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C70700 Copper-nickel vs. S21603 Stainless Steel

C70700 copper-nickel belongs to the copper alloys classification, while S21603 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 S21603 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 73
200
Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 39
45
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 46
79
Shear Strength, MPa 220
490
Tensile Strength: Ultimate (UTS), MPa 320
690
Tensile Strength: Yield (Proof), MPa 110
390

Thermal Properties

Latent Heat of Fusion, J/g 220
290
Maximum Temperature: Mechanical, °C 220
990
Melting Completion (Liquidus), °C 1120
1420
Melting Onset (Solidus), °C 1060
1380
Specific Heat Capacity, J/kg-K 390
480
Thermal Expansion, µm/m-K 16
17

Otherwise Unclassified Properties

Base Metal Price, % relative 34
17
Density, g/cm3 8.9
7.7
Embodied Carbon, kg CO2/kg material 3.4
3.6
Embodied Energy, MJ/kg 52
50
Embodied Water, L/kg 300
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
270
Resilience: Unit (Modulus of Resilience), kJ/m3 51
380
Stiffness to Weight: Axial, points 7.6
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 10
25
Strength to Weight: Bending, points 12
22
Thermal Shock Resistance, points 12
15

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
17.5 to 22
Copper (Cu), % 88.5 to 90.5
0
Iron (Fe), % 0 to 0.050
57.6 to 67.8
Manganese (Mn), % 0 to 0.5
7.5 to 9.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 9.5 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
Residuals, % 0 to 0.5
0