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Brass Balls are precision copper-zinc alloy spheres used when buyers need a balance of corrosion resistance, electrical behavior, machinability, low friction, non-magnetic performance, and a bright yellow brass appearance. Compared with pure copper balls, brass balls normally provide higher strength and better wear behavior. Compared with carbon steel or chrome steel balls, brass balls are non-ferrous, non-magnetic, more corrosion resistant in many practical environments, and easier to machine.

For industrial buyers, brass balls are especially useful in valves, pumps, switches, electrical devices, safety components, heating units, appliances, furniture rails, automotive assemblies, and petrochemical equipment. They are not intended to replace hardened bearing steel balls in high-load or high-speed fatigue-critical bearing applications, and they should be checked carefully before use in aggressive chemical or seawater environments.

Material Selection & Technical Positioning

Brass is a copper-zinc alloy. SDBALLS brass balls are commonly supplied in C26000, C27000, C28000 or equivalent grades, depending on diameter, availability, production route, and customer specification. The correct product positioning is not simply decorative brass balls; it is precision non-ferrous alloy balls for conductive, corrosion-resistant, low-friction, and assembly-related applications.

Brass balls should be recommended when the buyer needs better mechanical strength than pure copper while still requiring non-magnetic behavior, conductivity, machinability, and practical corrosion resistance. If maximum conductivity is required, pure copper balls may be more suitable. If high wear resistance or seawater performance is critical, phosphor bronze, aluminum bronze, stainless steel, ceramic, or other materials may be recommended after application review.

Buyer Requirement	Recommended Direction	Selection Note
Good conductivity plus better strength than copper	Brass balls	Suitable for many electrical devices, switches, contacts and mechanical components
Maximum electrical / thermal conductivity	Pure copper balls	Copper provides higher conductivity but is softer than brass
Higher wear resistance in copper alloy family	Phosphor bronze or aluminum bronze balls	Use when wear, fatigue or higher mechanical strength is more important
High precision bearing performance	Chrome steel or 440C stainless steel balls	Use hardened materials for high-load and high-speed bearing applications
Strong corrosion resistance in wet or hygienic environments	316/316L stainless steel or ceramic balls	Recommended when brass compatibility is uncertain
Decorative yellow metal appearance	Polished brass balls	Confirm finish, oxidation protection, and packing requirements

Especificações técnicas

Parameter	Typical Content for Brass Balls
Material	Brass alloy, commonly C26000 / C27000 / C28000 or equivalent
Diâmetro	1.0 mm – 150.0 mm; custom sizes by confirmation
Grau de Precisão	G100, G200, G500, G1000 or application-specific commercial grade
Dureza	Typical HRB 75-95 depending on material grade and processing condition
Densidade	Approx. 8.49 g/cm3
Young’s Modulus	Approx. 110 GPa
Resistência à tracção	Approx. 500-600 MPa reference range; varies by grade and condition
Magnetismo	Non-magnetic
Condição da superfície	Passivated, polished, bright finish, cleaned, oiled or customized
Electrical Conductivity	Good electrical conductivity; lower than pure copper but suitable for many conductive components
Resistência à corrosão	Good resistance in ambient air, water, fuel oil, gasoline, kerosene, alcohol and many non-oxidizing environments; chemical compatibility must be confirmed for acids, ammonia, seawater, sulfides, and aggressive media
Aplicações típicas	Special valves, industrial pumps and valves, electronic devices, safety switches, heating units, appliances, furniture rails, automotive and petrochemical applications
Documentation	Material certificate, inspection report, RoHS / third-party testing where required

Chemical Composition / Material Composition

The following composition ranges are reference values for common brass ball materials. Final composition should follow the agreed material standard, purchase order, drawing, and material certificate.

Nota	Cu %	Zn %	Pb % Max	Fe % Max	Typical Positioning
C26000	68.50-71.50	Balance	0.07	0.05	70/30 cartridge brass; good formability, corrosion resistance and conductivity
C27000	63.00-68.50	Balance	0.09	0.07	65/35 yellow brass; widely used for industrial and decorative brass components
C28000	Approx. 59.00-63.00	Balance	As specified	As specified	60/40 brass; confirm exact specification before quotation

International Grade Equivalents

EUA	China	Germany	France	Reino Unido	Italy	Russia	Japan
C26000	H70	2.0265 / CuZn30	CZ106	P-CuZn30	L70	L70	C2600
C27000	H65	2.0335 / CuZn36	CZ107	P-CuZn35	L63	L63	C2700
C28000	H62	2.0360 / CuZn40	CZ109	P-CuZn40	L60	L60	C2800

Performance & Corrosion Resistance

Brass balls provide good practical corrosion resistance in ambient air, water, fuel oil, gasoline, kerosene, alcohol, dry carbon dioxide, and many non-oxidizing environments. They also offer good electrical conductivity, low friction, and non-magnetic behavior, making them suitable for electronic devices, switches, valve components and mechanical assemblies.

Application compatibility should still be confirmed before use. Brass can be sensitive to some acids, ammonia, sulfides, strong oxidizing chemicals, and certain chloride or seawater environments depending on alloy, temperature, concentration, and service conditions. For continuous seawater, high chlorine exposure, hygienic equipment, or aggressive chemicals, stainless steel, bronze, ceramic, titanium or other special materials may be more suitable.

Performance Factor	Brass Ball Positioning	Buyer Note
Condutividade elétrica	Bom	Suitable for many conductive components, lower than pure copper
Mechanical strength	Better than pure copper	Useful when copper is too soft for the assembly
Usinabilidade	Bom	Suitable for some drilled, modified or secondary-processed parts after confirmation
Resistência ao desgaste	Moderate	Not a substitute for hardened chrome steel in high-load bearing use
Magnetismo	Non-magnetic	Useful for electrical and instrument applications
Resistência à corrosão	Good in many practical environments	Verify media compatibility for acids, ammonia, sulfides, seawater and aggressive chemicals
Surface appearance	Bright yellow brass color	May oxidize or tarnish; specify polishing and protective packing if appearance is critical

Applications & Application Fit

Brass balls are best used where buyers need a non-ferrous metal ball with good corrosion resistance, conductive behavior, smooth motion, and practical mechanical strength. They are especially suitable for valve, pump, electronic, switch, appliance, furniture hardware, automotive, and petrochemical applications when the environment is compatible with brass.

Aplicativo	Fit Level	Why It Fits	Buyer Note
Special valves / check balls	Very good	Low friction, corrosion resistance, non-magnetic metal material	Confirm media, pressure, sealing and wear condition
Bombas e válvulas industriais	Very good	Good resistance in many water, fuel and non-oxidizing environments	Confirm chemical compatibility before production
Electronic devices / conductive parts	Very good	Good conductivity and non-magnetic performance	Confirm contact pressure, finish and conductivity requirement
Safety switches / tilt switches	Very good	Stable movement, conductivity and low friction	Confirm grade, surface cleanliness and switch design
Heating units and appliances	Bom	Good corrosion resistance in ambient and humid environments	Confirm temperature and media exposure
Furniture rails / sliding mechanisms	Bom	Smooth movement and low friction with attractive brass appearance	Confirm load, noise and wear expectations
Componentes automotivos	Bom	Compatible with many fuel-related and mechanical assemblies	Confirm fuel, oil and temperature conditions
Petrochemical equipment	Application-dependent	Can suit selected fuel/oil environments	Chemical compatibility review is required
High-speed precision bearings	Limited	Brass is not hardened bearing steel	Use AISI 52100 or 440C when fatigue performance is required
Aggressive acid / ammonia / uncertain seawater exposure	Not recommended without review	Brass can be unstable in some media	Consider stainless steel, bronze, ceramic or titanium alternatives

Material Selection Guide

Material Option	Typical Strength	Limitation	When to Recommend
Brass balls	Conductive, non-magnetic, better strength than copper, good corrosion resistance, low friction	Not as conductive as pure copper; not for high-load bearings or all chemical media	Valves, pumps, switches, electronics, appliances, furniture rails, petrochemical uses
Pure copper balls	Maximum electrical and thermal conductivity, soft and easy to machine	Lower strength and wear resistance than brass	Electrical, thermal, decorative and easily machined components
Phosphor bronze balls	Better wear resistance, fatigue strength and corrosion resistance than many brass options	Higher cost and lower conductivity than copper	Special valves, pumps, marine-adjacent hardware and wear-related mechanisms
Aluminum bronze balls	Higher strength and wear resistance among copper alloys	More specialized material and cost	Heavy-duty valve and mechanical applications after confirmation
Stainless steel balls	Better corrosion resistance for wet, hygienic or chemical applications	Lower conductivity than brass and copper	Food, medical, chemical, humid or corrosion-sensitive environments
Chrome steel balls	High hardness and bearing fatigue performance	Magnetic and not corrosion resistant	Precision bearings, motors, high-load rolling assemblies

Manufacturing & Process Control

Brass ball production requires controlled forming, sizing, grinding, polishing, cleaning, passivation or surface protection, and packing. Because brass is softer than hardened steel and has visible surface appearance requirements, process control should protect both dimensional consistency and surface quality.

• Raw material confirmation according to agreed brass grade or buyer drawing.
• Cold forming and sizing process controlled for diameter and spherical consistency.
• Grinding or lapping selected according to required grade and application tolerance.
• Polishing and cleaning controlled for bright appearance, smooth movement and low friction.
• Passivated or protective surface condition available when required for storage and service stability.
• Custom sizes, special surface finishes, modified balls, drilling or OEM packing can be discussed according to drawing and sample approval.

Quality Control & Inspection

For brass balls used in valves, switches, pumps, instruments, electronics and appliances, quality control should focus on material consistency, diameter, grade, roundness, surface finish, cleanliness, corrosion-related appearance and packing protection.

Inspection Item	Purpose
Diâmetro e tolerância	Confirm fit with valve seats, switches, rails, instruments and assemblies
Roundness / grade	Support smooth rolling, stable switching and consistent mechanical response
Surface appearance	Check scratches, dents, tarnish, stains, polishing consistency and visible defects
Material confirmation	Verify brass grade or equivalent material requirement
Hardness when required	Confirm process condition and mechanical performance range
Chemical compatibility discussion	Reduce risk in fuels, water, petrochemical and appliance environments
Packing inspection	Protect brass surface during storage, export handling and long-distance shipment
Documentation	Inspection report, material certificate, RoHS or third-party testing according to project needs

Packing Options

Brass balls may be ordered for functional assemblies or appearance-sensitive applications. Packing should be selected according to ball diameter, surface finish, shipment distance, storage time, and customer inspection standard.

Packing Option	Suitable For	Notes
Small plastic bags / bottles	Samples, small-size balls, electronics, switch and accessory projects	Easy counting and handling
Cartons with inner bags	General export supply	Common economical packing for bulk orders
Pails or drums	Industrial bulk supply	Suitable for larger quantity and repeated production use
Palletized export packing	Heavy shipments and distributor stocking	Improves handling and warehouse control
Protective / anti-tarnish packing	Bright polished or decorative brass balls	Recommended when appearance is critical
Customized OEM labeling	Brand, batch, material, size and quantity identification	Useful for distributors and OEM production lines

How to Specify for Quotation

To quote brass balls accurately, please confirm the following information:

• Material grade or equivalent standard, such as C26000, C27000, C28000, H70, H65, H62, C2600, C2700 or C2800.
• Diameter in mm or inch and required tolerance / precision grade.
• Required surface finish, such as passivated, polished, bright finish, cleaned, oiled, anti-tarnish packing or decorative finish.
• Application details, including valve, pump, electrical device, safety switch, heating unit, appliance, furniture rail, automotive or petrochemical use.
• Working environment, including water, steam, fuel oil, gasoline, kerosene, alcohol, chemicals, seawater, ammonia or other media.
• Whether drilling, machining, special holes, flattening, plating or secondary processing is required.
• Quantity, packing method, labeling requirement, destination port, trade term and requested lead time.
• Inspection documents, material certificate, RoHS, third-party testing or sample approval requirements.

Technical FAQ

Q: What are brass balls made of?

A: Brass balls are made from copper-zinc alloys. Common grades include C26000, C27000 and C28000 or equivalent international grades such as H70, H65, H62, C2600, C2700 and C2800.

Q: Are brass balls magnetic?

A: No. Brass is a non-ferrous copper-zinc alloy and is generally non-magnetic, making brass balls suitable for many electrical, switch, instrument and non-magnetic mechanical applications.

Q: What is the difference between brass balls and copper balls?

A: Pure copper balls provide higher electrical and thermal conductivity and are softer. Brass balls usually provide better strength, better wear behavior and a bright yellow appearance, but lower conductivity than pure copper.

Q: Are brass balls corrosion resistant?

A: Brass balls provide good corrosion resistance in ambient air, water, fuel oil, gasoline, kerosene, alcohol and many non-oxidizing environments. Compatibility should be confirmed for acids, ammonia, sulfides, seawater and aggressive chemicals.

Q: Can brass balls be used in valves and pumps?

A: Yes. Brass balls are widely used in special valves, industrial pumps and valves, flow-control parts and related mechanical assemblies when the media and operating conditions are suitable.

Q: Can brass balls be used for electrical contacts or switches?

A: Yes. Brass balls provide good electrical conductivity, non-magnetic performance and low friction, making them suitable for many electronic devices, safety switches, tilt switches and conductive components.

Q: Can brass balls replace chrome steel balls?

A: Only in suitable applications. Brass balls are useful where corrosion resistance, conductivity, non-magnetic behavior and low friction are important. For high-load, high-speed or bearing-fatigue applications, AISI 52100 chrome steel balls or hardened stainless steel balls are usually more appropriate.

Q: What information is needed for a brass ball quotation?

A: Please provide material grade, diameter, grade or tolerance, surface finish, quantity, application, working environment, packing, inspection document requirement, destination and trade term.