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CC766S Brass vs. CC751S Brass

Both CC766S brass and CC751S 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.

For each property being compared, the top bar is CC766S brass and the bottom bar is CC751S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
130
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 28
5.6
Poisson's Ratio 0.31
0.31
Shear Modulus, GPa 40
40
Tensile Strength: Ultimate (UTS), MPa 500
450
Tensile Strength: Yield (Proof), MPa 190
320

Thermal Properties

Latent Heat of Fusion, J/g 180
190
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
390
Thermal Conductivity, W/m-K 89
110
Thermal Expansion, µm/m-K 20
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
25
Electrical Conductivity: Equal Weight (Specific), % IACS 36
28

Otherwise Unclassified Properties

Base Metal Price, % relative 24
24
Density, g/cm3 8.0
8.1
Embodied Carbon, kg CO2/kg material 2.8
2.8
Embodied Energy, MJ/kg 48
46
Embodied Water, L/kg 330
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
23
Resilience: Unit (Modulus of Resilience), kJ/m3 180
480
Stiffness to Weight: Axial, points 7.3
7.2
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 17
15
Strength to Weight: Bending, points 18
16
Thermal Diffusivity, mm2/s 28
35
Thermal Shock Resistance, points 17
15

Alloy Composition

Aluminum (Al), % 0.3 to 1.8
0 to 0.1
Antimony (Sb), % 0 to 0.1
0 to 0.5
Copper (Cu), % 58 to 64
62.7 to 66
Iron (Fe), % 0 to 0.5
0.25 to 0.5
Lead (Pb), % 0 to 0.5
0.8 to 2.2
Manganese (Mn), % 0 to 0.5
0 to 0.15
Nickel (Ni), % 0 to 2.0
0 to 0.8
Silicon (Si), % 0 to 0.6
0.65 to 1.1
Tin (Sn), % 0 to 0.5
0 to 0.8
Zinc (Zn), % 29.5 to 41.7
27.9 to 35.6