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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
Crafted from premium ASTM UNS C51900 alloy (CuSn6), this wire undergoes a specialized cold-drawing process to achieve unparalleled dimensional stability. It uniquely combines exceptional elasticity with superior wear resistance, making it the preferred choice for precision engineering applications where even minimal dimensional variation can compromise functionality .
Parameter | Value |
Material | ASTM UNS C51900 Tin Bronze (CuSn6 with 0.2% P for enhanced strength) |
Diameter Range | 0.025mm - 5mm (customizable in 0.001mm increments) |
Hardness | 90 HV (annealed for maximum ductility) to 290 HV (80% reduced for high strength) |
Tensile Strength | 115 kN/mm² (at room temperature) |
Surface Finish | Polished (Ra ≤ 0.8μm), bright, or oiled (anti-rust protection) |
Melting Range | 910 - 1040°C (optimal for soldering applications) |
• Microscopic dimensional accuracy (±0.001mm tolerance) ensured by laser diameter monitoring during production, guaranteeing consistent spring performance
• Excellent corrosion resistance in atmospheric, fresh water, and mild industrial environments, with passivation options available
• High electrical conductivity (7 MS/m) that makes it suitable for electromechanical components requiring both mechanical and electrical functionality
• Customizable annealing options (380 - 450°C) to tailor elasticity and ductility for specific load requirements
• Uniform grain structure achieved through controlled cooling, reducing risk of fatigue failure under repeated stress
Widely utilized in electrical connectors for automotive and aerospace systems, precision switches in industrial control panels, automotive sensors for engine management, and medical device springs in diagnostic equipment. It is particularly critical for applications requiring long-term fatigue resistance, such as relay contacts in power distribution systems and diaphragm valves in fluid control mechanisms .
Q: What certification standards does this wire meet?
A: It complies with DIN 17662, EN 12166, and ASTM B159 standards, ensuring global acceptance in various industrial sectors .
Q: Can surface coatings be applied?
A: Yes, electroplated coatings (including tin, nickel, and gold) are available upon request for enhanced corrosion protection or solderability.
Q: What is the typical lead time for custom diameters?
A: Standard diameters ship within 3-5 days; custom sizes require 7-10 business days for 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 |
