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CC765S Brass vs. CC495K Bronze

Both CC765S brass and CC495K bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 61% of their average alloy composition in common.

For each property being compared, the top bar is CC765S brass and the bottom bar is CC495K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130
76
Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 21
7.0
Poisson's Ratio 0.31
0.35
Shear Modulus, GPa 42
37
Tensile Strength: Ultimate (UTS), MPa 540
240
Tensile Strength: Yield (Proof), MPa 220
120

Thermal Properties

Latent Heat of Fusion, J/g 180
180
Maximum Temperature: Mechanical, °C 140
140
Melting Completion (Liquidus), °C 860
930
Melting Onset (Solidus), °C 820
820
Specific Heat Capacity, J/kg-K 400
350
Thermal Conductivity, W/m-K 91
48
Thermal Expansion, µm/m-K 20
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
10
Electrical Conductivity: Equal Weight (Specific), % IACS 34
10

Otherwise Unclassified Properties

Base Metal Price, % relative 24
33
Density, g/cm3 8.0
9.0
Embodied Carbon, kg CO2/kg material 3.0
3.6
Embodied Energy, MJ/kg 51
58
Embodied Water, L/kg 330
400

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
14
Resilience: Unit (Modulus of Resilience), kJ/m3 220
68
Stiffness to Weight: Axial, points 7.6
6.2
Stiffness to Weight: Bending, points 20
17
Strength to Weight: Axial, points 19
7.3
Strength to Weight: Bending, points 18
9.4
Thermal Diffusivity, mm2/s 28
15
Thermal Shock Resistance, points 17
8.8

Alloy Composition

Aluminum (Al), % 0.5 to 2.5
0 to 0.010
Antimony (Sb), % 0 to 0.080
0 to 0.5
Copper (Cu), % 51 to 65
76 to 82
Iron (Fe), % 0.5 to 2.0
0 to 0.25
Lead (Pb), % 0 to 0.5
8.0 to 11
Manganese (Mn), % 0.3 to 3.0
0 to 0.2
Nickel (Ni), % 0 to 6.0
0 to 2.0
Phosphorus (P), % 0 to 0.030
0 to 0.1
Silicon (Si), % 0 to 0.1
0 to 0.010
Sulfur (S), % 0
0 to 0.1
Tin (Sn), % 0 to 1.0
9.0 to 11
Zinc (Zn), % 19.8 to 47.7
0 to 2.0