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S31727 Stainless Steel vs. C96400 Copper-nickel

S31727 stainless steel belongs to the iron alloys classification, while C96400 copper-nickel belongs to the copper alloys. They have a modest 21% of their average alloy composition in common, which, by itself, doesn't mean much. There are 24 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is S31727 stainless steel and the bottom bar is C96400 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
140
Elongation at Break, % 40
25
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
51
Tensile Strength: Ultimate (UTS), MPa 630
490
Tensile Strength: Yield (Proof), MPa 270
260

Thermal Properties

Latent Heat of Fusion, J/g 290
240
Maximum Temperature: Mechanical, °C 1010
260
Melting Completion (Liquidus), °C 1440
1240
Melting Onset (Solidus), °C 1390
1170
Specific Heat Capacity, J/kg-K 470
400
Thermal Expansion, µm/m-K 16
15

Otherwise Unclassified Properties

Base Metal Price, % relative 24
45
Density, g/cm3 8.0
8.9
Embodied Carbon, kg CO2/kg material 4.7
5.9
Embodied Energy, MJ/kg 64
87
Embodied Water, L/kg 180
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
100
Resilience: Unit (Modulus of Resilience), kJ/m3 190
250
Stiffness to Weight: Axial, points 14
8.6
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 22
15
Strength to Weight: Bending, points 20
16
Thermal Shock Resistance, points 14
17

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.15
Chromium (Cr), % 17.5 to 19
0
Copper (Cu), % 2.8 to 4.0
62.3 to 71.3
Iron (Fe), % 53.7 to 61.3
0.25 to 1.5
Lead (Pb), % 0
0 to 0.010
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 3.8 to 4.5
0
Nickel (Ni), % 14.5 to 16.5
28 to 32
Niobium (Nb), % 0
0.5 to 1.5
Nitrogen (N), % 0.15 to 0.21
0
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.020
Residuals, % 0
0 to 0.5