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CC762S Brass vs. CC498K Bronze

Both CC762S brass and CC498K bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 67% of their average alloy composition in common.

For each property being compared, the top bar is CC762S brass and the bottom bar is CC498K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
78
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 7.3
14
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 43
41
Tensile Strength: Ultimate (UTS), MPa 840
260
Tensile Strength: Yield (Proof), MPa 540
130

Thermal Properties

Latent Heat of Fusion, J/g 200
190
Maximum Temperature: Mechanical, °C 160
170
Melting Completion (Liquidus), °C 920
1000
Melting Onset (Solidus), °C 870
920
Specific Heat Capacity, J/kg-K 420
370
Thermal Conductivity, W/m-K 51
73
Thermal Expansion, µm/m-K 20
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 28
10
Electrical Conductivity: Equal Weight (Specific), % IACS 32
10

Otherwise Unclassified Properties

Base Metal Price, % relative 24
32
Density, g/cm3 8.0
8.8
Embodied Carbon, kg CO2/kg material 3.1
3.2
Embodied Energy, MJ/kg 51
52
Embodied Water, L/kg 350
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 54
30
Resilience: Unit (Modulus of Resilience), kJ/m3 1290
72
Stiffness to Weight: Axial, points 7.8
6.9
Stiffness to Weight: Bending, points 20
18
Strength to Weight: Axial, points 29
8.1
Strength to Weight: Bending, points 25
10
Thermal Diffusivity, mm2/s 15
22
Thermal Shock Resistance, points 27
9.3

Alloy Composition

Aluminum (Al), % 3.0 to 7.0
0 to 0.010
Antimony (Sb), % 0 to 0.030
0 to 0.25
Copper (Cu), % 57 to 67
85 to 90
Iron (Fe), % 1.5 to 4.0
0 to 0.25
Lead (Pb), % 0 to 0.2
1.0 to 2.0
Manganese (Mn), % 2.5 to 5.0
0
Nickel (Ni), % 0 to 3.0
0 to 1.0
Phosphorus (P), % 0 to 0.030
0 to 0.050
Silicon (Si), % 0 to 0.1
0 to 0.010
Sulfur (S), % 0
0 to 0.1
Tin (Sn), % 0 to 0.2
5.5 to 6.5
Zinc (Zn), % 13.4 to 36
3.0 to 5.0