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C84000 Brass vs. C90900 Bronze

Both C84000 brass and C90900 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 89% of their average alloy composition in common.

For each property being compared, the top bar is C84000 brass and the bottom bar is C90900 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 65
90
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 27
15
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 42
40
Tensile Strength: Ultimate (UTS), MPa 250
280
Tensile Strength: Yield (Proof), MPa 140
140

Thermal Properties

Latent Heat of Fusion, J/g 190
190
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 1040
980
Melting Onset (Solidus), °C 940
820
Specific Heat Capacity, J/kg-K 380
360
Thermal Conductivity, W/m-K 72
65
Thermal Expansion, µm/m-K 18
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
11
Electrical Conductivity: Equal Weight (Specific), % IACS 17
11

Otherwise Unclassified Properties

Base Metal Price, % relative 30
36
Density, g/cm3 8.6
8.7
Embodied Carbon, kg CO2/kg material 3.0
3.9
Embodied Energy, MJ/kg 49
64
Embodied Water, L/kg 330
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 58
35
Resilience: Unit (Modulus of Resilience), kJ/m3 83
89
Stiffness to Weight: Axial, points 7.2
6.8
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 8.2
8.8
Strength to Weight: Bending, points 10
11
Thermal Diffusivity, mm2/s 22
21
Thermal Shock Resistance, points 9.0
10

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
86 to 89
Iron (Fe), % 0 to 0.4
0 to 0.15
Lead (Pb), % 0 to 0.090
0 to 0.25
Manganese (Mn), % 0 to 0.010
0
Nickel (Ni), % 0.5 to 2.0
0 to 0.5
Phosphorus (P), % 0 to 0.050
0 to 0.050
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
12 to 14
Zinc (Zn), % 5.0 to 14
0 to 0.25
Zirconium (Zr), % 0 to 0.1
0
Residuals, % 0 to 0.7
0 to 0.6