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C72500 Copper-nickel vs. S32906 Stainless Steel

C72500 copper-nickel belongs to the copper alloys classification, while S32906 stainless steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is C72500 copper-nickel and the bottom bar is S32906 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
210
Poisson's Ratio 0.34
0.27
Shear Modulus, GPa 45
81
Tensile Strength: Ultimate (UTS), MPa 420 to 780
850

Thermal Properties

Latent Heat of Fusion, J/g 210
300
Maximum Temperature: Mechanical, °C 210
1100
Melting Completion (Liquidus), °C 1130
1430
Melting Onset (Solidus), °C 1060
1380
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 54
13
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 11
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 35
20
Density, g/cm3 8.9
7.7
Embodied Carbon, kg CO2/kg material 3.6
3.7
Embodied Energy, MJ/kg 55
52
Embodied Water, L/kg 320
190

Common Calculations

Stiffness to Weight: Axial, points 7.6
15
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 13 to 24
30
Strength to Weight: Bending, points 14 to 21
26
Thermal Diffusivity, mm2/s 16
3.6
Thermal Shock Resistance, points 14 to 27
23

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
28 to 30
Copper (Cu), % 85.2 to 89.7
0 to 0.8
Iron (Fe), % 0 to 0.6
56.6 to 63.6
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.2
0.8 to 1.5
Molybdenum (Mo), % 0
1.5 to 2.6
Nickel (Ni), % 8.5 to 10.5
5.8 to 7.5
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 1.8 to 2.8
0
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0 to 0.2
0