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CC765S Brass vs. C87900 Brass

Both CC765S brass and C87900 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a moderately high 92% 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 CC765S brass and the bottom bar is C87900 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 21
25
Poisson's Ratio 0.31
0.31
Shear Modulus, GPa 42
41
Tensile Strength: Ultimate (UTS), MPa 540
480
Tensile Strength: Yield (Proof), MPa 220
240

Thermal Properties

Latent Heat of Fusion, J/g 180
190
Maximum Temperature: Mechanical, °C 140
130
Melting Completion (Liquidus), °C 860
930
Melting Onset (Solidus), °C 820
900
Specific Heat Capacity, J/kg-K 400
390
Thermal Conductivity, W/m-K 91
120
Thermal Expansion, µm/m-K 20
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
15
Electrical Conductivity: Equal Weight (Specific), % IACS 34
17

Otherwise Unclassified Properties

Base Metal Price, % relative 24
24
Density, g/cm3 8.0
8.1
Embodied Carbon, kg CO2/kg material 3.0
2.7
Embodied Energy, MJ/kg 51
46
Embodied Water, L/kg 330
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
100
Resilience: Unit (Modulus of Resilience), kJ/m3 220
270
Stiffness to Weight: Axial, points 7.6
7.3
Stiffness to Weight: Bending, points 20
20
Strength to Weight: Axial, points 19
17
Strength to Weight: Bending, points 18
17
Thermal Diffusivity, mm2/s 28
37
Thermal Shock Resistance, points 17
16

Alloy Composition

Aluminum (Al), % 0.5 to 2.5
0 to 0.15
Antimony (Sb), % 0 to 0.080
0 to 0.050
Arsenic (As), % 0
0 to 0.050
Copper (Cu), % 51 to 65
63 to 69.2
Iron (Fe), % 0.5 to 2.0
0 to 0.4
Lead (Pb), % 0 to 0.5
0 to 0.25
Manganese (Mn), % 0.3 to 3.0
0 to 0.15
Nickel (Ni), % 0 to 6.0
0 to 0.5
Phosphorus (P), % 0 to 0.030
0 to 0.010
Silicon (Si), % 0 to 0.1
0.8 to 1.2
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0 to 1.0
0 to 0.25
Zinc (Zn), % 19.8 to 47.7
30 to 36