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C72800 Copper-nickel vs. S31730 Stainless Steel

C72800 copper-nickel belongs to the copper alloys classification, while S31730 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 C72800 copper-nickel and the bottom bar is S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 3.9 to 23
40
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 44
77
Shear Strength, MPa 330 to 740
370
Tensile Strength: Ultimate (UTS), MPa 520 to 1270
540
Tensile Strength: Yield (Proof), MPa 250 to 1210
200

Thermal Properties

Latent Heat of Fusion, J/g 210
290
Maximum Temperature: Mechanical, °C 200
990
Melting Completion (Liquidus), °C 1080
1430
Melting Onset (Solidus), °C 920
1390
Specific Heat Capacity, J/kg-K 380
470
Thermal Expansion, µm/m-K 17
16

Otherwise Unclassified Properties

Base Metal Price, % relative 38
24
Density, g/cm3 8.8
8.0
Embodied Carbon, kg CO2/kg material 4.4
4.6
Embodied Energy, MJ/kg 68
63
Embodied Water, L/kg 360
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 99
170
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 5650
99
Stiffness to Weight: Axial, points 7.4
14
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 17 to 40
19
Strength to Weight: Bending, points 16 to 30
18
Thermal Shock Resistance, points 19 to 45
12

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
17 to 19
Copper (Cu), % 78.3 to 82.8
4.0 to 5.0
Iron (Fe), % 0 to 0.5
52.4 to 61
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
3.0 to 4.0
Nickel (Ni), % 9.5 to 10.5
15 to 16.5
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0
0 to 0.045
Phosphorus (P), % 0 to 0.0050
0 to 0.040
Silicon (Si), % 0 to 0.050
0 to 1.0
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