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S21640 Stainless Steel vs. N07776 Nickel

S21640 stainless steel belongs to the iron alloys classification, while N07776 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 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is S21640 stainless steel and the bottom bar is N07776 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 46
39
Fatigue Strength, MPa 320
220
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 78
79
Shear Strength, MPa 520
470
Tensile Strength: Ultimate (UTS), MPa 740
700
Tensile Strength: Yield (Proof), MPa 350
270

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Maximum Temperature: Mechanical, °C 940
970
Melting Completion (Liquidus), °C 1430
1550
Melting Onset (Solidus), °C 1380
1500
Specific Heat Capacity, J/kg-K 480
430
Thermal Expansion, µm/m-K 17
12

Otherwise Unclassified Properties

Base Metal Price, % relative 17
85
Density, g/cm3 7.7
8.6
Embodied Carbon, kg CO2/kg material 3.6
15
Embodied Energy, MJ/kg 51
210
Embodied Water, L/kg 150
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 280
220
Resilience: Unit (Modulus of Resilience), kJ/m3 300
180
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 27
22
Strength to Weight: Bending, points 23
20
Thermal Shock Resistance, points 16
20

Alloy Composition

Aluminum (Al), % 0
0 to 2.0
Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 17.5 to 19.5
12 to 22
Iron (Fe), % 63 to 74.3
0 to 24.5
Manganese (Mn), % 3.5 to 6.5
0 to 1.0
Molybdenum (Mo), % 0.5 to 2.0
9.0 to 15
Nickel (Ni), % 4.0 to 6.5
50 to 60
Niobium (Nb), % 0.1 to 1.0
4.0 to 6.0
Nitrogen (N), % 0.080 to 0.3
0
Phosphorus (P), % 0 to 0.060
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0 to 1.0
Tungsten (W), % 0
0.5 to 2.5