CuSn5 / CuSn6 / CuSn8 TIN BRONZE

Phosphor Bronze Balls

Wear-resistant, non-magnetic phosphor bronze balls for marine hardware, electrical mechanisms, instruments, valves and low-friction assemblies.

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Phosphor Bronze Balls supplied by SDBALLS — PRODUCT REFERENCE / FINAL SPECIFICATION BY QUOTATION

PRODUCT OVERVIEW

What are phosphor bronze balls?

Phosphor bronze balls are copper-tin alloy spheres containing controlled phosphorus. The alloy family combines corrosion resistance, wear performance, fatigue strength and useful electrical conductivity.

CuSn5, CuSn6 and CuSn8 provide different balances of strength, formability and conductivity. The exact alloy and condition should be specified for marine, electrical and valve duty.

TECHNICAL SPECIFICATIONS

Start with measurable requirements.

Values below are product-family references. The quotation, drawing, agreed standard and inspection plan control the final supply specification.

Technical itemReference specification

MaterialCuSn5 / CuSn6 / CuSn8 phosphor bronze or agreed equivalent

Diameter Range1.5–150 mm reference range

Precision GradeG100–G1000 reference grades; machined parts by drawing

ToleranceControlled by the agreed precision grade, drawing or purchase specification

HardnessApprox. HRB 75–105, alloy and condition dependent

DensityApprox. 8.8–8.92 g/cm³

Surface FinishPolished, machined, plated or customer-approved condition

Roundness / SphericityControlled according to the agreed precision grade and inspection method

Temperature ResistanceApplication, load, atmosphere and material-grade dependent

Chemical ResistanceSuitable for many water, steam, oil and fuel services; acids and alkalis require review

PackagingBulk, small-quantity, container, bag, carton, export pallet or customized packing

MagnetismNon-magnetic

Special optionsHoles, threads, flats and custom machining by drawing

PRODUCT SELECTION GUIDANCE

Compare materials before substituting.

Material selection affects load, wear, corrosion, temperature, precision, service life and total program cost.

Material optionPrimary advantageLimitationBest fit

Phosphor bronzeWear, fatigue, corrosion and low-friction balanceHigher cost than common brassMarine, electrical and instrument mechanisms

BrassExcellent machinability and economyLower wear and fatigue performanceGeneral valves and decorative parts

Aluminum bronzeHigher strength and marine corrosion resistanceHarder machining and different conductivityHeavy-duty marine valves

316 stainlessBroad corrosion resistance and strengthDifferent friction and conductivity behaviorChemical and hygienic equipment

KEY PERFORMANCE FEATURES

Performance that purchasing teams can verify.

Wear & fatigue resistance

Tin-bronze structure supports repeated contact and sliding duty.

Marine corrosion behavior

Useful for water and marine hardware after exact alloy and medium review.

Non-magnetic conductivity

Suitable for selected electrical and instrument mechanisms.

Custom-machined options

Holes, threads and precision features can be coordinated from drawings.

TYPICAL APPLICATIONS

Specify the work the ball must perform.

Application names are starting points—not approval of universal suitability. Share the real medium, load, speed, pressure, temperature, life target and compliance needs.

Marine hardware

Water-contact mechanisms, controls and corrosion-resistant moving elements.

Electrical components

Switches, contacts and mechanisms requiring conductivity plus wear resistance.

Valves & instruments

Flow, dosing and precision mechanical components.

Low-friction assemblies

Guides, detents and sliding elements under compatible load.

Typical applications for Phosphor Bronze Balls — REPRESENTATIVE APPLICATION ENVIRONMENTS

QUALITY & DOCUMENTATION

Build the evidence into the purchase order.

Document requirements should be defined before quotation so the inspection method, sampling level, traceability and external testing can be planned correctly.

Material identity or alloy / ceramic grade verified against the agreed purchase specification
Diameter, tolerance and geometry inspected using the method appropriate to the ordered precision level
Hardness, density, wall thickness or coating hardness tested when applicable to the product
Surface condition, finish and visual limits checked against approved samples or drawings
Roundness / sphericity or roller geometry inspected when specified
Lot identification and batch traceability maintained through controlled records
Material certificates and inspection reports available when agreed before quotation
Third-party testing, compliance documents and customer inspection plans supported by agreement

PACKAGING OPTIONS

Protect precision through delivery.

Final packing depends on material, diameter, surface sensitivity, order weight, storage time and destination.

Anti-tarnish inner packing

Sealed bags or protective paper selected for copper-alloy surface preservation.

Small-lot containers

Labeled bags, vials or trays for prototypes, repair and distributor orders.

Cartons, pails & drums

Industrial packing selected by diameter, total weight and handling method.

Customer-specific packing

Counted quantities, private labels, export pallets and corrosion protection by agreement.

Supported formats: bulk packaging · small-quantity packaging · plastic containers · bags · cartons · export pallets · customized packaging.

SMALL QUANTITY & SAMPLE ORDERS

Validate before you scale.

SDBALLS Industry Corp. supports North American customers with sample quantities, prototype requirements, testing programs and specialty ball inquiries.

Provide alloy, condition, diameter, grade, medium, load, electrical need and machining drawing. Samples can validate wear, fit and corrosion behavior.

PrototypeTestingRepairR&DSmall batch production

Request Samples ↗Contact U.S. Support

PRODUCT FAQ

Answers for engineering and purchasing teams.

What is the difference between CuSn5, CuSn6 and CuSn8?

Tin content changes strength, spring behavior, formability and conductivity. Use the exact alloy standard required by the application.

Can phosphor bronze be used in seawater?

It performs well in many marine conditions, but exact alloy, flow, galvanic coupling, temperature and water chemistry require review.

Is phosphor bronze magnetic?

It is generally non-magnetic, which is useful in instruments and electrical mechanisms.

Can these balls be machined?

Yes. Drilling, threading, flats and custom geometry can be reviewed against a drawing and alloy condition.

Can you provide material certificates and inspection reports?

Yes. State the required certificate, inspection method, sampling plan and report format before quotation so documentation can be included in the supply plan.

Do you support samples and small-quantity orders?

Yes. SDBALLS Industry Corp. supports North American prototype, qualification, repair, R&D and small-batch requirements, subject to material, size and production availability.

CONTACT SDBALLS U.S.

Bring us the application and requirement.

Include product, material, size or shot size, grade, hardness, finish, quantity, packaging, application and required documentation for a faster quotation.

SDBALLS Industry Corp.Email: info@sdballs.usWhatsApp: +1 424 351 5470Website: www.sdballs.usNorth American Business Support