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S31727 Stainless Steel vs. C71580 Copper-nickel

S31727 stainless steel belongs to the iron alloys classification, while C71580 copper-nickel belongs to the copper 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 S31727 stainless steel and the bottom bar is C71580 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
75
Elastic (Young's, Tensile) Modulus, GPa 200
140
Elongation at Break, % 40
40
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
51
Shear Strength, MPa 430
230
Tensile Strength: Ultimate (UTS), MPa 630
330
Tensile Strength: Yield (Proof), MPa 270
110

Thermal Properties

Latent Heat of Fusion, J/g 290
230
Maximum Temperature: Mechanical, °C 1010
260
Melting Completion (Liquidus), °C 1440
1180
Melting Onset (Solidus), °C 1390
1120
Specific Heat Capacity, J/kg-K 470
400
Thermal Expansion, µm/m-K 16
15

Otherwise Unclassified Properties

Base Metal Price, % relative 24
41
Density, g/cm3 8.0
8.9
Embodied Carbon, kg CO2/kg material 4.7
5.1
Embodied Energy, MJ/kg 64
74
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
47
Stiffness to Weight: Axial, points 14
8.5
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 22
10
Strength to Weight: Bending, points 20
12
Thermal Shock Resistance, points 14
11

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.070
Chromium (Cr), % 17.5 to 19
0
Copper (Cu), % 2.8 to 4.0
65.5 to 71
Iron (Fe), % 53.7 to 61.3
0 to 0.5
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 1.0
0 to 0.3
Molybdenum (Mo), % 3.8 to 4.5
0
Nickel (Ni), % 14.5 to 16.5
29 to 33
Nitrogen (N), % 0.15 to 0.21
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 0.050
Residuals, % 0
0 to 0.5