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C87700 Bronze vs. C37000 Muntz Metal

Both C87700 bronze and C37000 Muntz Metal are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 69% 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 C87700 bronze and the bottom bar is C37000 Muntz Metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 3.6
40
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 42
39
Tensile Strength: Ultimate (UTS), MPa 300
400
Tensile Strength: Yield (Proof), MPa 120
160

Thermal Properties

Latent Heat of Fusion, J/g 250
170
Maximum Temperature: Mechanical, °C 180
120
Melting Completion (Liquidus), °C 980
900
Melting Onset (Solidus), °C 900
890
Specific Heat Capacity, J/kg-K 400
380
Thermal Conductivity, W/m-K 120
120
Thermal Expansion, µm/m-K 18
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
27
Electrical Conductivity: Equal Weight (Specific), % IACS 48
30

Otherwise Unclassified Properties

Base Metal Price, % relative 29
23
Density, g/cm3 8.5
8.1
Embodied Carbon, kg CO2/kg material 2.7
2.7
Embodied Energy, MJ/kg 45
45
Embodied Water, L/kg 310
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.6
130
Resilience: Unit (Modulus of Resilience), kJ/m3 64
120
Stiffness to Weight: Axial, points 7.4
7.2
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 9.8
14
Strength to Weight: Bending, points 12
15
Thermal Diffusivity, mm2/s 34
39
Thermal Shock Resistance, points 11
13

Alloy Composition


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Antimony (Sb), % 0 to 0.1
0
Copper (Cu), % 87.5 to 90.5
59 to 62
Iron (Fe), % 0 to 0.5
0 to 0.15
Lead (Pb), % 0 to 0.090
0.8 to 1.5
Manganese (Mn), % 0 to 0.8
0
Nickel (Ni), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.15
0
Silicon (Si), % 2.5 to 3.5
0
Tin (Sn), % 0 to 2.0
0
Zinc (Zn), % 7.0 to 9.0
36 to 40.2
Residuals, % 0 to 0.8
0 to 0.4