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C85700 Brass vs. C92500 Bronze

Both C85700 brass and C92500 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 64% of their average alloy composition in common.

For each property being compared, the top bar is C85700 brass and the bottom bar is C92500 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 17
11
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 40
40
Tensile Strength: Ultimate (UTS), MPa 310
310
Tensile Strength: Yield (Proof), MPa 110
190

Thermal Properties

Latent Heat of Fusion, J/g 170
190
Maximum Temperature: Mechanical, °C 120
170
Melting Completion (Liquidus), °C 940
980
Melting Onset (Solidus), °C 910
870
Specific Heat Capacity, J/kg-K 380
370
Thermal Conductivity, W/m-K 84
63
Thermal Expansion, µm/m-K 21
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
12
Electrical Conductivity: Equal Weight (Specific), % IACS 25
12

Otherwise Unclassified Properties

Base Metal Price, % relative 24
35
Density, g/cm3 8.0
8.7
Embodied Carbon, kg CO2/kg material 2.8
3.7
Embodied Energy, MJ/kg 47
61
Embodied Water, L/kg 330
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
30
Resilience: Unit (Modulus of Resilience), kJ/m3 59
170
Stiffness to Weight: Axial, points 7.2
6.8
Stiffness to Weight: Bending, points 20
18
Strength to Weight: Axial, points 11
9.8
Strength to Weight: Bending, points 13
12
Thermal Diffusivity, mm2/s 27
20
Thermal Shock Resistance, points 10
12

Alloy Composition


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Aluminum (Al), % 0 to 0.8
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Copper (Cu), % 58 to 64
85 to 88
Iron (Fe), % 0 to 0.7
0 to 0.3
Lead (Pb), % 0.8 to 1.5
1.0 to 1.5
Nickel (Ni), % 0 to 1.0
0.8 to 1.5
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0 to 0.050
0 to 0.0050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0.5 to 1.5
10 to 12
Zinc (Zn), % 32 to 40
0 to 0.5
Residuals, % 0 to 1.3
0 to 0.7