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Formula: CuSn
Form: Wire
Material: Tinned Copper
Commodity: Alloys
Diameter: 0.25mm
Temper: Annealed
Coating: Pure Tin Coated

Tinned Copper Alloy Spooled Wire (CuSn)

Tinned Copper Alloy Spooled Wire (CuSn) combines the excellent electrical conductivity of copper with the corrosion resistance and mechanical strength imparted by tin. The continuous spooled form ensures ease of handling and reliable integration into automated production processes. Industries such as electronics, telecommunications, and automotive manufacturing rely on this wire for high-conductivity interconnects and long-lasting wiring systems. Specific applications include printed circuit board connections, grounding systems in vehicles, and contact leads in sensors. In research, tinned copper alloy spooled wire is investigated for fatigue performance, solderability improvements, and resistance to environmental stressors such as humidity and oxidation. Its balance of conductivity, durability, and ease of processing makes it indispensable in both mass manufacturing and advanced prototyping where consistent electrical performance is required.

Serious health hazard

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Tolerances

Wire
Diameter ±10%
Length +5% / -1%

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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