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CC499K Bronze vs. CC764S Brass

Both CC499K bronze and CC764S brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 65% of their average alloy composition in common.

For each property being compared, the top bar is CC499K bronze and the bottom bar is CC764S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 73
160
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 13
15
Poisson's Ratio 0.34
0.31
Shear Modulus, GPa 41
41
Tensile Strength: Ultimate (UTS), MPa 260
680
Tensile Strength: Yield (Proof), MPa 120
290

Thermal Properties

Latent Heat of Fusion, J/g 190
180
Maximum Temperature: Mechanical, °C 170
130
Melting Completion (Liquidus), °C 1000
850
Melting Onset (Solidus), °C 920
810
Specific Heat Capacity, J/kg-K 370
400
Thermal Conductivity, W/m-K 73
94
Thermal Expansion, µm/m-K 18
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
32
Electrical Conductivity: Equal Weight (Specific), % IACS 12
36

Otherwise Unclassified Properties

Base Metal Price, % relative 32
23
Density, g/cm3 8.8
7.9
Embodied Carbon, kg CO2/kg material 3.1
2.9
Embodied Energy, MJ/kg 51
49
Embodied Water, L/kg 350
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
80
Resilience: Unit (Modulus of Resilience), kJ/m3 65
390
Stiffness to Weight: Axial, points 6.9
7.6
Stiffness to Weight: Bending, points 18
20
Strength to Weight: Axial, points 8.1
24
Strength to Weight: Bending, points 10
22
Thermal Diffusivity, mm2/s 22
30
Thermal Shock Resistance, points 9.2
22

Alloy Composition

Aluminum (Al), % 0 to 0.010
1.0 to 3.0
Antimony (Sb), % 0 to 0.1
0 to 0.050
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.020
0
Cadmium (Cd), % 0 to 0.020
0
Chromium (Cr), % 0 to 0.020
0
Copper (Cu), % 84 to 88
52 to 66
Iron (Fe), % 0 to 0.3
0.5 to 2.5
Lead (Pb), % 0 to 3.0
0 to 0.3
Manganese (Mn), % 0
0.3 to 4.0
Nickel (Ni), % 0 to 0.6
0 to 3.0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.010
0 to 0.1
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 4.0 to 6.0
0 to 0.3
Zinc (Zn), % 4.0 to 6.0
20.7 to 50.2