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C84000 Brass vs. C91000 Bronze

Both C84000 brass and C91000 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 90% of their average alloy composition in common.

For each property being compared, the top bar is C84000 brass and the bottom bar is C91000 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 65
180
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 27
7.0
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 42
39
Tensile Strength: Ultimate (UTS), MPa 250
230
Tensile Strength: Yield (Proof), MPa 140
150

Thermal Properties

Latent Heat of Fusion, J/g 190
180
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 1040
960
Melting Onset (Solidus), °C 940
820
Specific Heat Capacity, J/kg-K 380
360
Thermal Conductivity, W/m-K 72
64
Thermal Expansion, µm/m-K 18
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 17
9.4

Otherwise Unclassified Properties

Base Metal Price, % relative 30
37
Density, g/cm3 8.6
8.6
Embodied Carbon, kg CO2/kg material 3.0
4.1
Embodied Energy, MJ/kg 49
67
Embodied Water, L/kg 330
420

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 58
14
Resilience: Unit (Modulus of Resilience), kJ/m3 83
100
Stiffness to Weight: Axial, points 7.2
6.8
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 8.2
7.5
Strength to Weight: Bending, points 10
9.7
Thermal Diffusivity, mm2/s 22
20
Thermal Shock Resistance, points 9.0
8.8

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0 to 0.0050
Antimony (Sb), % 0 to 0.020
0 to 0.2
Boron (B), % 0 to 0.1
0
Copper (Cu), % 82 to 89
84 to 86
Iron (Fe), % 0 to 0.4
0 to 0.1
Lead (Pb), % 0 to 0.090
0 to 0.2
Manganese (Mn), % 0 to 0.010
0
Nickel (Ni), % 0.5 to 2.0
0 to 0.8
Phosphorus (P), % 0 to 0.050
0 to 1.5
Silicon (Si), % 0 to 0.0050
0 to 0.0050
Sulfur (S), % 0.1 to 0.65
0 to 0.050
Tin (Sn), % 2.0 to 4.0
14 to 16
Zinc (Zn), % 5.0 to 14
0 to 1.5
Zirconium (Zr), % 0 to 0.1
0
Residuals, % 0 to 0.7
0 to 0.6