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C91100 Bronze vs. C68700 Brass

Both C91100 bronze and C68700 brass are copper alloys. They have 78% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is C91100 bronze and the bottom bar is C68700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 39
41
Tensile Strength: Ultimate (UTS), MPa 240
390
Tensile Strength: Yield (Proof), MPa 170
140

Thermal Properties

Latent Heat of Fusion, J/g 180
190
Maximum Temperature: Mechanical, °C 160
160
Melting Completion (Liquidus), °C 950
970
Melting Onset (Solidus), °C 820
930
Specific Heat Capacity, J/kg-K 360
400
Thermal Conductivity, W/m-K 63
100
Thermal Expansion, µm/m-K 18
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
23
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
25

Otherwise Unclassified Properties

Base Metal Price, % relative 38
26
Density, g/cm3 8.7
8.3
Embodied Carbon, kg CO2/kg material 4.2
2.8
Embodied Energy, MJ/kg 69
46
Embodied Water, L/kg 440
340

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 140
90
Stiffness to Weight: Axial, points 6.7
7.3
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 7.7
13
Strength to Weight: Bending, points 9.9
14
Thermal Diffusivity, mm2/s 20
30
Thermal Shock Resistance, points 9.1
13

Alloy Composition

Aluminum (Al), % 0 to 0.0050
1.8 to 2.5
Antimony (Sb), % 0 to 0.2
0
Arsenic (As), % 0
0.020 to 0.1
Copper (Cu), % 82 to 85
76 to 79
Iron (Fe), % 0 to 0.25
0 to 0.060
Lead (Pb), % 0 to 0.25
0 to 0.070
Nickel (Ni), % 0 to 0.5
0
Phosphorus (P), % 0 to 1.0
0
Silicon (Si), % 0 to 0.0050
0
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 15 to 17
0
Zinc (Zn), % 0 to 0.25
17.8 to 22.2
Residuals, % 0
0 to 0.5