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CC767S Brass vs. CC751S Brass

Both CC767S 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 CC767S brass and the bottom bar is CC751S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 86
130
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 34
5.6
Poisson's Ratio 0.31
0.31
Shear Modulus, GPa 40
40
Tensile Strength: Ultimate (UTS), MPa 430
450
Tensile Strength: Yield (Proof), MPa 150
320

Thermal Properties

Latent Heat of Fusion, J/g 180
190
Maximum Temperature: Mechanical, °C 120
130
Melting Completion (Liquidus), °C 840
850
Melting Onset (Solidus), °C 790
810
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 110
110
Thermal Expansion, µm/m-K 21
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 23
24
Density, g/cm3 8.0
8.1
Embodied Carbon, kg CO2/kg material 2.7
2.8
Embodied Energy, MJ/kg 47
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 100
480
Stiffness to Weight: Axial, points 7.3
7.2
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 15
15
Strength to Weight: Bending, points 16
16
Thermal Diffusivity, mm2/s 34
35
Thermal Shock Resistance, points 14
15

Alloy Composition

Aluminum (Al), % 0.1 to 0.8
0 to 0.1
Antimony (Sb), % 0
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 0.1
0.8 to 2.2
Manganese (Mn), % 0 to 0.5
0 to 0.15
Nickel (Ni), % 0 to 1.0
0 to 0.8
Silicon (Si), % 0 to 0.2
0.65 to 1.1
Tin (Sn), % 0 to 0.1
0 to 0.8
Zinc (Zn), % 32.8 to 41.9
27.9 to 35.6