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C92700 Bronze vs. C85800 Brass

Both C92700 bronze and C85800 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 66% of their average alloy composition in common.

For each property being compared, the top bar is C92700 bronze and the bottom bar is C85800 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 9.1
15
Poisson's Ratio 0.34
0.31
Rockwell B Hardness 77
56
Shear Modulus, GPa 40
40
Tensile Strength: Ultimate (UTS), MPa 290
380
Tensile Strength: Yield (Proof), MPa 150
210

Thermal Properties

Latent Heat of Fusion, J/g 190
170
Maximum Temperature: Mechanical, °C 170
120
Melting Completion (Liquidus), °C 980
900
Melting Onset (Solidus), °C 840
870
Specific Heat Capacity, J/kg-K 370
380
Thermal Conductivity, W/m-K 47
84
Thermal Expansion, µm/m-K 18
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
20
Electrical Conductivity: Equal Weight (Specific), % IACS 11
22

Otherwise Unclassified Properties

Base Metal Price, % relative 35
24
Density, g/cm3 8.7
8.0
Embodied Carbon, kg CO2/kg material 3.6
2.8
Embodied Energy, MJ/kg 58
47
Embodied Water, L/kg 390
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
48
Resilience: Unit (Modulus of Resilience), kJ/m3 110
210
Stiffness to Weight: Axial, points 6.8
7.2
Stiffness to Weight: Bending, points 18
20
Strength to Weight: Axial, points 9.1
13
Strength to Weight: Bending, points 11
15
Thermal Diffusivity, mm2/s 15
27
Thermal Shock Resistance, points 11
13

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0 to 0.55
Antimony (Sb), % 0 to 0.25
0 to 0.050
Arsenic (As), % 0
0 to 0.050
Copper (Cu), % 86 to 89
57 to 69
Iron (Fe), % 0 to 0.2
0 to 0.5
Lead (Pb), % 1.0 to 2.5
0 to 1.5
Manganese (Mn), % 0
0 to 0.25
Nickel (Ni), % 0 to 1.0
0 to 0.5
Phosphorus (P), % 0 to 1.5
0 to 0.010
Silicon (Si), % 0 to 0.0050
0 to 0.25
Sulfur (S), % 0 to 0.050
0 to 0.050
Tin (Sn), % 9.0 to 11
0 to 1.5
Zinc (Zn), % 0 to 0.7
31 to 41
Residuals, % 0
0 to 1.3