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C94700 Bronze vs. C87500 Brass

Both C94700 bronze and C87500 brass are copper alloys. They have 84% of their average alloy composition in common.

For each property being compared, the top bar is C94700 bronze and the bottom bar is C87500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 7.9 to 32
18
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 43
42
Tensile Strength: Ultimate (UTS), MPa 350 to 590
460
Tensile Strength: Yield (Proof), MPa 160 to 400
190

Thermal Properties

Latent Heat of Fusion, J/g 200
260
Maximum Temperature: Mechanical, °C 190
170
Melting Completion (Liquidus), °C 1030
920
Melting Onset (Solidus), °C 900
820
Specific Heat Capacity, J/kg-K 380
410
Thermal Conductivity, W/m-K 54
28
Thermal Expansion, µm/m-K 17
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
6.7
Electrical Conductivity: Equal Weight (Specific), % IACS 12
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 34
27
Density, g/cm3 8.8
8.3
Embodied Carbon, kg CO2/kg material 3.5
2.7
Embodied Energy, MJ/kg 56
44
Embodied Water, L/kg 350
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41 to 89
67
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 700
160
Stiffness to Weight: Axial, points 7.3
7.4
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 11 to 19
16
Strength to Weight: Bending, points 13 to 18
16
Thermal Diffusivity, mm2/s 16
8.3
Thermal Shock Resistance, points 12 to 21
17

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0 to 0.5
Antimony (Sb), % 0 to 0.15
0
Copper (Cu), % 85 to 90
79 to 85
Iron (Fe), % 0 to 0.25
0
Lead (Pb), % 0 to 0.1
0 to 0.5
Manganese (Mn), % 0 to 0.2
0
Nickel (Ni), % 4.5 to 6.0
0
Phosphorus (P), % 0 to 0.050
0
Silicon (Si), % 0 to 0.0050
3.0 to 5.0
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 4.5 to 6.0
0
Zinc (Zn), % 1.0 to 2.5
12 to 16
Residuals, % 0
0 to 0.5