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C87200 Bronze vs. C84000 Brass

Both C87200 bronze and C84000 brass 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 C87200 bronze and the bottom bar is C84000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition


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