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S21904 Stainless Steel vs. N10276 Nickel

S21904 stainless steel belongs to the iron alloys classification, while N10276 nickel belongs to the nickel alloys. They have a modest 28% 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 (3, in this case) are not shown.

For each property being compared, the top bar is S21904 stainless steel and the bottom bar is N10276 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 17 to 51
47
Fatigue Strength, MPa 380 to 550
280
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
84
Shear Strength, MPa 510 to 620
550
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
780
Tensile Strength: Yield (Proof), MPa 390 to 910
320

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Maximum Temperature: Mechanical, °C 980
960
Melting Completion (Liquidus), °C 1400
1370
Melting Onset (Solidus), °C 1350
1320
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 14
9.1
Thermal Expansion, µm/m-K 17
11

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 15
70
Density, g/cm3 7.7
9.1
Embodied Carbon, kg CO2/kg material 3.0
13
Embodied Energy, MJ/kg 43
170
Embodied Water, L/kg 160
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
300
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
230
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 25 to 36
24
Strength to Weight: Bending, points 23 to 29
21
Thermal Diffusivity, mm2/s 3.8
2.4
Thermal Shock Resistance, points 15 to 21
23

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.010
Chromium (Cr), % 19 to 21.5
14.5 to 16.5
Cobalt (Co), % 0
0 to 2.5
Iron (Fe), % 59.5 to 67.4
4.0 to 7.0
Manganese (Mn), % 8.0 to 10
0 to 0.010
Molybdenum (Mo), % 0
15 to 17
Nickel (Ni), % 5.5 to 7.5
51 to 63.5
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 0.080
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
3.0 to 4.5
Vanadium (V), % 0
0 to 0.35