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CC751S Brass vs. CC380H Copper-nickel

Both CC751S brass and CC380H copper-nickel are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 66% of their average alloy composition in common.

For each property being compared, the top bar is CC751S brass and the bottom bar is CC380H copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130
80
Elastic (Young's, Tensile) Modulus, GPa 110
120
Elongation at Break, % 5.6
26
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 40
47
Tensile Strength: Ultimate (UTS), MPa 450
310
Tensile Strength: Yield (Proof), MPa 320
120

Thermal Properties

Latent Heat of Fusion, J/g 190
220
Maximum Temperature: Mechanical, °C 130
220
Melting Completion (Liquidus), °C 850
1130
Melting Onset (Solidus), °C 810
1080
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 110
46
Thermal Expansion, µm/m-K 20
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
11
Electrical Conductivity: Equal Weight (Specific), % IACS 28
11

Otherwise Unclassified Properties

Base Metal Price, % relative 24
36
Density, g/cm3 8.1
8.9
Embodied Carbon, kg CO2/kg material 2.8
3.8
Embodied Energy, MJ/kg 46
58
Embodied Water, L/kg 330
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
65
Resilience: Unit (Modulus of Resilience), kJ/m3 480
59
Stiffness to Weight: Axial, points 7.2
7.8
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 15
9.8
Strength to Weight: Bending, points 16
12
Thermal Diffusivity, mm2/s 35
13
Thermal Shock Resistance, points 15
11

Alloy Composition

Aluminum (Al), % 0 to 0.1
0 to 0.010
Antimony (Sb), % 0 to 0.5
0
Copper (Cu), % 62.7 to 66
84.5 to 89
Iron (Fe), % 0.25 to 0.5
1.0 to 1.8
Lead (Pb), % 0.8 to 2.2
0 to 0.030
Manganese (Mn), % 0 to 0.15
1.0 to 1.5
Nickel (Ni), % 0 to 0.8
9.0 to 11
Niobium (Nb), % 0
0 to 1.0
Silicon (Si), % 0.65 to 1.1
0 to 0.1
Tin (Sn), % 0 to 0.8
0
Zinc (Zn), % 27.9 to 35.6
0 to 0.5