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C72500 Copper-nickel vs. S40975 Stainless Steel

C72500 copper-nickel belongs to the copper alloys classification, while S40975 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 C72500 copper-nickel and the bottom bar is S40975 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Poisson's Ratio 0.34
0.28
Rockwell B Hardness 75 to 100
81
Shear Modulus, GPa 45
75
Tensile Strength: Ultimate (UTS), MPa 420 to 780
460

Thermal Properties

Latent Heat of Fusion, J/g 210
270
Maximum Temperature: Mechanical, °C 210
710
Melting Completion (Liquidus), °C 1130
1450
Melting Onset (Solidus), °C 1060
1400
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 54
26
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 11
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 35
6.5
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 3.6
2.0
Embodied Energy, MJ/kg 55
28
Embodied Water, L/kg 320
95

Common Calculations

Stiffness to Weight: Axial, points 7.6
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 13 to 24
17
Strength to Weight: Bending, points 14 to 21
17
Thermal Diffusivity, mm2/s 16
7.0
Thermal Shock Resistance, points 14 to 27
17

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
10.5 to 11.7
Copper (Cu), % 85.2 to 89.7
0
Iron (Fe), % 0 to 0.6
84.4 to 89
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.2
0 to 1.0
Nickel (Ni), % 8.5 to 10.5
0.5 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 0.030
Tin (Sn), % 1.8 to 2.8
0
Titanium (Ti), % 0
0 to 0.75
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0 to 0.2
0