EN CC492K (CuSn7Zn2Pb3-C) Leaded Tin Bronze
Copper Alloys
Property Overview
Density8.8g/cm³
Elastic Modulus110GPa
Tensile Strength270MPa
Yield Strength150MPa
Brinell Hardness78HB
Maximum Service Temperature170°C
Chemical Composition
C
CuSn7Zn2Pb3-C ( CC492K ) Copper-tin-lead alloy Chemical composition. Equivalents of CuSn7Zn2Pb3-C ( CC492K ). Standards.1 Mechanical Properties. Hardness%
NI
0 to 2.0%
SI
0 to 0.010%
P
0 to 0.1%
S
0 to 0.1%
CU
83 to 89%
AL
0 to 0.010%
PB
2.5 to 3.5%
SB
0 to 0.25%
SN
6.0 to 8.0%
ZN
1.5 to 3.0%
FE
0 to 0.2%
Mechanical
A - Min. elongation at fracture (%) (GM) or (GZ) or (GC)
12
A - Min. elongation at fracture (%) (GS)
14
Elastic (Young's, Tensile) Modulus
110 GPa
Elongation at Break
14 %
Poisson's Ratio
0.34
R p0.2 0.2% proof strength (MPa) (GC)
130
R p0.2 0.2% proof strength (MPa) (GS) or (GM)
130
R p0.2 0.2% proof strength (MPa) (GZ)
130
Rm - Tensile strength (MPa) (GC)
270
Rm - Tensile strength (MPa) (GS) or (GM)
230
Rm - Tensile strength (MPa) (GZ)
260
Shear Modulus
40 GPa
Tensile Strength: Ultimate (UTS)
280 MPa
Tensile Strength: Yield (Proof)
150 MPa
Hardness
Brinell Hardness
78
Brinell hardness (HBW): (GM) or (GZ) or (GC)
70
Brinell hardness (HBW): (GS)
65
Physical
Density
8.8 g/cm 3
Thermal
Latent Heat of Fusion
190 J/g
Maximum Temperature: Mechanical
170 °C
Melting Completion (Liquidus)
1000 °C
Melting Onset (Solidus)
900 °C
Specific Heat Capacity
370 J/kg-K
Thermal Conductivity
73 W/m-K
Thermal Diffusivity
23 mm 2 /s
Thermal Expansion
18 µm/m-K
Thermal Shock Resistance
10 points
Electrical
Electrical Conductivity: Equal Volume
13 % IACS
Electrical Conductivity: Equal Weight (Specific)
13 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
33 MJ/m 3
Resilience: Unit (Modulus of Resilience)
100 kJ/m 3
Stiffness to Weight: Axial
6.8 points
Stiffness to Weight: Bending
18 points
Strength to Weight: Axial
8.7 points
Strength to Weight: Bending
11 points
Environmental
Base Metal Price
33 % relative
Embodied Carbon
3.4 kg CO 2 /kg material
Embodied Energy
54 MJ/kg
Embodied Energy
54 MJ/kg 23 x 10 3 BTU/lb
Embodied Water
370 L/kg
Embodied Water
370 L/kg 44 gal/lb
Registered Designations & Aliases
CC492KCuSn7Zn2Pb3-CCuSn7Zn2Pb3-CEN CC492K (CuSn7Zn2Pb3-C) Leaded Tin Bronze
Standards
EN 1982 EN 1982: 2008 Copper and copper alloys. Ingots and castings
EN 1982 EN 1982: Copper and copper alloys - Ingots and castings