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S21900 Stainless Steel vs. N06025 Nickel

S21900 stainless steel belongs to the iron alloys classification, while N06025 nickel belongs to the nickel alloys. They have a modest 37% 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 S21900 stainless steel and the bottom bar is N06025 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 50
32
Fatigue Strength, MPa 380
220
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
76
Shear Strength, MPa 510
500
Tensile Strength: Ultimate (UTS), MPa 710
760
Tensile Strength: Yield (Proof), MPa 390
310

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Maximum Temperature: Mechanical, °C 980
1000
Melting Completion (Liquidus), °C 1400
1350
Melting Onset (Solidus), °C 1350
1300
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 14
11
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 15
50
Density, g/cm3 7.7
8.2
Embodied Carbon, kg CO2/kg material 3.0
8.4
Embodied Energy, MJ/kg 43
120
Embodied Water, L/kg 160
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 300
190
Resilience: Unit (Modulus of Resilience), kJ/m3 380
240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26
26
Strength to Weight: Bending, points 23
22
Thermal Diffusivity, mm2/s 3.8
2.9
Thermal Shock Resistance, points 15
21

Alloy Composition

Aluminum (Al), % 0
1.8 to 2.4
Carbon (C), % 0 to 0.080
0.15 to 0.25
Chromium (Cr), % 19 to 21.5
24 to 26
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 59.4 to 67.4
8.0 to 11
Manganese (Mn), % 8.0 to 10
0 to 0.15
Nickel (Ni), % 5.5 to 7.5
59.2 to 65.9
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0.1 to 0.2
Yttrium (Y), % 0
0.050 to 0.12
Zinc (Zn), % 0
0.010 to 0.1