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C72150 Copper-nickel vs. S35140 Stainless Steel

C72150 copper-nickel belongs to the copper alloys classification, while S35140 stainless steel belongs to the iron alloys. They have a modest 26% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is C72150 copper-nickel and the bottom bar is S35140 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 99
210
Elastic (Young's, Tensile) Modulus, GPa 150
200
Elongation at Break, % 29
34
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 55
78
Shear Strength, MPa 320
460
Tensile Strength: Ultimate (UTS), MPa 490
690
Tensile Strength: Yield (Proof), MPa 210
310

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 600
1100
Melting Completion (Liquidus), °C 1210
1420
Melting Onset (Solidus), °C 1250
1370
Specific Heat Capacity, J/kg-K 410
470
Thermal Conductivity, W/m-K 22
14
Thermal Expansion, µm/m-K 14
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.5
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.6
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 45
31
Density, g/cm3 8.9
8.0
Embodied Carbon, kg CO2/kg material 6.1
5.5
Embodied Energy, MJ/kg 88
78
Embodied Water, L/kg 270
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
190
Resilience: Unit (Modulus of Resilience), kJ/m3 150
250
Stiffness to Weight: Axial, points 9.1
14
Stiffness to Weight: Bending, points 20
24
Strength to Weight: Axial, points 15
24
Strength to Weight: Bending, points 15
22
Thermal Diffusivity, mm2/s 6.0
3.7
Thermal Shock Resistance, points 18
16

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.1
Chromium (Cr), % 0
20 to 22
Copper (Cu), % 52.5 to 57
0
Iron (Fe), % 0 to 0.1
44.1 to 52.7
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.050
1.0 to 3.0
Molybdenum (Mo), % 0
1.0 to 2.0
Nickel (Ni), % 43 to 46
25 to 27
Niobium (Nb), % 0
0.25 to 0.75
Nitrogen (N), % 0
0.080 to 0.2
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.5
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.5
0