CuSn6 HP

Standard designation

EN CW452K / UNS C51900

Chemical composition
Cu Rest
Sn [%] 6
P [%] 0.1
Description / applications

CuSn6 HP is one of the copper-tin alloys. CuSn6 offers an exceptional combination of strength and electrical conductivity. CuSn6 HP is especially malleable due to its fine-grained structure. Applications: connectors, contact pins, springs, stamped parts, parts for machine and equipment engineering

Physical properties¹
Density 8.8 g/cm³
Electrical conductivity 9 m/Ω·mm²
15.5 % IACS
Thermal conductivity 75 W/m·K
Thermal expansion coefficient 18.5·10
E modulus 115 GPa
¹Approximate values in soft state, measured at ambient temperature
²IACS = International Annealed Copper Standard
Processing information
Weldability good
Solderability very good
Stress crack corrosion none
Mechanical properties
Condition Tensile strength Rm [MPa] Yield strength Rp0.2 [MPa] Elongation
A50 [%]
R550 550-650 min. 500 min. 16 170-220
R670 670-780 min. 660 min. 7 200-260

More information

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CuSn6 HP
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