Standard designation

Marking according to DIN EN 1982: CuSn11P-C - GS
Material number according to DIN EN 1982: CC481K
Old mark based on DIN 1705 and DIN 1716:  
Old material no.:  

Chemical composition in wt. %

Copper Cu 87,0-89,5
Nickel Ni < 0,1
Phosphorus P < 0,5-1,0
Lead Pb < 0,25
Tin Sn 10,0-11,5
Aluminium Al < 0,01
Iron Fe < 0,10
Manganese Mn < 0,05
Sulphur S < 0,05
Antimony Sb < 0,05
Silicon Si < 0,01
Zinc Zn < 0,05

Physical properties

Density g/cm³ 8,6
Melting range °C 830-1010
Shrinkage value °C 1,5
Electr. conductivity at 20 °C MS/m 6,0
Thermal conductivity at 20 °C W/(m*K) 52
Linear expansion coefficient 10-6/K 18,0

Mechanical characteristics

Tensile strength Rm (MPa) 250
0,2 % - yield strength RP0,2 (MPa) 130
Ultimate tensile strength A (%) 5
Brinell hardness HB10 60

Technological properties

Elastic modulus GPa 90-110
Flexural fatique strength MPa 100
Shear strength MPa 195-210

Machining brazing-soldering and weldability

Machinability 3
Brazing medium
Gas welding poor
Inert gas welding medium


Alloys from Great Britain. Due to the high amount of phosphorous content tends to moulded material reactions. Phosphorous increases the hardness and stability at the cost of expansion.

Notes on usage

Applications as with CC482K and CC483K.

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