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C68000 Brass vs. C97600 Dairy Metal

Both C68000 brass and C97600 dairy metal 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. There are 26 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is C68000 brass and the bottom bar is C97600 dairy metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
120
Elongation at Break, % 27
11
Poisson's Ratio 0.3
0.33
Shear Modulus, GPa 40
46
Tensile Strength: Ultimate (UTS), MPa 390
310
Tensile Strength: Yield (Proof), MPa 140
140

Thermal Properties

Latent Heat of Fusion, J/g 170
210
Maximum Temperature: Mechanical, °C 120
210
Melting Completion (Liquidus), °C 880
1140
Melting Onset (Solidus), °C 870
1110
Specific Heat Capacity, J/kg-K 390
380
Thermal Conductivity, W/m-K 96
22
Thermal Expansion, µm/m-K 21
17

Otherwise Unclassified Properties

Base Metal Price, % relative 23
37
Density, g/cm3 8.0
8.8
Embodied Carbon, kg CO2/kg material 2.8
4.6
Embodied Energy, MJ/kg 48
69
Embodied Water, L/kg 330
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 82
29
Resilience: Unit (Modulus of Resilience), kJ/m3 95
85
Stiffness to Weight: Axial, points 7.3
7.7
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 14
9.8
Strength to Weight: Bending, points 15
12
Thermal Diffusivity, mm2/s 31
6.5
Thermal Shock Resistance, points 13
11

Alloy Composition


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Aluminum (Al), % 0 to 0.010
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Copper (Cu), % 56 to 60
63 to 67
Iron (Fe), % 0.25 to 1.3
0 to 1.5
Lead (Pb), % 0 to 0.050
3.0 to 5.0
Manganese (Mn), % 0.010 to 0.5
0
Nickel (Ni), % 0.2 to 0.8
19 to 21.5
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0.040 to 0.15
0 to 0.15
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0.75 to 1.1
3.5 to 4.0
Zinc (Zn), % 35.6 to 42.8
3.0 to 9.0
Residuals, % 0 to 0.5
0 to 0.3