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S21900 Stainless Steel vs. N10665 Nickel

S21900 stainless steel belongs to the iron alloys classification, while N10665 nickel belongs to the nickel alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is S21900 stainless steel and the bottom bar is N10665 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 50
45
Fatigue Strength, MPa 380
340
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 78
84
Shear Strength, MPa 510
600
Tensile Strength: Ultimate (UTS), MPa 710
860
Tensile Strength: Yield (Proof), MPa 390
400

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Mechanical, °C 980
900
Melting Completion (Liquidus), °C 1400
1620
Melting Onset (Solidus), °C 1350
1570
Specific Heat Capacity, J/kg-K 480
390
Thermal Conductivity, W/m-K 14
11
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
1.2

Otherwise Unclassified Properties

Base Metal Price, % relative 15
75
Density, g/cm3 7.7
9.3
Embodied Carbon, kg CO2/kg material 3.0
15
Embodied Energy, MJ/kg 43
200
Embodied Water, L/kg 160
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 300
320
Resilience: Unit (Modulus of Resilience), kJ/m3 380
360
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 26
26
Strength to Weight: Bending, points 23
22
Thermal Diffusivity, mm2/s 3.8
3.1
Thermal Shock Resistance, points 15
27

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.020
Chromium (Cr), % 19 to 21.5
0 to 1.0
Cobalt (Co), % 0
0 to 1.0
Iron (Fe), % 59.4 to 67.4
0 to 2.0
Manganese (Mn), % 8.0 to 10
0 to 1.0
Molybdenum (Mo), % 0
26 to 30
Nickel (Ni), % 5.5 to 7.5
64.8 to 74
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.1
Sulfur (S), % 0 to 0.030
0 to 0.030