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Nickel 30 vs. AISI 418 Stainless Steel

Nickel 30 belongs to the nickel alloys classification, while AISI 418 stainless steel belongs to the iron alloys. They have a modest 33% 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 AISI 418 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 34
17
Fatigue Strength, MPa 200
520
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 82
77
Shear Strength, MPa 440
680
Tensile Strength: Ultimate (UTS), MPa 660
1100
Tensile Strength: Yield (Proof), MPa 270
850

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Maximum Temperature: Mechanical, °C 1020
770
Melting Completion (Liquidus), °C 1480
1500
Melting Onset (Solidus), °C 1430
1460
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 10
25
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 60
15
Density, g/cm3 8.5
8.0
Embodied Carbon, kg CO2/kg material 9.4
2.9
Embodied Energy, MJ/kg 130
41
Embodied Water, L/kg 290
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
170
Resilience: Unit (Modulus of Resilience), kJ/m3 180
1830
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 22
38
Strength to Weight: Bending, points 20
29
Thermal Diffusivity, mm2/s 2.7
6.7
Thermal Shock Resistance, points 18
40

Alloy Composition

Carbon (C), % 0 to 0.030
0.15 to 0.2
Chromium (Cr), % 28 to 31.5
12 to 14
Cobalt (Co), % 0 to 5.0
0
Copper (Cu), % 1.0 to 2.4
0
Iron (Fe), % 13 to 17
78.5 to 83.6
Manganese (Mn), % 0 to 0.030
0 to 0.5
Molybdenum (Mo), % 4.0 to 6.0
0 to 0.5
Nickel (Ni), % 30.2 to 52.2
1.8 to 2.2
Niobium (Nb), % 0.3 to 1.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 0.5
Sulfur (S), % 0 to 0.020
0 to 0.030
Tungsten (W), % 1.5 to 4.0
2.5 to 3.5