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C70400 Copper-nickel vs. S32050 Stainless Steel

C70400 copper-nickel belongs to the copper alloys classification, while S32050 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is C70400 copper-nickel and the bottom bar is S32050 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
210
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 45
81
Tensile Strength: Ultimate (UTS), MPa 300 to 310
770
Tensile Strength: Yield (Proof), MPa 95 to 230
370

Thermal Properties

Latent Heat of Fusion, J/g 210
310
Maximum Temperature: Mechanical, °C 210
1100
Melting Completion (Liquidus), °C 1120
1460
Melting Onset (Solidus), °C 1060
1410
Specific Heat Capacity, J/kg-K 390
470
Thermal Conductivity, W/m-K 64
12
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 14
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 32
31
Density, g/cm3 8.9
8.0
Embodied Carbon, kg CO2/kg material 3.0
6.0
Embodied Energy, MJ/kg 47
81
Embodied Water, L/kg 300
210

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 38 to 220
330
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 9.3 to 9.8
27
Strength to Weight: Bending, points 11 to 12
23
Thermal Diffusivity, mm2/s 18
3.3
Thermal Shock Resistance, points 10 to 11
17

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
22 to 24
Copper (Cu), % 89.8 to 93.6
0 to 0.4
Iron (Fe), % 1.3 to 1.7
43.1 to 51.8
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0.3 to 0.8
0 to 1.5
Molybdenum (Mo), % 0
6.0 to 6.6
Nickel (Ni), % 4.8 to 6.2
20 to 23
Nitrogen (N), % 0
0.21 to 0.32
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Zinc (Zn), % 0 to 1.0
0
Residuals, % 0 to 0.5
0