Alloys

CuSn10

Standard designation

EN not standardised / UNS C52400

Chemical composition
Cu Rest
Sn [%] 10
P [%] 0.1
Description / applications

CuSn10 is one of the copper-tin alloys. CuSn10 is the material with the highest strength within the bronze group. Applications: components for the electronics industry, connectors, contact springs, relay springs, leaf springs

Physical properties¹
Density 8.75 g/cm³
Electrical conductivity 6.4 m/Ω·mm²
11% IACS²
Thermal conductivity 50 W/m·K
Thermal expansion coefficient 18.4·10-6/K
E modulus 110 GPa³
¹Approximate values in soft state, measured at ambient temperature
²IACS = International Annealed Copper Standard
³1 GPa = 1 kN/mm²
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 [%]		 Hardness
HV
R400/H120 400-500 max. 200 min. 55 120-150
R480/H140 480-560 min. 325 min. 40 140-170
R550/H170 550-650 min. 410 min. 30 170-200
R650/H200 650-750 min. 550 min. 18 200-230
R740/H220 740-830 min. 680 min. 9 220-250
R790/H235 790-890 min. 740 min. 4 235-270
R830/H250 > 830 min. 780 min. 2 > 250

More information

Datasheet
File type
CuSn10
PDF (297.31 KB)