close
Choose Your Site
Global
Social Media
Phosphor bronze wire is a high-performance copper alloy wire crafted from a copper base precisely alloyed with tin and trace amounts of phosphorus. Through a process involving melting, multi-pass cold drawing, and precision annealing, the material achieves a dense, uniform internal structure and a smooth, burr-free surface—a result of phosphorus acting as a deoxidizer to effectively eliminate internal oxide impurities. Offering an optimal balance of elasticity, electrical conductivity, wear resistance, and corrosion resistance, the wire can be customized in terms of temper (hardness) to suit specific application requirements. It is well-suited for various manufacturing processes, including precision stamping, spring coiling, turning, and weaving, serving as a core raw material for elastic, conductive components in the electronics, precision machinery, and telecommunications sectors.
1. Elastic and durable anti-fatigue: The elasticity decays slowly under repeated bending and millions of plugging and unplugging conditions, and is not prone to permanent deformation. It has stable contact for long-term use and is suitable for high-frequency reciprocating elastic parts.
2. Balanced conductivity, controllable temperature rise: It has stable conductivity, low heat generation when energized, and small contact resistance, reducing the risk of poor circuit contact and sparking. It is suitable for conductive contacts that are continuously energized.
3. Corrosion and wear resistance, strong environmental adaptability: Resistant to oxidation and stress corrosion in humid, sulfur-containing, mild salt spray environments, with low friction coefficient, small sliding wear loss, and no sparks during impact operations.
4. Excellent processing performance: The wire structure is uniform, the plasticity is good, the cold processing is smooth, and the stamping, winding, and turning are not prone to edge chipping and cracking, reducing the processing scrap rate and improving production efficiency.
5. Controllable dimensional accuracy: Precision drawing process, strict control of diameter tolerances, high consistency of mechanical properties of wires in the same batch, stable supply in large quantities, and support for customized material changes.
Material Grades: Includes common phosphor bronze alloys such as QSn6.5-0.1, C5191, and C5210; composition and impurities are strictly controlled to ensure high material purity.
Surface Condition: Features a bright, drawn finish; free from peeling, with excellent roundness and uniform cross-sections.
Mechanical Temper: Available in various tempers—soft, half-hard, hard, and extra-hard—with hardness and tensile strength adjustable to specific requirements.
Internal Microstructure: Characterized by fine grain structure and an absence of internal defects such as porosity or inclusions; ensures consistent mechanical properties across different batches.
Safety Characteristics: Non-sparking upon impact, making it suitable for certain explosion-proof applications; non-magnetic, ensuring no interference with precision sensing components.
Electronics and Electrical Industry: Connector terminals, relay springs, conductive switch contacts, micro-motor brushes, battery contact springs, and connector pins.
Precision Machinery Industry: Various types of micro-springs, bushings, sleeves, wear-resistant shims, elastic valve components, and elastic elements for instrumentation.
Telecommunications and Wiring Harnesses: Conductive elastic components for telecommunications equipment, RF connectors, and sensor contact springs.
Other Sectors: Musical instrument strings, woven filter mesh, components for precision medical instruments, and wear-resistant parts for marine environments with mild corrosive conditions.
Diameter range: 0.03 mm – 8.0 mm; capable of producing everything from ultra-fine filaments to standard-gauge wires.
Material grades: QSn6.5-0.1 (C5191) and QSn8-0.3 (C5210); tin content can be customized upon request.
Temper: O (soft/annealed), 1/4H, 1/2H (half-hard), H (hard), and EH (extra-hard).
Tolerance: Standard tolerance ranges from ±0.005 mm to ±0.02 mm; tighter tolerances are available for ultra-fine specifications.
Packaging: Supplied on plastic spools or in coils; vacuum-sealed for moisture protection to prevent oxidation during storage. Spool specifications can be customized to meet client requirements.
1. Bright-Finish Straight-Drawn Phosphor Bronze Wire: Features a mirror-like surface finish; ideal for spring coiling and precision terminal stamping—a standard choice for the electronics industry.
2. Ultra-Fine Phosphor Bronze Wire: Micro-gauge wires (0.03–0.2 mm) designed for miniature sensors, precision woven mesh, and micro-contacts.
3. Half-Hard Phosphor Bronze Wire: Offers a balance between formability and elasticity; an excellent choice for secondary bending operations, ensuring stable spring-back after forming.
4. Full-Hard, High-Elasticity Phosphor Bronze Wire: Characterized by high tensile strength and hardness; suitable for connector springs that require high elastic force and durability through frequent mating cycles.
5. Customized/Modified Phosphor Bronze Wire: Available with bespoke diameters, specific hardness levels, and surface passivation treatments for oxidation resistance.
