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CC766S Brass vs. CC764S Brass

Both CC766S brass and CC764S brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a very high 97% of their average alloy composition in common.

For each property being compared, the top bar is CC766S brass and the bottom bar is CC764S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
160
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 28
15
Poisson's Ratio 0.31
0.31
Shear Modulus, GPa 40
41
Tensile Strength: Ultimate (UTS), MPa 500
680
Tensile Strength: Yield (Proof), MPa 190
290

Thermal Properties

Latent Heat of Fusion, J/g 180
180
Maximum Temperature: Mechanical, °C 130
130
Melting Completion (Liquidus), °C 840
850
Melting Onset (Solidus), °C 800
810
Specific Heat Capacity, J/kg-K 390
400
Thermal Conductivity, W/m-K 89
94
Thermal Expansion, µm/m-K 20
20

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 24
23
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 2.8
2.9
Embodied Energy, MJ/kg 48
49
Embodied Water, L/kg 330
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
80
Resilience: Unit (Modulus of Resilience), kJ/m3 180
390
Stiffness to Weight: Axial, points 7.3
7.6
Stiffness to Weight: Bending, points 20
20
Strength to Weight: Axial, points 17
24
Strength to Weight: Bending, points 18
22
Thermal Diffusivity, mm2/s 28
30
Thermal Shock Resistance, points 17
22

Alloy Composition

Aluminum (Al), % 0.3 to 1.8
1.0 to 3.0
Antimony (Sb), % 0 to 0.1
0 to 0.050
Copper (Cu), % 58 to 64
52 to 66
Iron (Fe), % 0 to 0.5
0.5 to 2.5
Lead (Pb), % 0 to 0.5
0 to 0.3
Manganese (Mn), % 0 to 0.5
0.3 to 4.0
Nickel (Ni), % 0 to 2.0
0 to 3.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.6
0 to 0.1
Tin (Sn), % 0 to 0.5
0 to 0.3
Zinc (Zn), % 29.5 to 41.7
20.7 to 50.2