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CC760S Brass vs. CC491K Bronze

Both CC760S brass and CC491K 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 CC760S brass and the bottom bar is CC491K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 51
73
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 22
13
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 42
40
Tensile Strength: Ultimate (UTS), MPa 180
260
Tensile Strength: Yield (Proof), MPa 80
120

Thermal Properties

Latent Heat of Fusion, J/g 190
190
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 1000
980
Melting Onset (Solidus), °C 940
900
Specific Heat Capacity, J/kg-K 390
370
Thermal Conductivity, W/m-K 150
71
Thermal Expansion, µm/m-K 19
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
15
Electrical Conductivity: Equal Weight (Specific), % IACS 40
15

Otherwise Unclassified Properties

Base Metal Price, % relative 28
31
Density, g/cm3 8.6
8.9
Embodied Carbon, kg CO2/kg material 2.6
3.1
Embodied Energy, MJ/kg 43
51
Embodied Water, L/kg 320
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 33
27
Resilience: Unit (Modulus of Resilience), kJ/m3 29
67
Stiffness to Weight: Axial, points 7.2
6.7
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 5.8
8.1
Strength to Weight: Bending, points 8.2
10
Thermal Diffusivity, mm2/s 45
22
Thermal Shock Resistance, points 6.2
9.3

Alloy Composition

Aluminum (Al), % 0 to 0.010
0 to 0.010
Antimony (Sb), % 0
0 to 0.25
Arsenic (As), % 0.050 to 0.15
0
Copper (Cu), % 83 to 88
81 to 87
Iron (Fe), % 0 to 0.15
0 to 0.3
Lead (Pb), % 0 to 0.5
4.0 to 6.0
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0 to 0.1
0 to 2.0
Phosphorus (P), % 0
0 to 0.1
Silicon (Si), % 0 to 0.020
0 to 0.010
Sulfur (S), % 0
0 to 0.1
Tin (Sn), % 0 to 0.3
4.0 to 6.0
Zinc (Zn), % 10.7 to 17
4.0 to 6.0