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CC761S Brass vs. CC767S Brass

Both CC761S brass and CC767S brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 76% of their average alloy composition in common.

For each property being compared, the top bar is CC761S brass and the bottom bar is CC767S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
86
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 8.7
34
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 42
40
Tensile Strength: Ultimate (UTS), MPa 540
430
Tensile Strength: Yield (Proof), MPa 340
150

Thermal Properties

Latent Heat of Fusion, J/g 260
180
Maximum Temperature: Mechanical, °C 170
120
Melting Completion (Liquidus), °C 960
840
Melting Onset (Solidus), °C 910
790
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 27
110
Thermal Expansion, µm/m-K 18
21

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
23
Density, g/cm3 8.3
8.0
Embodied Carbon, kg CO2/kg material 2.7
2.7
Embodied Energy, MJ/kg 45
47
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
100
Stiffness to Weight: Axial, points 7.4
7.3
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 18
15
Strength to Weight: Bending, points 18
16
Thermal Diffusivity, mm2/s 8.0
34
Thermal Shock Resistance, points 19
14

Alloy Composition

Aluminum (Al), % 0 to 0.1
0.1 to 0.8
Antimony (Sb), % 0 to 0.050
0
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 0.1
Manganese (Mn), % 0 to 0.2
0 to 0.5
Nickel (Ni), % 0 to 1.0
0 to 1.0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 3.0 to 5.0
0 to 0.2
Tin (Sn), % 0 to 0.3
0 to 0.1
Zinc (Zn), % 8.9 to 19
32.8 to 41.9