CuSn7Zn4Pb7-B
Copper Alloys
Property Overview
Density-g/cm³
Elastic ModulusUnknown
Tensile Strength230MPa
Yield Strength120MPa
Brinell Hardness60HB
Maximum Service TemperatureUnknown
Chemical Composition
B
CuSn7Zn4Pb7-B ( CB493K ) Copper-tin-lead alloy Chemical composition. Equivalents of CuSn7Zn4Pb7-B ( CB493K ). Standards.1 Mechanical Properties. Hardness%
Mechanical
A - Min. elongation at fracture (%) (GM) or (GZ) or (GC)
12
A - Min. elongation at fracture (%) (GS)
15
R p0.2 0.2% proof strength (MPa) (GS) or (GM)
120
R p0.2 0.2% proof strength (MPa) (GZ) or (GC)
120
Rm - Tensile strength (MPa) (GS) or (GM)
230
Rm - Tensile strength (MPa) (GZ) or (GC)
260
Hardness
Brinell hardness (HBW): (GS) or (GM)
60
Brinell hardness (HBW): (GZ) or (GC)
70
Registered Designations & Aliases
CB493KCuSn7Zn4Pb7-B
Standards
EN 1982 EN 1982: 2008 Copper and copper alloys. Ingots and castings