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C68100 Brass vs. C90400 Bronze

Both C68100 brass and C90400 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 62% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is C68100 brass and the bottom bar is C90400 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 29
24
Poisson's Ratio 0.3
0.34
Shear Modulus, GPa 40
41
Tensile Strength: Ultimate (UTS), MPa 380
310
Tensile Strength: Yield (Proof), MPa 140
180

Thermal Properties

Latent Heat of Fusion, J/g 170
190
Maximum Temperature: Mechanical, °C 120
170
Melting Completion (Liquidus), °C 890
990
Melting Onset (Solidus), °C 870
850
Specific Heat Capacity, J/kg-K 390
370
Thermal Conductivity, W/m-K 98
75
Thermal Expansion, µm/m-K 21
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
12
Electrical Conductivity: Equal Weight (Specific), % IACS 27
12

Otherwise Unclassified Properties

Base Metal Price, % relative 23
34
Density, g/cm3 7.9
8.7
Embodied Carbon, kg CO2/kg material 2.8
3.5
Embodied Energy, MJ/kg 47
56
Embodied Water, L/kg 330
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86
65
Resilience: Unit (Modulus of Resilience), kJ/m3 94
150
Stiffness to Weight: Axial, points 7.3
7.0
Stiffness to Weight: Bending, points 20
18
Strength to Weight: Axial, points 13
10
Strength to Weight: Bending, points 15
12
Thermal Diffusivity, mm2/s 32
23
Thermal Shock Resistance, points 13
11

Alloy Composition

Aluminum (Al), % 0 to 0.010
0 to 0.0050
Antimony (Sb), % 0
0 to 0.020
Boron (B), % 0
0 to 0.1
Copper (Cu), % 56 to 60
86 to 89
Iron (Fe), % 0.25 to 1.3
0 to 0.4
Lead (Pb), % 0 to 0.050
0 to 0.090
Manganese (Mn), % 0.010 to 0.5
0 to 0.010
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0.040 to 0.15
0 to 0.0050
Sulfur (S), % 0
0.1 to 0.65
Tin (Sn), % 0.75 to 1.1
7.5 to 8.5
Zinc (Zn), % 36.4 to 43
1.0 to 5.0
Zirconium (Zr), % 0
0 to 0.1
Residuals, % 0
0 to 0.7