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CC755S Brass vs. CC495K Bronze

Both CC755S brass and CC495K bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 63% of their average alloy composition in common.

For each property being compared, the top bar is CC755S brass and the bottom bar is CC495K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
76
Elastic (Young's, Tensile) Modulus, GPa 100
100
Elongation at Break, % 9.5
7.0
Poisson's Ratio 0.31
0.35
Shear Modulus, GPa 40
37
Tensile Strength: Ultimate (UTS), MPa 390
240
Tensile Strength: Yield (Proof), MPa 250
120

Thermal Properties

Latent Heat of Fusion, J/g 170
180
Maximum Temperature: Mechanical, °C 120
140
Melting Completion (Liquidus), °C 820
930
Melting Onset (Solidus), °C 780
820
Specific Heat Capacity, J/kg-K 390
350
Thermal Conductivity, W/m-K 120
48
Thermal Expansion, µm/m-K 21
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
10
Electrical Conductivity: Equal Weight (Specific), % IACS 30
10

Otherwise Unclassified Properties

Base Metal Price, % relative 23
33
Density, g/cm3 8.1
9.0
Embodied Carbon, kg CO2/kg material 2.7
3.6
Embodied Energy, MJ/kg 46
58
Embodied Water, L/kg 330
400

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 33
14
Resilience: Unit (Modulus of Resilience), kJ/m3 290
68
Stiffness to Weight: Axial, points 7.1
6.2
Stiffness to Weight: Bending, points 19
17
Strength to Weight: Axial, points 14
7.3
Strength to Weight: Bending, points 15
9.4
Thermal Diffusivity, mm2/s 38
15
Thermal Shock Resistance, points 13
8.8

Alloy Composition

Aluminum (Al), % 0.4 to 0.7
0 to 0.010
Antimony (Sb), % 0
0 to 0.5
Copper (Cu), % 59.5 to 61
76 to 82
Iron (Fe), % 0.050 to 0.2
0 to 0.25
Lead (Pb), % 1.2 to 1.7
8.0 to 11
Manganese (Mn), % 0 to 0.050
0 to 0.2
Nickel (Ni), % 0 to 0.2
0 to 2.0
Phosphorus (P), % 0
0 to 0.1
Silicon (Si), % 0 to 0.050
0 to 0.010
Sulfur (S), % 0
0 to 0.1
Tin (Sn), % 0 to 0.3
9.0 to 11
Zinc (Zn), % 35.8 to 38.9
0 to 2.0