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C71500 Copper-nickel vs. N08904 Stainless Steel

C71500 copper-nickel belongs to the copper alloys classification, while N08904 stainless steel belongs to the iron alloys. They have a modest 28% of their average alloy composition in common, which, by itself, doesn't mean much. 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 C71500 copper-nickel and the bottom bar is N08904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
200
Poisson's Ratio 0.33
0.28
Rockwell B Hardness 40 to 89
77
Shear Modulus, GPa 52
79
Tensile Strength: Ultimate (UTS), MPa 380 to 620
540

Thermal Properties

Latent Heat of Fusion, J/g 230
300
Maximum Temperature: Mechanical, °C 260
1100
Melting Completion (Liquidus), °C 1240
1440
Melting Onset (Solidus), °C 1170
1390
Specific Heat Capacity, J/kg-K 400
470
Thermal Conductivity, W/m-K 28
12
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.6
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 4.7
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 41
32
Density, g/cm3 8.9
8.1
Embodied Carbon, kg CO2/kg material 5.1
5.8
Embodied Energy, MJ/kg 74
79
Embodied Water, L/kg 280
200

Common Calculations

Stiffness to Weight: Axial, points 8.6
14
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 12 to 19
19
Strength to Weight: Bending, points 13 to 18
18
Thermal Diffusivity, mm2/s 7.7
3.1
Thermal Shock Resistance, points 12 to 20
12

Alloy Composition

Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0
19 to 23
Copper (Cu), % 63.5 to 70.6
1.0 to 2.0
Iron (Fe), % 0.4 to 1.0
38.8 to 53
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
4.0 to 5.0
Nickel (Ni), % 29 to 33
23 to 28
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 0.035
Zinc (Zn), % 0 to 1.0
0
Residuals, % 0 to 0.5
0