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CC499K Bronze vs. CC762S Brass

Both CC499K bronze and CC762S brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 68% of their average alloy composition in common.

For each property being compared, the top bar is CC499K bronze and the bottom bar is CC762S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 73
210
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 13
7.3
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 41
43
Tensile Strength: Ultimate (UTS), MPa 260
840
Tensile Strength: Yield (Proof), MPa 120
540

Thermal Properties

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

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
28
Electrical Conductivity: Equal Weight (Specific), % IACS 12
32

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
54
Resilience: Unit (Modulus of Resilience), kJ/m3 65
1290
Stiffness to Weight: Axial, points 6.9
7.8
Stiffness to Weight: Bending, points 18
20
Strength to Weight: Axial, points 8.1
29
Strength to Weight: Bending, points 10
25
Thermal Diffusivity, mm2/s 22
15
Thermal Shock Resistance, points 9.2
27

Alloy Composition

Aluminum (Al), % 0 to 0.010
3.0 to 7.0
Antimony (Sb), % 0 to 0.1
0 to 0.030
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
57 to 67
Iron (Fe), % 0 to 0.3
1.5 to 4.0
Lead (Pb), % 0 to 3.0
0 to 0.2
Manganese (Mn), % 0
2.5 to 5.0
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 0.2
Zinc (Zn), % 4.0 to 6.0
13.4 to 36