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S32050 Stainless Steel vs. C71580 Copper-nickel

S32050 stainless steel belongs to the iron alloys classification, while C71580 copper-nickel belongs to the copper alloys. They have a modest 22% 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 (3, in this case) are not shown.

For each property being compared, the top bar is S32050 stainless steel and the bottom bar is C71580 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
75
Elastic (Young's, Tensile) Modulus, GPa 210
140
Elongation at Break, % 46
40
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 81
51
Shear Strength, MPa 540
230
Tensile Strength: Ultimate (UTS), MPa 770
330
Tensile Strength: Yield (Proof), MPa 370
110

Thermal Properties

Latent Heat of Fusion, J/g 310
230
Maximum Temperature: Mechanical, °C 1100
260
Melting Completion (Liquidus), °C 1460
1180
Melting Onset (Solidus), °C 1410
1120
Specific Heat Capacity, J/kg-K 470
400
Thermal Conductivity, W/m-K 12
39
Thermal Expansion, µm/m-K 16
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
4.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
4.7

Otherwise Unclassified Properties

Base Metal Price, % relative 31
41
Density, g/cm3 8.0
8.9
Embodied Carbon, kg CO2/kg material 6.0
5.1
Embodied Energy, MJ/kg 81
74
Embodied Water, L/kg 210
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
100
Resilience: Unit (Modulus of Resilience), kJ/m3 330
47
Stiffness to Weight: Axial, points 14
8.5
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 27
10
Strength to Weight: Bending, points 23
12
Thermal Diffusivity, mm2/s 3.3
11
Thermal Shock Resistance, points 17
11

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.070
Chromium (Cr), % 22 to 24
0
Copper (Cu), % 0 to 0.4
65.5 to 71
Iron (Fe), % 43.1 to 51.8
0 to 0.5
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 1.5
0 to 0.3
Molybdenum (Mo), % 6.0 to 6.6
0
Nickel (Ni), % 20 to 23
29 to 33
Nitrogen (N), % 0.21 to 0.32
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.020
0
Zinc (Zn), % 0
0 to 0.050
Residuals, % 0
0 to 0.5