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C85900 Brass vs. C86700 Bronze

Both C85900 brass and C86700 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a moderately high 94% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is C85900 brass and the bottom bar is C86700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 30
17
Poisson's Ratio 0.31
0.31
Shear Modulus, GPa 40
41
Tensile Strength: Ultimate (UTS), MPa 460
630
Tensile Strength: Yield (Proof), MPa 190
250

Thermal Properties

Latent Heat of Fusion, J/g 170
180
Maximum Temperature: Mechanical, °C 130
130
Melting Completion (Liquidus), °C 830
880
Melting Onset (Solidus), °C 790
860
Specific Heat Capacity, J/kg-K 390
400
Thermal Conductivity, W/m-K 89
89
Thermal Expansion, µm/m-K 20
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
17
Electrical Conductivity: Equal Weight (Specific), % IACS 28
19

Otherwise Unclassified Properties

Base Metal Price, % relative 24
23
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 2.9
2.9
Embodied Energy, MJ/kg 49
49
Embodied Water, L/kg 330
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
86
Resilience: Unit (Modulus of Resilience), kJ/m3 170
290
Stiffness to Weight: Axial, points 7.3
7.5
Stiffness to Weight: Bending, points 20
20
Strength to Weight: Axial, points 16
22
Strength to Weight: Bending, points 17
21
Thermal Diffusivity, mm2/s 29
28
Thermal Shock Resistance, points 16
21

Alloy Composition

Aluminum (Al), % 0.1 to 0.6
1.0 to 3.0
Antimony (Sb), % 0 to 0.2
0
Boron (B), % 0 to 0.2
0
Copper (Cu), % 58 to 62
55 to 60
Iron (Fe), % 0 to 0.5
1.0 to 3.0
Lead (Pb), % 0 to 0.090
0.5 to 1.5
Manganese (Mn), % 0 to 0.010
1.0 to 3.5
Nickel (Ni), % 0 to 1.5
0 to 1.0
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0 to 0.25
0
Sulfur (S), % 0.1 to 0.65
0
Tin (Sn), % 0 to 1.5
0 to 1.5
Zinc (Zn), % 31 to 41
30 to 38
Zirconium (Zr), % 0 to 0.2
0
Residuals, % 0
0 to 1.0