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CC381H Copper-nickel vs. CC493K Bronze

Both CC381H copper-nickel and CC493K bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 69% of their average alloy composition in common.

For each property being compared, the top bar is CC381H copper-nickel and the bottom bar is CC493K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 91
74
Elastic (Young's, Tensile) Modulus, GPa 140
100
Elongation at Break, % 20
14
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 52
39
Tensile Strength: Ultimate (UTS), MPa 380
270
Tensile Strength: Yield (Proof), MPa 140
140

Thermal Properties

Latent Heat of Fusion, J/g 240
180
Maximum Temperature: Mechanical, °C 260
160
Melting Completion (Liquidus), °C 1180
960
Melting Onset (Solidus), °C 1120
880
Specific Heat Capacity, J/kg-K 410
360
Thermal Conductivity, W/m-K 30
61
Thermal Expansion, µm/m-K 16
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.8
12
Electrical Conductivity: Equal Weight (Specific), % IACS 6.9
12

Otherwise Unclassified Properties

Base Metal Price, % relative 40
32
Density, g/cm3 8.9
8.9
Embodied Carbon, kg CO2/kg material 5.0
3.3
Embodied Energy, MJ/kg 73
53
Embodied Water, L/kg 280
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 60
33
Resilience: Unit (Modulus of Resilience), kJ/m3 68
89
Stiffness to Weight: Axial, points 8.6
6.5
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 12
8.6
Strength to Weight: Bending, points 13
11
Thermal Diffusivity, mm2/s 8.4
19
Thermal Shock Resistance, points 13
10

Alloy Composition

Aluminum (Al), % 0 to 0.010
0 to 0.010
Antimony (Sb), % 0
0 to 0.3
Carbon (C), % 0 to 0.030
0
Copper (Cu), % 64.5 to 69.9
79 to 86
Iron (Fe), % 0.5 to 1.5
0 to 0.2
Lead (Pb), % 0 to 0.030
5.0 to 8.0
Manganese (Mn), % 0.6 to 1.2
0
Nickel (Ni), % 29 to 31
0 to 2.0
Phosphorus (P), % 0 to 0.010
0 to 0.1
Silicon (Si), % 0 to 0.1
0 to 0.010
Sulfur (S), % 0 to 0.010
0 to 0.1
Tin (Sn), % 0
5.2 to 8.0
Zinc (Zn), % 0 to 0.5
2.0 to 5.0