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CC765S Brass vs. CC492K Bronze

Both CC765S brass and CC492K bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 62% of their average alloy composition in common.

For each property being compared, the top bar is CC765S brass and the bottom bar is CC492K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130
78
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 21
14
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 42
40
Tensile Strength: Ultimate (UTS), MPa 540
280
Tensile Strength: Yield (Proof), MPa 220
150

Thermal Properties

Latent Heat of Fusion, J/g 180
190
Maximum Temperature: Mechanical, °C 140
170
Melting Completion (Liquidus), °C 860
1000
Melting Onset (Solidus), °C 820
900
Specific Heat Capacity, J/kg-K 400
370
Thermal Conductivity, W/m-K 91
73
Thermal Expansion, µm/m-K 20
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
13
Electrical Conductivity: Equal Weight (Specific), % IACS 34
13

Otherwise Unclassified Properties

Base Metal Price, % relative 24
33
Density, g/cm3 8.0
8.8
Embodied Carbon, kg CO2/kg material 3.0
3.4
Embodied Energy, MJ/kg 51
54
Embodied Water, L/kg 330
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
33
Resilience: Unit (Modulus of Resilience), kJ/m3 220
100
Stiffness to Weight: Axial, points 7.6
6.8
Stiffness to Weight: Bending, points 20
18
Strength to Weight: Axial, points 19
8.7
Strength to Weight: Bending, points 18
11
Thermal Diffusivity, mm2/s 28
23
Thermal Shock Resistance, points 17
10

Alloy Composition

Aluminum (Al), % 0.5 to 2.5
0 to 0.010
Antimony (Sb), % 0 to 0.080
0 to 0.25
Copper (Cu), % 51 to 65
83 to 89
Iron (Fe), % 0.5 to 2.0
0 to 0.2
Lead (Pb), % 0 to 0.5
2.5 to 3.5
Manganese (Mn), % 0.3 to 3.0
0
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
6.0 to 8.0
Zinc (Zn), % 19.8 to 47.7
1.5 to 3.0