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C91100 Bronze vs. C97600 Dairy Metal

Both C91100 bronze and C97600 dairy metal are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 70% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is C91100 bronze and the bottom bar is C97600 dairy metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
120
Elongation at Break, % 2.0
11
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 39
46
Tensile Strength: Ultimate (UTS), MPa 240
310
Tensile Strength: Yield (Proof), MPa 170
140

Thermal Properties

Latent Heat of Fusion, J/g 180
210
Maximum Temperature: Mechanical, °C 160
210
Melting Completion (Liquidus), °C 950
1140
Melting Onset (Solidus), °C 820
1110
Specific Heat Capacity, J/kg-K 360
380
Thermal Conductivity, W/m-K 63
22
Thermal Expansion, µm/m-K 18
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
5.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
5.1

Otherwise Unclassified Properties

Base Metal Price, % relative 38
37
Density, g/cm3 8.7
8.8
Embodied Carbon, kg CO2/kg material 4.2
4.6
Embodied Energy, MJ/kg 69
69
Embodied Water, L/kg 440
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4
29
Resilience: Unit (Modulus of Resilience), kJ/m3 140
85
Stiffness to Weight: Axial, points 6.7
7.7
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 7.7
9.8
Strength to Weight: Bending, points 9.9
12
Thermal Diffusivity, mm2/s 20
6.5
Thermal Shock Resistance, points 9.1
11

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0 to 0.0050
Antimony (Sb), % 0 to 0.2
0 to 0.25
Copper (Cu), % 82 to 85
63 to 67
Iron (Fe), % 0 to 0.25
0 to 1.5
Lead (Pb), % 0 to 0.25
3.0 to 5.0
Nickel (Ni), % 0 to 0.5
19 to 21.5
Phosphorus (P), % 0 to 1.0
0 to 0.050
Silicon (Si), % 0 to 0.0050
0 to 0.15
Sulfur (S), % 0 to 0.050
0 to 0.080
Tin (Sn), % 15 to 17
3.5 to 4.0
Zinc (Zn), % 0 to 0.25
3.0 to 9.0
Residuals, % 0
0 to 0.3