balanced copper-zinc ratio, moderate hardness, excellent toughness, easy to process, and good anti-oxidation effect. It stands out in cost-performance, combining practicality with decorative properties. Widely used in hardware accessories, decorative parts, general electrical conductivity, and shock-absorbing and weight-reducing applications, it is a core material for export trade volume.

• H65/H68 High Purity Brass Balls (Precision Upgrade Model)Higher copper content, minimal impurities, purer material, superior surface luster, excellent electrical and thermal conductivity, stronger anti-oxidation and anti-color fading capabilities, suitable for precision electronics, instruments, high-end hardware, and precision transmission equipment, mainly targeting mid-to-high-end foreign trade markets.

• T2 Pure Copper Spheres (Cupronickel Spheres/High-end Conductive Version)High-purity copper material, copper content exceeding 99.9%, with excellent electrical and thermal conductivity, strong chemical stability, corrosion resistance, non-magnetic, and stable performance, specially suitable for stringent applications such as high-end electrical appliances, precision conductive components, medical equipment, and high-end scientific research instruments.

• Special Alloy Copper Balls (Customized Model)Containing high-end copper alloys such as phosphor bronze and beryllium copper, featuring ultra-high elasticity, high wear resistance, high conductivity, and fatigue resistance, suitable for high-end precision spring contacts, wear-resistant conductive accessories, and high-frequency precision equipment, capable of undertaking high-end customized export orders.

4. Precision Grade & Model Specification System

Precision GradeCovering full gradation of precision grades, including G16, G20, G28, G40, G60, G100, G200, covering ultra-high precision electronic grade, industrial precision grade, commercial decorative grade, capable of meeting different precision requirements for precision equipment, general industry, and decorative accessories.

Size specification range0.5mm - 50mm full specifications in stock, covering micro precision conductive copper balls, standard general-purpose copper balls, large-size counterweight decorative copper balls. Support non-standard special diameter, ultra-high precision tolerance, and special appearance process customization. Capable of handling small batch samples and medium to large batch foreign trade long-term orders.

Implementation StandardComply strictly with ISO 3290 and international non-ferrous metal precision processing standards, with strict control over dimensions, roundness, finish, and material composition throughout the process. Each batch can provide material inspection reports, factory quality inspection reports, and RoHS environmental reports, meeting global high-end foreign trade customs clearance, factory audit, and platform entry requirements.

Five, Overall Weight Parameters

Copper ball density is significantly higher than that of conventional steel and iron balls. The standard density of brass is 8.5g/cm³, while pure copper has a density of 8.9g/cm³. These balls are solid, integrally molded, with dense internal structures, free of pores and impurities. The weight of balls of the same specification is highly uniform, with extremely low batch errors. Micro copper balls have precise weight and even distribution of counterweights, suitable for miniature balancing and shock absorption in precision electronic equipment. Medium to large-sized copper balls are heavy and have an extremely stable center of gravity, ideal for high-end equipment for stable pressure, balancing correction, and heavy-duty decorative counterweights. All specifications of products can provide precise net weight per piece, number per kilogram, and packaging parameters, facilitating customer structural design, equipment selection, load calculation, foreign trade quotation, and packaging calculation.

6. Load-bearing and compressive properties

Copper spheres feature a regular spherical structure and uniform stress distribution, with a balance between material toughness and structural strength. They possess excellent static load-bearing, mild compression resistance, extrusion resistance, and impact resistance. Unlike hard steel balls, copper spheres are less prone to cracking, chipping, or pitting under pressure, exhibit moderate and controllable deformation, excellent resilience, and are less likely to deform or fail under long-term static loading.

High-precision miniature copper balls are suitable for precision electronic equipment under light load and low-pressure conditions, ensuring operational accuracy; conventional brass and pure copper balls can be used for medium to light industrial pressure-bearing, equipment support, and structural limiting applications; alloy copper balls, after strengthening treatment, significantly enhance their pressure and fatigue resistance, making them suitable for high-frequency reciprocating extrusion and continuous pressure-bearing conditions. Customized heavy-duty copper balls with specific materials, precision, and hardness can be provided according to the customer's equipment load requirements.

7. Power Source / Compatible Working Modes

Copper ballPure mechanical passive precision non-ferrous metal accessoriesNo built-in power structure required; no need for electricity, motors, fuel, pneumatics, or any external power source. The operation is fully dependent on the physical force of the equipment and the联动 of the mechanical structure, suitable for various precision, silent, and high-end automated equipment.

• Relying on its own gravity to complete actions such as weighting, stabilizing pressure, balancing, resetting, and descending, to stabilize the operation status of the equipment.

• Based on mechanical thrust, spring force, and fluid pressure to achieve precise rolling, sliding, positioning, locking, and sealing actions.

• Adaptable to various working conditions such as low-speed reciprocating motion of equipment, precise rotational transmission, static fixed bearing, high-frequency opening and closing sealing, etc.

• Zero energy consumption, zero noise, zero jamming, and low wear, supporting continuous 24-hour stable operation of high-end equipment.

Section 8: Power Description

Copper balls are non-powered precision mechanical components, without any electrical circuit, motor, or power transmission components.Zero power consumption, zero energy consumption, zero power loss throughout the processThe product is suitable for high-precision equipment, electronic appliances, and automation devices in the full power range, without increasing the energy consumption of the main equipment, without interfering with the power parameters of the equipment, and without affecting the precision and performance of the entire machine. Meanwhile, with its excellent conductivity, it can assist in stable power supply to the equipment, reduce energy consumption loss, and is compatible with various high-end energy-saving precision devices.

Chapter 9: Core Function Description

• Precision Conductive Connectivity FunctionHigh conductivity, stable resistance, and uniform power transmission, suitable for electronic switches, conductive contacts, and core circuit components, achieving precise circuit conduction and stable power transmission, compatible with various precision electrical equipment.

• High-efficiency thermal conductivity and heat dissipation functionHigh thermal conductivity and fast heat dissipation speed, can be used as thermal conduction, heat dissipation, and uniform heating accessories for equipment, quickly conducting the heat generated by the equipment operation, avoiding local high temperature accumulation, and optimizing the equipment's heat dissipation system.

• Precise weight balancing functionHigh-density self-weight is uniformly stable, which can accurately balance the equipment's center of gravity, counteract running vibrations, and suppress equipment sway displacement, significantly enhancing the smoothness of operation for precision instruments and high-end equipment.

• Silent rolling transmission functionSpherical smooth surface with low friction, rolling smoothly with extremely low noise and vibration, suitable for precision transmission and sliding auxiliary components, reducing equipment operating resistance and wear, compatible with silent precision equipment.

• Anti-magnetic precise positioning functionMagnetic-free characteristics eliminate magnetic interference, relying on high-precision spherical structure for precise positioning, limitation, and alignment of the equipment, ensuring the detection and operational accuracy of precision instruments and sensors.

• Precision sealed flow control functionHigh spherical fit and good sealing, suitable for small precision valves, pneumatic and hydraulic accessories, and micro pipelines, achieving precise fluid isolation, switching, and sealing without leakage or gaps.

• High-end decorative beautification functionMirror-polished original color, bright and transparent, with excellent antioxidant properties and color retention, suitable for high-end hardware, handicrafts, lighting, and luxury accessories, combining practicality with high-end decorative texture.

• Vibration damping, shock absorption, and voltage stabilization functionExcellent material toughness, effectively buffering equipment operation impact, reducing mechanical vibration, stabilizing equipment pressure, and extending the service life of high-end precision equipment.

Chapter 10: Recommended Uses & Applicable Industries (Focus on Foreign Trade)

• Precision Electronic Appliances IndustryMiniature switches, conductive contacts, connectors, sensors, precision circuit boards, and dedicated conductive copper balls for household electrical control components are core accessories for precision electronic equipment.

• Instrumentation scientific research industryTesting equipment, precision experimental equipment, optical instruments, intelligent instrument limit switches, counterweights, anti-magnetic, shock absorption accessories for specialized applications, ensuring accurate equipment operation.

• High-end hardware decoration industryLuxury hardware, lighting accessories, furniture hardware, metal crafts, decorative pieces, jewelry accessories, featuring high-visual metal texture for premium decorative settings.

• Hydraulic and Pneumatic Precision Valve IndustryMiniature precision ball valves, check valves, pneumatic valves, fluid control equipment seals, flow control, transmission core components, compatible with high-precision fluid control systems.

• Medical Equipment IndustrySmall medical equipment, sterile auxiliary devices, and testing medical accessories are made of environmentally friendly, non-toxic, corrosion-resistant, and easy-to-clean materials, meeting the matching standards of medical equipment.

• Communication Intelligent Device IndustryCommunication equipment, smart wearable devices, micro precision device balancing weights, conductive, shock-absorbing, voltage stabilization accessories, compatible with miniaturized high-end intelligent devices.

• Precision Mechanical Automation IndustryMiniature automation equipment, precision fixture accessories, miniature transmission devices, rolling, limit, and balancing components for silent machinery.

• High-end foreign trade accessory fieldTargeting high-end overseas markets such as Europe, America, Japan, and South Korea, compatible with mass export of high-end precision equipment, electronic appliances, and craft gifts. Relying on advantages of environmental protection, precision, and stability, meet the stringent procurement standards of high-end customers.

Chapter 11: Warranty and After-Sales Information

• Product warranty periodStandard indoor dry condition warranty is 12 months, anti-oxidation special treatment high-end copper ball warranty is 18 months. Warranty covers non-artificial damage, oxidation discoloration, performance degradation, and other quality issues during normal use.

• Rigorous quality control before shipmentOur products undergo dimensional accuracy inspection, roundness screening, surface smoothness test, material composition detection, and full inspection for surface defects, ensuring no deformation, scratches, pores, dimensional deviations, or non-standard materials, guaranteeing 100% defect-free delivery.

• Complete set of high-end foreign trade materials supportFree provision of Chinese and English material certificates, RoHS environmental test reports, factory quality inspection reports, dimensional accuracy parameter tables, customs compliance documents, fully compatible with the customs clearance, customer factory audit, and platform entry requirements of the high-end European and American markets.

• All-around Customized ServiceSupports non-standard sizes, ultra-high precision tolerances, special material ratios, mirror polishing, anti-oxidation sealing oil, gold and silver plating, etc. for special surface treatments. Capable of handling small batch trial orders and medium to large batch long-term fixed export orders.

• Exclusive foreign trade after-sales protectionFree replacement for factory defects, free adjustment for precision deviation, lifelong after-sales follow-up for process issues. Equipped with dedicated foreign trade follow-up personnel, full-process coordination for order production, packaging, delivery, and after-sales, efficiently resolving various issues for overseas customers.