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C72700 Copper-nickel vs. S44635 Stainless Steel

C72700 copper-nickel belongs to the copper alloys classification, while S44635 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is C72700 copper-nickel and the bottom bar is S44635 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
210
Elongation at Break, % 4.0 to 36
23
Poisson's Ratio 0.34
0.27
Shear Modulus, GPa 44
81
Shear Strength, MPa 310 to 620
450
Tensile Strength: Ultimate (UTS), MPa 460 to 1070
710
Tensile Strength: Yield (Proof), MPa 580 to 1060
580

Thermal Properties

Latent Heat of Fusion, J/g 210
300
Maximum Temperature: Mechanical, °C 200
1100
Melting Completion (Liquidus), °C 1100
1460
Melting Onset (Solidus), °C 930
1420
Specific Heat Capacity, J/kg-K 380
470
Thermal Conductivity, W/m-K 54
16
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 11
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 36
22
Density, g/cm3 8.8
7.8
Embodied Carbon, kg CO2/kg material 4.0
4.4
Embodied Energy, MJ/kg 62
62
Embodied Water, L/kg 350
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 380
150
Resilience: Unit (Modulus of Resilience), kJ/m3 1420 to 4770
810
Stiffness to Weight: Axial, points 7.4
15
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 14 to 34
25
Strength to Weight: Bending, points 15 to 26
23
Thermal Diffusivity, mm2/s 16
4.4
Thermal Shock Resistance, points 16 to 38
23

Alloy Composition

Carbon (C), % 0
0 to 0.025
Chromium (Cr), % 0
24.5 to 26
Copper (Cu), % 82.1 to 86
0
Iron (Fe), % 0 to 0.5
61.5 to 68.5
Lead (Pb), % 0 to 0.020
0
Magnesium (Mg), % 0 to 0.15
0
Manganese (Mn), % 0.050 to 0.3
0 to 1.0
Molybdenum (Mo), % 0
3.5 to 4.5
Nickel (Ni), % 8.5 to 9.5
3.5 to 4.5
Niobium (Nb), % 0 to 0.1
0.2 to 0.8
Nitrogen (N), % 0
0 to 0.035
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 5.5 to 6.5
0
Titanium (Ti), % 0
0.2 to 0.8
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0 to 0.3
0