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C84000 Brass vs. C87200 Bronze

Both C84000 brass and C87200 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 89% of their average alloy composition in common.

For each property being compared, the top bar is C84000 brass and the bottom bar is C87200 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 65
85
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 27
30
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 42
43
Tensile Strength: Ultimate (UTS), MPa 250
380
Tensile Strength: Yield (Proof), MPa 140
170

Thermal Properties

Latent Heat of Fusion, J/g 190
260
Maximum Temperature: Mechanical, °C 170
200
Melting Completion (Liquidus), °C 1040
970
Melting Onset (Solidus), °C 940
860
Specific Heat Capacity, J/kg-K 380
410
Thermal Conductivity, W/m-K 72
28
Thermal Expansion, µm/m-K 18
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
6.0
Electrical Conductivity: Equal Weight (Specific), % IACS 17
6.3

Otherwise Unclassified Properties

Base Metal Price, % relative 30
29
Density, g/cm3 8.6
8.6
Embodied Carbon, kg CO2/kg material 3.0
2.7
Embodied Energy, MJ/kg 49
44
Embodied Water, L/kg 330
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 58
93
Resilience: Unit (Modulus of Resilience), kJ/m3 83
130
Stiffness to Weight: Axial, points 7.2
7.4
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 8.2
12
Strength to Weight: Bending, points 10
14
Thermal Diffusivity, mm2/s 22
8.0
Thermal Shock Resistance, points 9.0
14

Alloy Composition


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Aluminum (Al), % 0 to 0.0050
0 to 1.5
Antimony (Sb), % 0 to 0.020
0
Boron (B), % 0 to 0.1
0
Copper (Cu), % 82 to 89
89 to 99
Iron (Fe), % 0 to 0.4
0 to 2.5
Lead (Pb), % 0 to 0.090
0 to 0.5
Manganese (Mn), % 0 to 0.010
0 to 1.5
Nickel (Ni), % 0.5 to 2.0
0
Phosphorus (P), % 0 to 0.050
0 to 0.5
Silicon (Si), % 0 to 0.0050
1.0 to 5.0
Sulfur (S), % 0.1 to 0.65
0
Tin (Sn), % 2.0 to 4.0
0 to 1.0
Zinc (Zn), % 5.0 to 14
0 to 5.0
Zirconium (Zr), % 0 to 0.1
0
Residuals, % 0 to 0.7
0