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C72500 Copper-nickel vs. S21603 Stainless Steel

C72500 copper-nickel belongs to the copper alloys classification, while S21603 stainless steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is C72500 copper-nickel and the bottom bar is S21603 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Poisson's Ratio 0.34
0.28
Rockwell B Hardness 75 to 100
88
Shear Modulus, GPa 45
79
Tensile Strength: Ultimate (UTS), MPa 420 to 780
690

Thermal Properties

Latent Heat of Fusion, J/g 210
290
Maximum Temperature: Mechanical, °C 210
990
Melting Completion (Liquidus), °C 1130
1420
Melting Onset (Solidus), °C 1060
1380
Specific Heat Capacity, J/kg-K 390
480
Thermal Expansion, µm/m-K 17
17

Otherwise Unclassified Properties

Base Metal Price, % relative 35
17
Density, g/cm3 8.9
7.7
Embodied Carbon, kg CO2/kg material 3.6
3.6
Embodied Energy, MJ/kg 55
50
Embodied Water, L/kg 320
160

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
25
Strength to Weight: Bending, points 14 to 21
22
Thermal Shock Resistance, points 14 to 27
15

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
17.5 to 22
Copper (Cu), % 85.2 to 89.7
0
Iron (Fe), % 0 to 0.6
57.6 to 67.8
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.2
7.5 to 9.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 8.5 to 10.5
5.0 to 7.0
Nitrogen (N), % 0
0.25 to 0.5
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 0.75
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