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Formula: Cu 94/Sn 6
Form: Coil
Material: Phosphor Bronze
Commodity: Alloys

Phosphor Bronze Coil (Cu94/Sn6)

Phosphor Bronze Coil (Cu94/Sn6) combines high fatigue resistance, low friction, and corrosion resistance in a continuous rolled format suited to precision stamping, spring production, and shielding applications. The tin content enhances strength and wear resistance, while the small phosphorus addition improves stiffness and reduces wear in contact surfaces. The coil geometry allows efficient feed into automated stamping lines and roll-forming machinery for large-scale manufacturing. Common uses include electrical connectors, contact springs, and precision fasteners in electronics, marine, and instrumentation industries. In research, this form is employed in fatigue testing rigs, electromagnetic shielding prototypes, and mechanical wear studies. Its combination of formability, mechanical integrity, and environmental durability makes it a preferred choice in high-performance manufacturing and experimental engineering projects.
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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
Hardness - Brinell 80-225
Elongation at break( % ) 60
Modulus of elasticity( GPa ) 90-120
Izod impact strength( J m⁻¹ ) 62
Shear strength( MPa ) 250-430
Tensile strength( MPa ) 320-740
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 11.0-16.0
Temperature coefficient( K⁻¹ ) 0.0006-0.0007
Thermal Properties
Element Value
Melting point( C ) 900-1050
Thermal conductivity( W m⁻¹ K⁻¹ ) 50-75@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 17@20-100°C
Physical Properties
Element Value
Density( gcm⁻³ ) 8.9

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