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Nickel 693 vs. S44401 Stainless Steel

Nickel 693 belongs to the nickel alloys classification, while S44401 stainless steel belongs to the iron alloys. They have a modest 24% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 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 nickel 693 and the bottom bar is S44401 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
21
Fatigue Strength, MPa 230
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
78
Shear Strength, MPa 440
300
Tensile Strength: Ultimate (UTS), MPa 660
480
Tensile Strength: Yield (Proof), MPa 310
300

Thermal Properties

Latent Heat of Fusion, J/g 330
280
Maximum Temperature: Mechanical, °C 1010
930
Melting Completion (Liquidus), °C 1350
1460
Melting Onset (Solidus), °C 1310
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 9.1
22
Thermal Expansion, µm/m-K 13
10

Otherwise Unclassified Properties

Base Metal Price, % relative 60
12
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 9.9
2.9
Embodied Energy, MJ/kg 140
40
Embodied Water, L/kg 320
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
90
Resilience: Unit (Modulus of Resilience), kJ/m3 250
230
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23
17
Strength to Weight: Bending, points 21
18
Thermal Diffusivity, mm2/s 2.3
5.9
Thermal Shock Resistance, points 19
17

Alloy Composition

Aluminum (Al), % 2.5 to 4.0
0
Carbon (C), % 0 to 0.15
0 to 0.025
Chromium (Cr), % 27 to 31
17.5 to 19.5
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 2.5 to 6.0
75.1 to 80.6
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
1.8 to 2.5
Nickel (Ni), % 53.3 to 67.5
0 to 1.0
Niobium (Nb), % 0.5 to 2.5
0
Nitrogen (N), % 0
0 to 0.035
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0 to 1.0
0.2 to 0.8