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N07750 Nickel vs. S21640 Stainless Steel

N07750 nickel belongs to the nickel alloys classification, while S21640 stainless steel belongs to the iron alloys. They have a modest 29% 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 N07750 nickel and the bottom bar is S21640 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 25
46
Fatigue Strength, MPa 520
320
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Shear Strength, MPa 770
520
Tensile Strength: Ultimate (UTS), MPa 1200
740
Tensile Strength: Yield (Proof), MPa 820
350

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Maximum Temperature: Mechanical, °C 960
940
Melting Completion (Liquidus), °C 1430
1430
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 1.5
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 60
17
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 10
3.6
Embodied Energy, MJ/kg 150
51
Embodied Water, L/kg 260
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
280
Resilience: Unit (Modulus of Resilience), kJ/m3 1770
300
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 40
27
Strength to Weight: Bending, points 30
23
Thermal Diffusivity, mm2/s 3.3
4.0
Thermal Shock Resistance, points 36
16

Alloy Composition

Aluminum (Al), % 0.4 to 1.0
0
Carbon (C), % 0 to 0.080
0 to 0.080
Chromium (Cr), % 14 to 17
17.5 to 19.5
Cobalt (Co), % 0 to 1.0
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 5.0 to 9.0
63 to 74.3
Manganese (Mn), % 0 to 1.0
3.5 to 6.5
Molybdenum (Mo), % 0
0.5 to 2.0
Nickel (Ni), % 70 to 77.7
4.0 to 6.5
Niobium (Nb), % 0.7 to 1.2
0.1 to 1.0
Nitrogen (N), % 0
0.080 to 0.3
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 2.3 to 2.8
0