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Nickel 30 vs. S20431 Stainless Steel

Nickel 30 belongs to the nickel alloys classification, while S20431 stainless steel belongs to the iron alloys. They have a modest 38% 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 nickel 30 and the bottom bar is S20431 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 34
46
Fatigue Strength, MPa 200
320
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 82
76
Shear Strength, MPa 440
500
Tensile Strength: Ultimate (UTS), MPa 660
710
Tensile Strength: Yield (Proof), MPa 270
350

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Maximum Temperature: Mechanical, °C 1020
890
Melting Completion (Liquidus), °C 1480
1400
Melting Onset (Solidus), °C 1430
1360
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 10
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 60
12
Density, g/cm3 8.5
7.7
Embodied Carbon, kg CO2/kg material 9.4
2.5
Embodied Energy, MJ/kg 130
36
Embodied Water, L/kg 290
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
270
Resilience: Unit (Modulus of Resilience), kJ/m3 180
310
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 22
25
Strength to Weight: Bending, points 20
23
Thermal Diffusivity, mm2/s 2.7
4.0
Thermal Shock Resistance, points 18
15

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.12
Chromium (Cr), % 28 to 31.5
17 to 18
Cobalt (Co), % 0 to 5.0
0
Copper (Cu), % 1.0 to 2.4
1.5 to 3.5
Iron (Fe), % 13 to 17
66.1 to 74.4
Manganese (Mn), % 0 to 0.030
5.0 to 7.0
Molybdenum (Mo), % 4.0 to 6.0
0
Nickel (Ni), % 30.2 to 52.2
2.0 to 4.0
Niobium (Nb), % 0.3 to 1.5
0
Nitrogen (N), % 0
0.1 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030
Tungsten (W), % 1.5 to 4.0
0