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C72800 Copper-nickel vs. S31727 Stainless Steel

C72800 copper-nickel belongs to the copper alloys classification, while S31727 stainless steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is C72800 copper-nickel and the bottom bar is S31727 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
78
Shear Strength, MPa 330 to 740
430
Tensile Strength: Ultimate (UTS), MPa 520 to 1270
630
Tensile Strength: Yield (Proof), MPa 250 to 1210
270

Thermal Properties

Latent Heat of Fusion, J/g 210
290
Maximum Temperature: Mechanical, °C 200
1010
Melting Completion (Liquidus), °C 1080
1440
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
4.7
Embodied Energy, MJ/kg 68
64
Embodied Water, L/kg 360
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 99
200
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 5650
190
Stiffness to Weight: Axial, points 7.4
14
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 17 to 40
22
Strength to Weight: Bending, points 16 to 30
20
Thermal Shock Resistance, points 19 to 45
14

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
17.5 to 19
Copper (Cu), % 78.3 to 82.8
2.8 to 4.0
Iron (Fe), % 0 to 0.5
53.7 to 61.3
Lead (Pb), % 0 to 0.0050
0
Magnesium (Mg), % 0.0050 to 0.15
0
Manganese (Mn), % 0.050 to 0.3
0 to 1.0
Molybdenum (Mo), % 0
3.8 to 4.5
Nickel (Ni), % 9.5 to 10.5
14.5 to 16.5
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0
0.15 to 0.21
Phosphorus (P), % 0 to 0.0050
0 to 0.030
Silicon (Si), % 0 to 0.050
0 to 1.0
Sulfur (S), % 0 to 0.0025
0 to 0.030
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