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CC497K Bronze vs. CC762S Brass

Both CC497K bronze and CC762S 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 CC497K bronze and the bottom bar is CC762S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
210
Elastic (Young's, Tensile) Modulus, GPa 93
110
Elongation at Break, % 6.7
7.3
Poisson's Ratio 0.36
0.32
Shear Modulus, GPa 34
43
Tensile Strength: Ultimate (UTS), MPa 190
840
Tensile Strength: Yield (Proof), MPa 91
540

Thermal Properties

Latent Heat of Fusion, J/g 160
200
Maximum Temperature: Mechanical, °C 130
160
Melting Completion (Liquidus), °C 870
920
Melting Onset (Solidus), °C 800
870
Specific Heat Capacity, J/kg-K 330
420
Thermal Conductivity, W/m-K 53
51
Thermal Expansion, µm/m-K 20
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
28
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
32

Otherwise Unclassified Properties

Base Metal Price, % relative 29
24
Density, g/cm3 9.3
8.0
Embodied Carbon, kg CO2/kg material 3.0
3.1
Embodied Energy, MJ/kg 48
51
Embodied Water, L/kg 370
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 10
54
Resilience: Unit (Modulus of Resilience), kJ/m3 45
1290
Stiffness to Weight: Axial, points 5.5
7.8
Stiffness to Weight: Bending, points 16
20
Strength to Weight: Axial, points 5.6
29
Strength to Weight: Bending, points 7.8
25
Thermal Diffusivity, mm2/s 17
15
Thermal Shock Resistance, points 7.2
27

Alloy Composition

Aluminum (Al), % 0 to 0.010
3.0 to 7.0
Antimony (Sb), % 0 to 0.75
0 to 0.030
Copper (Cu), % 67.5 to 77.5
57 to 67
Iron (Fe), % 0 to 0.25
1.5 to 4.0
Lead (Pb), % 18 to 23
0 to 0.2
Manganese (Mn), % 0 to 0.2
2.5 to 5.0
Nickel (Ni), % 0.5 to 2.5
0 to 3.0
Phosphorus (P), % 0 to 0.1
0 to 0.030
Silicon (Si), % 0 to 0.010
0 to 0.1
Sulfur (S), % 0 to 0.1
0
Tin (Sn), % 4.0 to 6.0
0 to 0.2
Zinc (Zn), % 0 to 2.0
13.4 to 36