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CC755S Brass vs. C87900 Brass

Both CC755S brass and C87900 brass 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 (2, in this case) are not shown.

For each property being compared, the top bar is CC755S brass and the bottom bar is C87900 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 9.5
25
Poisson's Ratio 0.31
0.31
Shear Modulus, GPa 40
41
Tensile Strength: Ultimate (UTS), MPa 390
480
Tensile Strength: Yield (Proof), MPa 250
240

Thermal Properties

Latent Heat of Fusion, J/g 170
190
Maximum Temperature: Mechanical, °C 120
130
Melting Completion (Liquidus), °C 820
930
Melting Onset (Solidus), °C 780
900
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 120
120
Thermal Expansion, µm/m-K 21
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
15
Electrical Conductivity: Equal Weight (Specific), % IACS 30
17

Otherwise Unclassified Properties

Base Metal Price, % relative 23
24
Density, g/cm3 8.1
8.1
Embodied Carbon, kg CO2/kg material 2.7
2.7
Embodied Energy, MJ/kg 46
46
Embodied Water, L/kg 330
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 33
100
Resilience: Unit (Modulus of Resilience), kJ/m3 290
270
Stiffness to Weight: Axial, points 7.1
7.3
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 14
17
Strength to Weight: Bending, points 15
17
Thermal Diffusivity, mm2/s 38
37
Thermal Shock Resistance, points 13
16

Alloy Composition

Aluminum (Al), % 0.4 to 0.7
0 to 0.15
Antimony (Sb), % 0
0 to 0.050
Arsenic (As), % 0
0 to 0.050
Copper (Cu), % 59.5 to 61
63 to 69.2
Iron (Fe), % 0.050 to 0.2
0 to 0.4
Lead (Pb), % 1.2 to 1.7
0 to 0.25
Manganese (Mn), % 0 to 0.050
0 to 0.15
Nickel (Ni), % 0 to 0.2
0 to 0.5
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 0.050
0.8 to 1.2
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0 to 0.3
0 to 0.25
Zinc (Zn), % 35.8 to 38.9
30 to 36