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S31254 Stainless Steel vs. C72500 Copper-nickel

S31254 stainless steel belongs to the iron alloys classification, while C72500 copper-nickel belongs to the copper alloys. There are 25 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 S31254 stainless steel and the bottom bar is C72500 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Poisson's Ratio 0.28
0.34
Rockwell B Hardness 84
75 to 100
Shear Modulus, GPa 80
45
Tensile Strength: Ultimate (UTS), MPa 720
420 to 780

Thermal Properties

Latent Heat of Fusion, J/g 300
210
Maximum Temperature: Mechanical, °C 1090
210
Melting Completion (Liquidus), °C 1460
1130
Melting Onset (Solidus), °C 1420
1060
Specific Heat Capacity, J/kg-K 460
390
Thermal Conductivity, W/m-K 14
54
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
11
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
11

Otherwise Unclassified Properties

Base Metal Price, % relative 28
35
Density, g/cm3 8.0
8.9
Embodied Carbon, kg CO2/kg material 5.5
3.6
Embodied Energy, MJ/kg 74
55
Embodied Water, L/kg 190
320

Common Calculations

Stiffness to Weight: Axial, points 14
7.6
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 25
13 to 24
Strength to Weight: Bending, points 22
14 to 21
Thermal Diffusivity, mm2/s 3.8
16
Thermal Shock Resistance, points 15
14 to 27

Alloy Composition

Carbon (C), % 0 to 0.020
0
Chromium (Cr), % 19.5 to 20.5
0
Copper (Cu), % 0.5 to 1.0
85.2 to 89.7
Iron (Fe), % 51.4 to 56.3
0 to 0.6
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 1.0
0 to 0.2
Molybdenum (Mo), % 6.0 to 6.5
0
Nickel (Ni), % 17.5 to 18.5
8.5 to 10.5
Nitrogen (N), % 0.18 to 0.22
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.8
0
Sulfur (S), % 0 to 0.010
0
Tin (Sn), % 0
1.8 to 2.8
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.2