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C71000 Copper-nickel vs. N08801 Stainless Steel

C71000 copper-nickel belongs to the copper alloys classification, while N08801 stainless steel belongs to the iron alloys. They have a modest 23% of their average alloy composition in common, which, by itself, doesn't mean much. There are 24 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 N08801 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 130
200
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 49
77
Tensile Strength: Ultimate (UTS), MPa 320 to 560
860

Thermal Properties

Latent Heat of Fusion, J/g 230
300
Maximum Temperature: Mechanical, °C 240
1090
Melting Completion (Liquidus), °C 1200
1390
Melting Onset (Solidus), °C 1150
1360
Specific Heat Capacity, J/kg-K 400
480
Thermal Conductivity, W/m-K 43
12
Thermal Expansion, µm/m-K 15
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.5
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 6.6
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 37
30
Density, g/cm3 8.9
8.0
Embodied Carbon, kg CO2/kg material 4.3
5.5
Embodied Energy, MJ/kg 63
79
Embodied Water, L/kg 290
200

Common Calculations

Stiffness to Weight: Axial, points 8.2
14
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 10 to 18
30
Strength to Weight: Bending, points 12 to 17
25
Thermal Diffusivity, mm2/s 12
3.3
Thermal Shock Resistance, points 12 to 20
20

Alloy Composition

Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
19 to 22
Copper (Cu), % 73.5 to 80.5
0 to 0.5
Iron (Fe), % 0.5 to 1.0
39.5 to 50.3
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0 to 1.0
0 to 1.5
Nickel (Ni), % 19 to 23
30 to 34
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
0.75 to 1.5
Zinc (Zn), % 0 to 1.0
0
Residuals, % 0 to 0.5
0