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C21000 Brass vs. C87200 Bronze

Both C21000 brass and C87200 bronze are copper alloys. They have a very high 97% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is C21000 brass and the bottom bar is C87200 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 2.9 to 50
30
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 43
43
Tensile Strength: Ultimate (UTS), MPa 240 to 450
380
Tensile Strength: Yield (Proof), MPa 69 to 440
170

Thermal Properties

Latent Heat of Fusion, J/g 200
260
Maximum Temperature: Mechanical, °C 190
200
Melting Completion (Liquidus), °C 1070
970
Melting Onset (Solidus), °C 1050
860
Specific Heat Capacity, J/kg-K 390
410
Thermal Conductivity, W/m-K 230
28
Thermal Expansion, µm/m-K 18
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 56
6.0
Electrical Conductivity: Equal Weight (Specific), % IACS 57
6.3

Otherwise Unclassified Properties

Base Metal Price, % relative 30
29
Density, g/cm3 8.8
8.6
Embodied Carbon, kg CO2/kg material 2.6
2.7
Embodied Energy, MJ/kg 42
44
Embodied Water, L/kg 310
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 100
93
Resilience: Unit (Modulus of Resilience), kJ/m3 21 to 830
130
Stiffness to Weight: Axial, points 7.2
7.4
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 7.4 to 14
12
Strength to Weight: Bending, points 9.6 to 15
14
Thermal Diffusivity, mm2/s 69
8.0
Thermal Shock Resistance, points 8.1 to 15
14

Alloy Composition

Aluminum (Al), % 0
0 to 1.5
Copper (Cu), % 94 to 96
89 to 99
Iron (Fe), % 0 to 0.050
0 to 2.5
Lead (Pb), % 0 to 0.030
0 to 0.5
Manganese (Mn), % 0
0 to 1.5
Phosphorus (P), % 0
0 to 0.5
Silicon (Si), % 0
1.0 to 5.0
Tin (Sn), % 0
0 to 1.0
Zinc (Zn), % 3.7 to 6.0
0 to 5.0
Residuals, % 0 to 0.2
0