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C70400 Copper-nickel vs. S40977 Stainless Steel

C70400 copper-nickel belongs to the copper alloys classification, while S40977 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is C70400 copper-nickel and the bottom bar is S40977 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 45
76
Tensile Strength: Ultimate (UTS), MPa 300 to 310
510
Tensile Strength: Yield (Proof), MPa 95 to 230
310

Thermal Properties

Latent Heat of Fusion, J/g 210
270
Maximum Temperature: Mechanical, °C 210
720
Melting Completion (Liquidus), °C 1120
1440
Melting Onset (Solidus), °C 1060
1400
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 64
25
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 14
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 32
6.5
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 3.0
1.9
Embodied Energy, MJ/kg 47
27
Embodied Water, L/kg 300
97

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 38 to 220
250
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
18
Strength to Weight: Bending, points 11 to 12
18
Thermal Diffusivity, mm2/s 18
6.7
Thermal Shock Resistance, points 10 to 11
18

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
10.5 to 12.5
Copper (Cu), % 89.8 to 93.6
0
Iron (Fe), % 1.3 to 1.7
83.9 to 89.2
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0.3 to 0.8
0 to 1.5
Nickel (Ni), % 4.8 to 6.2
0.3 to 1.0
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 0 to 1.0
0
Residuals, % 0 to 0.5
0