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S21904 Stainless Steel vs. N08221 Nickel

S21904 stainless steel belongs to the iron alloys classification, while N08221 nickel belongs to the nickel alloys. They have 55% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S21904 stainless steel and the bottom bar is N08221 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17 to 51
34
Fatigue Strength, MPa 380 to 550
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
79
Shear Strength, MPa 510 to 620
410
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
610
Tensile Strength: Yield (Proof), MPa 390 to 910
270

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Mechanical, °C 980
980
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1350
1390
Specific Heat Capacity, J/kg-K 480
460
Thermal Expansion, µm/m-K 17
13

Otherwise Unclassified Properties

Base Metal Price, % relative 15
44
Density, g/cm3 7.7
8.3
Embodied Carbon, kg CO2/kg material 3.0
7.9
Embodied Energy, MJ/kg 43
110
Embodied Water, L/kg 160
240

Common Calculations

PREN (Pitting Resistance) 25
40
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
170
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25 to 36
21
Strength to Weight: Bending, points 23 to 29
19
Thermal Shock Resistance, points 15 to 21
16

Alloy Composition

Aluminum (Al), % 0
0 to 0.2
Carbon (C), % 0 to 0.040
0 to 0.025
Chromium (Cr), % 19 to 21.5
20 to 22
Copper (Cu), % 0
1.5 to 3.0
Iron (Fe), % 59.5 to 67.4
22 to 33.9
Manganese (Mn), % 8.0 to 10
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 6.5
Nickel (Ni), % 5.5 to 7.5
39 to 46
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0 to 0.050
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0.6 to 1.0