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Formula: CuSn
Form: Coil
Material: Tinned Copper
Commodity: Alloys

Tinned Copper Alloy Coil (CuSn)

Tinned Copper Alloy Coil (CuSn) combines the high electrical and thermal conductivity of copper with the corrosion resistance and solderability imparted by a tin coating. The coil format provides continuous length and flexibility, ideal for automated manufacturing and large-scale processing. Industries including electronics, electrical engineering, and telecommunications use tinned copper alloy coils for wiring, shielding, and conductive busbars. Specific applications include manufacturing corrosion-resistant electrical connectors, producing grounding straps for high-reliability systems, and forming conductive shielding for cables in harsh environments. In research and innovation, this material is valued for its stable surface characteristics, ease of soldering, and long-term performance in humid or chemically aggressive conditions. Its combination of mechanical workability, corrosion protection, and conductivity makes it indispensable for both prototyping and industrial-scale electrical infrastructure.

Serious health hazard

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Tolerances

Coil
Thickness <0.01mm ±25%
Thickness 0.01mm - 0.05mm ±15%
Thickness >0.05mm ±10%

Material Properties for Alloys

Mechanical Properties
Element Value
Elongation at break( % ) 50
Modulus of elasticity( GPa ) 117
Hardness - Vickers( kgf mm⁻² ) 40-120
Tensile strength( MPa ) 200-400
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 45293
Temperature coefficient( K⁻¹ ) -
Thermal Properties
Element Value
Melting point( C ) 1083
Thermal conductivity( W m⁻¹ K⁻¹ ) 391.1@°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 16.9@20-100°C
Physical Properties
Element Value
Density( gcm⁻³ ) 8.92

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