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C68100 Brass vs. CC751S Brass

Both C68100 brass and CC751S brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a moderately high 91% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is C68100 brass and the bottom bar is CC751S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 29
5.6
Poisson's Ratio 0.3
0.31
Shear Modulus, GPa 40
40
Tensile Strength: Ultimate (UTS), MPa 380
450
Tensile Strength: Yield (Proof), MPa 140
320

Thermal Properties

Latent Heat of Fusion, J/g 170
190
Maximum Temperature: Mechanical, °C 120
130
Melting Completion (Liquidus), °C 890
850
Melting Onset (Solidus), °C 870
810
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 98
110
Thermal Expansion, µm/m-K 21
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
25
Electrical Conductivity: Equal Weight (Specific), % IACS 27
28

Otherwise Unclassified Properties

Base Metal Price, % relative 23
24
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 2.8
2.8
Embodied Energy, MJ/kg 47
46
Embodied Water, L/kg 330
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86
23
Resilience: Unit (Modulus of Resilience), kJ/m3 94
480
Stiffness to Weight: Axial, points 7.3
7.2
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 13
15
Strength to Weight: Bending, points 15
16
Thermal Diffusivity, mm2/s 32
35
Thermal Shock Resistance, points 13
15

Alloy Composition


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Aluminum (Al), % 0 to 0.010
0 to 0.1
Antimony (Sb), % 0
0 to 0.5
Copper (Cu), % 56 to 60
62.7 to 66
Iron (Fe), % 0.25 to 1.3
0.25 to 0.5
Lead (Pb), % 0 to 0.050
0.8 to 2.2
Manganese (Mn), % 0.010 to 0.5
0 to 0.15
Nickel (Ni), % 0
0 to 0.8
Silicon (Si), % 0.040 to 0.15
0.65 to 1.1
Tin (Sn), % 0.75 to 1.1
0 to 0.8
Zinc (Zn), % 36.4 to 43
27.9 to 35.6
Residuals, % 0 to 0.5
0