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CC495K Bronze vs. CC481K Bronze

Both CC495K bronze and CC481K bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 90% of their average alloy composition in common.

For each property being compared, the top bar is CC495K bronze and the bottom bar is CC481K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 76
90
Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 7.0
4.5
Poisson's Ratio 0.35
0.34
Shear Modulus, GPa 37
40
Tensile Strength: Ultimate (UTS), MPa 240
350
Tensile Strength: Yield (Proof), MPa 120
180

Thermal Properties

Latent Heat of Fusion, J/g 180
190
Maximum Temperature: Mechanical, °C 140
170
Melting Completion (Liquidus), °C 930
1000
Melting Onset (Solidus), °C 820
880
Specific Heat Capacity, J/kg-K 350
370
Thermal Conductivity, W/m-K 48
64
Thermal Expansion, µm/m-K 19
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
10
Electrical Conductivity: Equal Weight (Specific), % IACS 10
10

Otherwise Unclassified Properties

Base Metal Price, % relative 33
35
Density, g/cm3 9.0
8.7
Embodied Carbon, kg CO2/kg material 3.6
3.7
Embodied Energy, MJ/kg 58
60
Embodied Water, L/kg 400
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14
13
Resilience: Unit (Modulus of Resilience), kJ/m3 68
150
Stiffness to Weight: Axial, points 6.2
6.9
Stiffness to Weight: Bending, points 17
18
Strength to Weight: Axial, points 7.3
11
Strength to Weight: Bending, points 9.4
13
Thermal Diffusivity, mm2/s 15
20
Thermal Shock Resistance, points 8.8
13

Alloy Composition

Aluminum (Al), % 0 to 0.010
0 to 0.010
Antimony (Sb), % 0 to 0.5
0 to 0.050
Copper (Cu), % 76 to 82
87 to 89.5
Iron (Fe), % 0 to 0.25
0 to 0.1
Lead (Pb), % 8.0 to 11
0 to 0.25
Manganese (Mn), % 0 to 0.2
0 to 0.050
Nickel (Ni), % 0 to 2.0
0 to 0.1
Phosphorus (P), % 0 to 0.1
0 to 1.0
Silicon (Si), % 0 to 0.010
0 to 0.010
Sulfur (S), % 0 to 0.1
0 to 0.050
Tin (Sn), % 9.0 to 11
10 to 11.5
Zinc (Zn), % 0 to 2.0
0 to 0.5