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C71000 Copper-nickel vs. S41050 Stainless Steel

C71000 copper-nickel belongs to the copper alloys classification, while S41050 stainless steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is C71000 copper-nickel and the bottom bar is S41050 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 130
190
Poisson's Ratio 0.33
0.28
Rockwell B Hardness 59 to 85
77
Shear Modulus, GPa 49
76
Tensile Strength: Ultimate (UTS), MPa 320 to 560
470

Thermal Properties

Latent Heat of Fusion, J/g 230
270
Maximum Temperature: Mechanical, °C 240
720
Melting Completion (Liquidus), °C 1200
1440
Melting Onset (Solidus), °C 1150
1400
Specific Heat Capacity, J/kg-K 400
480
Thermal Conductivity, W/m-K 43
27
Thermal Expansion, µm/m-K 15
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.5
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 6.6
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 37
7.0
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 4.3
1.9
Embodied Energy, MJ/kg 63
27
Embodied Water, L/kg 290
97

Common Calculations

Stiffness to Weight: Axial, points 8.2
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 10 to 18
17
Strength to Weight: Bending, points 12 to 17
17
Thermal Diffusivity, mm2/s 12
7.2
Thermal Shock Resistance, points 12 to 20
17

Alloy Composition

Carbon (C), % 0
0 to 0.040
Chromium (Cr), % 0
10.5 to 12.5
Copper (Cu), % 73.5 to 80.5
0
Iron (Fe), % 0.5 to 1.0
84.2 to 88.9
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0 to 1.0
0 to 1.0
Nickel (Ni), % 19 to 23
0.6 to 1.1
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 1.0
0
Residuals, % 0 to 0.5
0