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C70700 Copper-nickel vs. S31727 Stainless Steel

C70700 copper-nickel belongs to the copper alloys classification, while S31727 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is C70700 copper-nickel and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 73
190
Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 39
40
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 46
78
Shear Strength, MPa 220
430
Tensile Strength: Ultimate (UTS), MPa 320
630
Tensile Strength: Yield (Proof), MPa 110
270

Thermal Properties

Latent Heat of Fusion, J/g 220
290
Maximum Temperature: Mechanical, °C 220
1010
Melting Completion (Liquidus), °C 1120
1440
Melting Onset (Solidus), °C 1060
1390
Specific Heat Capacity, J/kg-K 390
470
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 34
24
Density, g/cm3 8.9
8.0
Embodied Carbon, kg CO2/kg material 3.4
4.7
Embodied Energy, MJ/kg 52
64
Embodied Water, L/kg 300
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
200
Resilience: Unit (Modulus of Resilience), kJ/m3 51
190
Stiffness to Weight: Axial, points 7.6
14
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 10
22
Strength to Weight: Bending, points 12
20
Thermal Shock Resistance, points 12
14

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
17.5 to 19
Copper (Cu), % 88.5 to 90.5
2.8 to 4.0
Iron (Fe), % 0 to 0.050
53.7 to 61.3
Manganese (Mn), % 0 to 0.5
0 to 1.0
Molybdenum (Mo), % 0
3.8 to 4.5
Nickel (Ni), % 9.5 to 10.5
14.5 to 16.5
Nitrogen (N), % 0
0.15 to 0.21
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Residuals, % 0 to 0.5
0