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N07750 Nickel vs. S21800 Stainless Steel

N07750 nickel belongs to the nickel alloys classification, while S21800 stainless steel belongs to the iron alloys. They have a modest 32% 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 (10, in this case) are not shown.

For each property being compared, the top bar is N07750 nickel and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 25
40
Fatigue Strength, MPa 520
330
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Shear Strength, MPa 770
510
Tensile Strength: Ultimate (UTS), MPa 1200
740
Tensile Strength: Yield (Proof), MPa 820
390

Thermal Properties

Latent Heat of Fusion, J/g 310
340
Maximum Temperature: Mechanical, °C 960
900
Melting Completion (Liquidus), °C 1430
1360
Melting Onset (Solidus), °C 1400
1310
Specific Heat Capacity, J/kg-K 460
500
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 60
15
Density, g/cm3 8.4
7.5
Embodied Carbon, kg CO2/kg material 10
3.1
Embodied Energy, MJ/kg 150
45
Embodied Water, L/kg 260
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
250
Resilience: Unit (Modulus of Resilience), kJ/m3 1770
390
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
26
Strength to Weight: Axial, points 40
27
Strength to Weight: Bending, points 30
24
Thermal Shock Resistance, points 36
17

Alloy Composition

Aluminum (Al), % 0.4 to 1.0
0
Carbon (C), % 0 to 0.080
0 to 0.1
Chromium (Cr), % 14 to 17
16 to 18
Cobalt (Co), % 0 to 1.0
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 5.0 to 9.0
59.1 to 65.4
Manganese (Mn), % 0 to 1.0
7.0 to 9.0
Nickel (Ni), % 70 to 77.7
8.0 to 9.0
Niobium (Nb), % 0.7 to 1.2
0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0 to 0.5
3.5 to 4.5
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 2.3 to 2.8
0