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C72800 Copper-nickel vs. S32950 Stainless Steel

C72800 copper-nickel belongs to the copper alloys classification, while S32950 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is C72800 copper-nickel and the bottom bar is S32950 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 3.9 to 23
17
Poisson's Ratio 0.34
0.27
Rockwell C Hardness 21 to 40
28
Shear Modulus, GPa 44
80
Shear Strength, MPa 330 to 740
480
Tensile Strength: Ultimate (UTS), MPa 520 to 1270
780
Tensile Strength: Yield (Proof), MPa 250 to 1210
550

Thermal Properties

Latent Heat of Fusion, J/g 210
300
Maximum Temperature: Mechanical, °C 200
1100
Melting Completion (Liquidus), °C 1080
1430
Melting Onset (Solidus), °C 920
1390
Specific Heat Capacity, J/kg-K 380
480
Thermal Conductivity, W/m-K 55
16
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 11
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 38
17
Density, g/cm3 8.8
7.7
Embodied Carbon, kg CO2/kg material 4.4
3.4
Embodied Energy, MJ/kg 68
47
Embodied Water, L/kg 360
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 99
120
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 5650
730
Stiffness to Weight: Axial, points 7.4
15
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 17 to 40
28
Strength to Weight: Bending, points 16 to 30
24
Thermal Diffusivity, mm2/s 17
4.3
Thermal Shock Resistance, points 19 to 45
21

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Antimony (Sb), % 0 to 0.020
0
Bismuth (Bi), % 0 to 0.0010
0
Boron (B), % 0 to 0.0010
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
26 to 29
Copper (Cu), % 78.3 to 82.8
0
Iron (Fe), % 0 to 0.5
60.3 to 69.4
Lead (Pb), % 0 to 0.0050
0
Magnesium (Mg), % 0.0050 to 0.15
0
Manganese (Mn), % 0.050 to 0.3
0 to 2.0
Molybdenum (Mo), % 0
1.0 to 2.5
Nickel (Ni), % 9.5 to 10.5
3.5 to 5.2
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0
0.15 to 0.35
Phosphorus (P), % 0 to 0.0050
0 to 0.035
Silicon (Si), % 0 to 0.050
0 to 0.6
Sulfur (S), % 0 to 0.0025
0 to 0.010
Tin (Sn), % 7.5 to 8.5
0
Titanium (Ti), % 0 to 0.010
0
Zinc (Zn), % 0 to 1.0
0
Residuals, % 0 to 0.3
0