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CC751S Brass vs. CC495K Bronze

Both CC751S brass and CC495K bronze 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 CC751S brass and the bottom bar is CC495K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130
76
Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 5.6
7.0
Poisson's Ratio 0.31
0.35
Shear Modulus, GPa 40
37
Tensile Strength: Ultimate (UTS), MPa 450
240
Tensile Strength: Yield (Proof), MPa 320
120

Thermal Properties

Latent Heat of Fusion, J/g 190
180
Maximum Temperature: Mechanical, °C 130
140
Melting Completion (Liquidus), °C 850
930
Melting Onset (Solidus), °C 810
820
Specific Heat Capacity, J/kg-K 390
350
Thermal Conductivity, W/m-K 110
48
Thermal Expansion, µm/m-K 20
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
10
Electrical Conductivity: Equal Weight (Specific), % IACS 28
10

Otherwise Unclassified Properties

Base Metal Price, % relative 24
33
Density, g/cm3 8.1
9.0
Embodied Carbon, kg CO2/kg material 2.8
3.6
Embodied Energy, MJ/kg 46
58
Embodied Water, L/kg 330
400

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
14
Resilience: Unit (Modulus of Resilience), kJ/m3 480
68
Stiffness to Weight: Axial, points 7.2
6.2
Stiffness to Weight: Bending, points 19
17
Strength to Weight: Axial, points 15
7.3
Strength to Weight: Bending, points 16
9.4
Thermal Diffusivity, mm2/s 35
15
Thermal Shock Resistance, points 15
8.8

Alloy Composition

Aluminum (Al), % 0 to 0.1
0 to 0.010
Antimony (Sb), % 0 to 0.5
0 to 0.5
Copper (Cu), % 62.7 to 66
76 to 82
Iron (Fe), % 0.25 to 0.5
0 to 0.25
Lead (Pb), % 0.8 to 2.2
8.0 to 11
Manganese (Mn), % 0 to 0.15
0 to 0.2
Nickel (Ni), % 0 to 0.8
0 to 2.0
Phosphorus (P), % 0
0 to 0.1
Silicon (Si), % 0.65 to 1.1
0 to 0.010
Sulfur (S), % 0
0 to 0.1
Tin (Sn), % 0 to 0.8
9.0 to 11
Zinc (Zn), % 27.9 to 35.6
0 to 2.0