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C84000 Brass vs. C90400 Bronze

Both C84000 brass and C90400 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a moderately high 93% of their average alloy composition in common.

For each property being compared, the top bar is C84000 brass and the bottom bar is C90400 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 65
77
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 27
24
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 42
41
Tensile Strength: Ultimate (UTS), MPa 250
310
Tensile Strength: Yield (Proof), MPa 140
180

Thermal Properties

Latent Heat of Fusion, J/g 190
190
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 1040
990
Melting Onset (Solidus), °C 940
850
Specific Heat Capacity, J/kg-K 380
370
Thermal Conductivity, W/m-K 72
75
Thermal Expansion, µm/m-K 18
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
12
Electrical Conductivity: Equal Weight (Specific), % IACS 17
12

Otherwise Unclassified Properties

Base Metal Price, % relative 30
34
Density, g/cm3 8.6
8.7
Embodied Carbon, kg CO2/kg material 3.0
3.5
Embodied Energy, MJ/kg 49
56
Embodied Water, L/kg 330
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 58
65
Resilience: Unit (Modulus of Resilience), kJ/m3 83
150
Stiffness to Weight: Axial, points 7.2
7.0
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 8.2
10
Strength to Weight: Bending, points 10
12
Thermal Diffusivity, mm2/s 22
23
Thermal Shock Resistance, points 9.0
11

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0 to 0.0050
Antimony (Sb), % 0 to 0.020
0 to 0.020
Boron (B), % 0 to 0.1
0 to 0.1
Copper (Cu), % 82 to 89
86 to 89
Iron (Fe), % 0 to 0.4
0 to 0.4
Lead (Pb), % 0 to 0.090
0 to 0.090
Manganese (Mn), % 0 to 0.010
0 to 0.010
Nickel (Ni), % 0.5 to 2.0
0 to 1.0
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
0.1 to 0.65
Tin (Sn), % 2.0 to 4.0
7.5 to 8.5
Zinc (Zn), % 5.0 to 14
1.0 to 5.0
Zirconium (Zr), % 0 to 0.1
0 to 0.1
Residuals, % 0 to 0.7
0 to 0.7