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Our High Precision Tin Bronze Wire is meticulously engineered for critical elastic components that demand consistent performance under cyclic stress conditions.
Product Description
Tin-bronze wire is a high-precision alloy wire manufactured from a copper-tin alloy base through a series of refined processes, including vacuum melting, continuous extrusion, precision drawing, and annealing/finishing. It overcomes the limitations of standard pure copper wire—such as poor wear resistance, low fatigue strength, and susceptibility to oxidation and deformation—by utilizing a precise blend of tin and trace alloying elements to achieve an optimal balance of electrical conductivity, mechanical strength, wear resistance, and corrosion resistance. The material features a dense, uniform structure free from porosity and inclusions, with a smooth, burr-free surface and tightly controlled dimensional tolerances. Combining excellent ductility and plasticity, it serves as a core, versatile material for sectors such as mechanical manufacturing, electrical control systems, precision instrumentation, and new energy, effectively meeting diverse industrial requirements involving high-precision machining, high-frequency usage, and operation under complex conditions.
1. Superior Comprehensive Performance: Compared to standard brass or pure copper wires, this product balances high electrical and thermal conductivity with high tensile strength and excellent elasticity. It retains the stable electrical transmission properties of copper while significantly enhancing wear resistance, dimensional stability, and fatigue resistance. Suitable for complex operating conditions across various scenarios, its overall performance far exceeds that of ordinary copper wire.
2. Advanced Manufacturing & High Precision: Produced using an integrated precision wire-drawing and low-temperature annealing process, the wire features uniform gauge and consistent roundness. The surface is smooth—free from oxidation spots, scratches, or cracks—and manufacturing tolerances are strictly controlled. Eliminating the need for secondary grinding or finishing, it is ready for immediate use in downstream processes such as stamping, bending, cutting, and welding, resulting in minimal processing waste.
3. Exceptional Durability & Longevity: The alloy structure is highly stable and features inherent micropores for oil retention, providing a self-lubricating effect during operation that minimizes frictional loss and equipment wear. Additionally, it offers resistance to high temperatures, aging, oxidation, and corrosion, ensuring stable performance in harsh environments—including humid, high-temperature, outdoor, and salt-spray conditions—thereby significantly reducing maintenance and replacement costs.
4. Extensive Customization Options: With a comprehensive product range and specification coverage, we support both standard stock supply and non-standard customization. Parameters such as wire diameter, hardness, length, and temper (soft/hard state) can be tailored to client needs, accommodating requirements ranging from small-batch sampling and medium-batch processing to large-scale industrial procurement.
5. Ease of Assembly and Use: The wire boasts excellent ductility and flexibility, resisting breakage or deformation during bending, winding, or cutting. It offers superior performance in wire clamping, crimping, and welding, ensuring a precise fit during assembly and preventing issues like loosening or poor contact. It is ideally suited for automated assembly line processing.
1. Stable physical properties: Dense and uniform texture with compliant density; exhibits excellent tensile and yield strength, as well as high resistance to compression and impact; maintains structural stability under heavy-load conditions without loosening or fracturing.
2. Excellent electrical performance: Stable and balanced electrical and thermal conductivity with uniform resistance; operates without overheating or leakage and features low transmission loss; ensures precise, reliable electrical connections suitable for signal and current transmission in precision electrical components.
3. Outstanding wear resistance: Low coefficient of friction and effective alloy hardening; resistant to mechanical wear and repeated friction; minimal material loss during high-frequency reciprocating motion, making it an ideal material for elastic, wear-resistant components.
4. Superior weather and corrosion resistance: Excellent resistance to rust, oxidation, acids, alkalis, and salt spray; suitable for humid or corrosive environments such as marine, coastal, outdoor, and water treatment settings; maintains integrity without rusting or degrading during long-term use.
5. Excellent machinability: Exceptional plasticity, machinability, and weldability; easy to bend, form, and cut; compatible with various precision machining processes; ensures dimensional stability after forming with minimal spring-back.
6. Effective vibration and noise reduction: Good cushioning and vibration-dampening properties; effectively reduces friction noise and mechanical vibration during equipment operation, ensuring smooth and stable performance.
1. Precision Instruments and Meters: Suitable for elastic contacts, connecting wires, and precision elastic components in devices such as watches, sensors, precision measuring tools, and testing instruments; ensures precise instrument operation through stable elasticity and high-precision characteristics.
2. Electrical and Industrial Control Equipment: Widely used in high- and low-voltage electrical appliances, switch terminals, connectors, relays, temperature control components, motor windings, and electrical wiring; offers stable conductivity and reliable contact, eliminating potential circuit faults.
3. Mechanical Transmission and Wear-Resistant Applications: Used to manufacture gears, shaft sleeves, bushings, wear-resistant gaskets, and elastic transmission parts; leverages high wear resistance and self-lubricating properties to reduce mechanical wear and extend equipment service life.
4. New Energy and Rail Transit: Suitable for wiring in new energy equipment, electrical components for rail transit, and cabling for wind and solar power systems; features strong weather resistance, making it ideal for outdoor use, high-temperature environments, and long-term continuous operation.
5. Marine and Outdoor Engineering: Applicable to marine electrical systems, instrumentation wiring for offshore platforms, coastal wind power equipment, and water treatment components; withstands erosion from salt spray, humidity, and corrosive environments.
6. Precision Hardware Processing: Used for manufacturing precision hardware spring clips, buckles, fasteners, and custom-shaped wire components; delivers excellent forming results, stable spring-back, and consistent quality, making it suitable for high-end hardware production.
| Tin bronze alloy series composition,%max | |||||||
| Type | Cu（%） | Pb（%） | Fe（%） | Zn（%） | P（%） | Ni（%） | Sn（%） |
| QSn6.5-01 | Other | 0.02 | 0.05 | 0.3 | 0.10-0.25 | 0.2 | 6.0-7.0 |
| QSn4-0.3 | Other | 0.05 | 0.1 | 0.3 | 0.03-0.35 | 0.2 | 3.5-4.9 |
| QSn4-4-4 | Other | 3.5-4.5 | 0.05 | 3.0-5.0 | 0.03 | 0.2 | 3.0-5.0 |
| C51000 | Other | 0.05 | 0.01 | 0.3 | 0.03-0.35 | 0.3 | 3.5-5.0 |
| C54400 | Other | 3.5-4.5 | 0.1 | 1.5-4.5 | 0.01-0.5 | 0.2 | 3.5-4.5 |
| C51900 | Other | 0.2 | 0.05 | 0.3 | 0.1-0.25 | 0.2 | 6.0-7.0 |
1. Common Materials: Tin-bronze alloys compliant with GB or ASTM standards, such as QSn4-3, QSn6.5-0.1, QSn6.5-0.4, QSn7-0.2, CuSn015, C5191, C5210, etc.
2. Wire Diameter Specifications: 0.1mm – 12.0mm; full-range customization available (ultra-fine, standard, and heavy-gauge wires); non-standard sizes can be processed upon request.
3. Product Temper: Soft (M), Half-hard (Y2), and Hard (Y); suitable for various applications requiring bending/forming, wear resistance/load-bearing, and elastic spring-back.
4. Product Structure: Single-strand solid wire or multi-strand twisted wire; structure customizable based on routing, conductivity, and wear-resistance requirements.
5. Standard Length: Supplied in standard spools/coils.
6. Tolerance Standards: High-precision tolerances meeting national standards; standard diameter tolerance of ±0.01mm, with precision wire tolerances controllable to ±0.005mm.
7. Surface Finish: Mirror-polished, degreased/cleaned, and anti-oxidation treated; surfaces are free from oil, oxidation, and scratches.
Packaging: Standard packaging involves winding the wire onto specialized plastic spools, wrapping it in waterproof film and shock-absorbing bubble wrap, and securing it within sturdy cardboard cartons or wooden crates. Ultra-fine wires receive individual, moisture-proof sealed packaging to prevent moisture exposure, oxidation, bending, or abrasion during transit. All products are clearly labeled with material, specifications, temper, and batch information to facilitate easy verification upon receipt and efficient warehouse management.
Shipping: We utilize dedicated direct logistics routes suitable for long-distance and cross-border transport, ensuring product integrity throughout the journey. Expedited shipping options are also available to meet urgent production requirements.
1. Precision Instrument Manufacturer: "We have consistently sourced tin-bronze wire from this supplier. The wire surface is exceptionally smooth—free of burrs or oxidation spots—and dimensional tolerances are precise. It withstands bending without cracking and exhibits stable spring-back, resulting in high yields for our elastic instrument contacts. Its performance is far more stable than competing products we used previously, giving us great confidence in long-term bulk procurement."
2. Electrical Equipment Manufacturer: "The wire offers stable conductivity; it does not heat up during operation and ensures tight, secure crimping with excellent contact performance, making it ideal for manufacturing our relays and switch components. The material is uniform and free of impurities, offers excellent weldability, and minimizes processing waste—delivering outstanding value for money."
3. Mechanical Parts Processor: "This tin-bronze wire demonstrates exceptional wear resistance. When used for bushings and wear-resistant components, it reduces equipment operating noise and wear, significantly extending service life. It resists rust and corrosion even in humid environments, making it highly adaptable to various operating conditions."
4. New Energy Project Client: "The custom, non-standard wire meets all precision requirements, and its temper (hardness/softness) aligns perfectly with our production needs. It shows no signs of oxidation or degradation after prolonged outdoor use. With consistent quality, fast shipping, and responsive after-sales support, they are a highly reliable long-term partner."
5. Export/Trade Client: "The products strictly adhere to Chinese and US standards, featuring fine craftsmanship and secure packaging that withstands long-distance ocean shipping without damage. Material test data meets specifications, and performance is stable, fully satisfying the requirements of overseas projects."
