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C68100 Brass vs. C85700 Brass

Both C68100 brass and C85700 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a very high 96% 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 C68100 brass and the bottom bar is C85700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
100
Elongation at Break, % 29
17
Poisson's Ratio 0.3
0.31
Shear Modulus, GPa 40
40
Tensile Strength: Ultimate (UTS), MPa 380
310
Tensile Strength: Yield (Proof), MPa 140
110

Thermal Properties

Latent Heat of Fusion, J/g 170
170
Maximum Temperature: Mechanical, °C 120
120
Melting Completion (Liquidus), °C 890
940
Melting Onset (Solidus), °C 870
910
Specific Heat Capacity, J/kg-K 390
380
Thermal Conductivity, W/m-K 98
84
Thermal Expansion, µm/m-K 21
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
22
Electrical Conductivity: Equal Weight (Specific), % IACS 27
25

Otherwise Unclassified Properties

Base Metal Price, % relative 23
24
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 2.8
2.8
Embodied Energy, MJ/kg 47
47
Embodied Water, L/kg 330
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86
41
Resilience: Unit (Modulus of Resilience), kJ/m3 94
59
Stiffness to Weight: Axial, points 7.3
7.2
Stiffness to Weight: Bending, points 20
20
Strength to Weight: Axial, points 13
11
Strength to Weight: Bending, points 15
13
Thermal Diffusivity, mm2/s 32
27
Thermal Shock Resistance, points 13
10

Alloy Composition

Aluminum (Al), % 0 to 0.010
0 to 0.8
Copper (Cu), % 56 to 60
58 to 64
Iron (Fe), % 0.25 to 1.3
0 to 0.7
Lead (Pb), % 0 to 0.050
0.8 to 1.5
Manganese (Mn), % 0.010 to 0.5
0
Nickel (Ni), % 0
0 to 1.0
Silicon (Si), % 0.040 to 0.15
0 to 0.050
Tin (Sn), % 0.75 to 1.1
0.5 to 1.5
Zinc (Zn), % 36.4 to 43
32 to 40
Residuals, % 0
0 to 1.3