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CC755S Brass vs. CC380H Copper-nickel

Both CC755S brass and CC380H copper-nickel are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 61% of their average alloy composition in common.

For each property being compared, the top bar is CC755S brass and the bottom bar is CC380H copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
80
Elastic (Young's, Tensile) Modulus, GPa 100
120
Elongation at Break, % 9.5
26
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 40
47
Tensile Strength: Ultimate (UTS), MPa 390
310
Tensile Strength: Yield (Proof), MPa 250
120

Thermal Properties

Latent Heat of Fusion, J/g 170
220
Maximum Temperature: Mechanical, °C 120
220
Melting Completion (Liquidus), °C 820
1130
Melting Onset (Solidus), °C 780
1080
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 120
46
Thermal Expansion, µm/m-K 21
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
11
Electrical Conductivity: Equal Weight (Specific), % IACS 30
11

Otherwise Unclassified Properties

Base Metal Price, % relative 23
36
Density, g/cm3 8.1
8.9
Embodied Carbon, kg CO2/kg material 2.7
3.8
Embodied Energy, MJ/kg 46
58
Embodied Water, L/kg 330
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 33
65
Resilience: Unit (Modulus of Resilience), kJ/m3 290
59
Stiffness to Weight: Axial, points 7.1
7.8
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 14
9.8
Strength to Weight: Bending, points 15
12
Thermal Diffusivity, mm2/s 38
13
Thermal Shock Resistance, points 13
11

Alloy Composition

Aluminum (Al), % 0.4 to 0.7
0 to 0.010
Copper (Cu), % 59.5 to 61
84.5 to 89
Iron (Fe), % 0.050 to 0.2
1.0 to 1.8
Lead (Pb), % 1.2 to 1.7
0 to 0.030
Manganese (Mn), % 0 to 0.050
1.0 to 1.5
Nickel (Ni), % 0 to 0.2
9.0 to 11
Niobium (Nb), % 0
0 to 1.0
Silicon (Si), % 0 to 0.050
0 to 0.1
Tin (Sn), % 0 to 0.3
0
Zinc (Zn), % 35.8 to 38.9
0 to 0.5