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C85700 Brass vs. C96800 Copper

Both C85700 brass and C96800 copper are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 63% of their average alloy composition in common.

For each property being compared, the top bar is C85700 brass and the bottom bar is C96800 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
120
Elongation at Break, % 17
3.4
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 40
46
Tensile Strength: Ultimate (UTS), MPa 310
1010
Tensile Strength: Yield (Proof), MPa 110
860

Thermal Properties

Latent Heat of Fusion, J/g 170
220
Maximum Temperature: Mechanical, °C 120
220
Melting Completion (Liquidus), °C 940
1120
Melting Onset (Solidus), °C 910
1060
Specific Heat Capacity, J/kg-K 380
390
Thermal Conductivity, W/m-K 84
52
Thermal Expansion, µm/m-K 21
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
10
Electrical Conductivity: Equal Weight (Specific), % IACS 25
10

Otherwise Unclassified Properties

Base Metal Price, % relative 24
34
Density, g/cm3 8.0
8.9
Embodied Carbon, kg CO2/kg material 2.8
3.4
Embodied Energy, MJ/kg 47
52
Embodied Water, L/kg 330
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
33
Resilience: Unit (Modulus of Resilience), kJ/m3 59
3000
Stiffness to Weight: Axial, points 7.2
7.6
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 11
32
Strength to Weight: Bending, points 13
25
Thermal Diffusivity, mm2/s 27
15
Thermal Shock Resistance, points 10
35

Alloy Composition


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Aluminum (Al), % 0 to 0.8
0 to 0.1
Antimony (Sb), % 0
0 to 0.020
Copper (Cu), % 58 to 64
87.1 to 90.5
Iron (Fe), % 0 to 0.7
0 to 0.5
Lead (Pb), % 0.8 to 1.5
0 to 0.0050
Manganese (Mn), % 0
0.050 to 0.3
Nickel (Ni), % 0 to 1.0
9.5 to 10.5
Phosphorus (P), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.050
0
Sulfur (S), % 0
0 to 0.0025
Tin (Sn), % 0.5 to 1.5
0
Zinc (Zn), % 32 to 40
0 to 1.0
Residuals, % 0 to 1.3
0 to 0.5