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SAE-AISI 4320 Steel vs. N06920 Nickel

SAE-AISI 4320 steel belongs to the iron alloys classification, while N06920 nickel belongs to the nickel alloys. They have a modest 22% 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 (1, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 4320 steel and the bottom bar is N06920 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 21 to 29
39
Fatigue Strength, MPa 320
220
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
82
Shear Strength, MPa 370 to 500
500
Tensile Strength: Ultimate (UTS), MPa 570 to 790
730
Tensile Strength: Yield (Proof), MPa 430 to 460
270

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 420
990
Melting Completion (Liquidus), °C 1460
1500
Melting Onset (Solidus), °C 1420
1440
Specific Heat Capacity, J/kg-K 470
440
Thermal Conductivity, W/m-K 46
11
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
55
Density, g/cm3 7.9
8.6
Embodied Carbon, kg CO2/kg material 1.7
9.4
Embodied Energy, MJ/kg 22
130
Embodied Water, L/kg 52
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 150
230
Resilience: Unit (Modulus of Resilience), kJ/m3 480 to 560
180
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 20 to 28
24
Strength to Weight: Bending, points 19 to 24
21
Thermal Diffusivity, mm2/s 13
2.8
Thermal Shock Resistance, points 19 to 27
19

Alloy Composition

Carbon (C), % 0.17 to 0.22
0 to 0.030
Chromium (Cr), % 0.4 to 0.6
20.5 to 23
Cobalt (Co), % 0
0 to 5.0
Iron (Fe), % 95.8 to 97
17 to 20
Manganese (Mn), % 0.45 to 0.65
0 to 1.0
Molybdenum (Mo), % 0.2 to 0.3
8.0 to 10
Nickel (Ni), % 1.7 to 2.0
36.9 to 53.5
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030
Tungsten (W), % 0
1.0 to 3.0