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CC761S Brass vs. CC766S Brass

Both CC761S brass and CC766S brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 77% of their average alloy composition in common.

For each property being compared, the top bar is CC761S brass and the bottom bar is CC766S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
120
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 8.7
28
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 42
40
Tensile Strength: Ultimate (UTS), MPa 540
500
Tensile Strength: Yield (Proof), MPa 340
190

Thermal Properties

Latent Heat of Fusion, J/g 260
180
Maximum Temperature: Mechanical, °C 170
130
Melting Completion (Liquidus), °C 960
840
Melting Onset (Solidus), °C 910
800
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 27
89
Thermal Expansion, µm/m-K 18
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
32
Electrical Conductivity: Equal Weight (Specific), % IACS 43
36

Otherwise Unclassified Properties

Base Metal Price, % relative 27
24
Density, g/cm3 8.3
8.0
Embodied Carbon, kg CO2/kg material 2.7
2.8
Embodied Energy, MJ/kg 45
48
Embodied Water, L/kg 300
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
110
Resilience: Unit (Modulus of Resilience), kJ/m3 530
180
Stiffness to Weight: Axial, points 7.4
7.3
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 18
17
Strength to Weight: Bending, points 18
18
Thermal Diffusivity, mm2/s 8.0
28
Thermal Shock Resistance, points 19
17

Alloy Composition

Aluminum (Al), % 0 to 0.1
0.3 to 1.8
Antimony (Sb), % 0 to 0.050
0 to 0.1
Copper (Cu), % 78 to 83
58 to 64
Iron (Fe), % 0 to 0.6
0 to 0.5
Lead (Pb), % 0 to 0.8
0 to 0.5
Manganese (Mn), % 0 to 0.2
0 to 0.5
Nickel (Ni), % 0 to 1.0
0 to 2.0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 3.0 to 5.0
0 to 0.6
Tin (Sn), % 0 to 0.3
0 to 0.5
Zinc (Zn), % 8.9 to 19
29.5 to 41.7