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C94300 Bronze vs. C97600 Dairy Metal

Both C94300 bronze and C97600 dairy metal are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 74% of their average alloy composition in common.

For each property being compared, the top bar is C94300 bronze and the bottom bar is C97600 dairy metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
120
Elongation at Break, % 9.7
11
Poisson's Ratio 0.36
0.33
Shear Modulus, GPa 32
46
Tensile Strength: Ultimate (UTS), MPa 180
310
Tensile Strength: Yield (Proof), MPa 120
140

Thermal Properties

Latent Heat of Fusion, J/g 150
210
Maximum Temperature: Mechanical, °C 110
210
Melting Completion (Liquidus), °C 820
1140
Melting Onset (Solidus), °C 760
1110
Specific Heat Capacity, J/kg-K 320
380
Thermal Conductivity, W/m-K 63
22
Thermal Expansion, µm/m-K 20
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
5.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
5.1

Otherwise Unclassified Properties

Base Metal Price, % relative 28
37
Density, g/cm3 9.3
8.8
Embodied Carbon, kg CO2/kg material 2.9
4.6
Embodied Energy, MJ/kg 47
69
Embodied Water, L/kg 370
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
29
Resilience: Unit (Modulus of Resilience), kJ/m3 77
85
Stiffness to Weight: Axial, points 5.2
7.7
Stiffness to Weight: Bending, points 16
19
Strength to Weight: Axial, points 5.2
9.8
Strength to Weight: Bending, points 7.4
12
Thermal Diffusivity, mm2/s 21
6.5
Thermal Shock Resistance, points 7.1
11

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0 to 0.0050
Antimony (Sb), % 0 to 0.8
0 to 0.25
Copper (Cu), % 67 to 72
63 to 67
Iron (Fe), % 0 to 0.15
0 to 1.5
Lead (Pb), % 23 to 27
3.0 to 5.0
Nickel (Ni), % 0 to 1.0
19 to 21.5
Phosphorus (P), % 0 to 1.5
0 to 0.050
Silicon (Si), % 0 to 0.0050
0 to 0.15
Sulfur (S), % 0 to 0.080
0 to 0.080
Tin (Sn), % 4.5 to 6.0
3.5 to 4.0
Zinc (Zn), % 0 to 0.8
3.0 to 9.0
Residuals, % 0
0 to 0.3