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SAE-AISI 4140 Steel vs. N07752 Nickel

SAE-AISI 4140 steel belongs to the iron alloys classification, while N07752 nickel belongs to the nickel alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 4140 steel and the bottom bar is N07752 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 26
22
Fatigue Strength, MPa 360 to 650
450
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 410 to 660
710
Tensile Strength: Ultimate (UTS), MPa 690 to 1080
1120
Tensile Strength: Yield (Proof), MPa 590 to 990
740

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 420
960
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1420
1330
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 43
13
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
60
Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 1.5
10
Embodied Energy, MJ/kg 20
150
Embodied Water, L/kg 51
260

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 74 to 180
220
Resilience: Unit (Modulus of Resilience), kJ/m3 920 to 2590
1450
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 25 to 38
37
Strength to Weight: Bending, points 22 to 30
29
Thermal Diffusivity, mm2/s 12
3.2
Thermal Shock Resistance, points 20 to 32
34

Alloy Composition

Aluminum (Al), % 0
0.4 to 1.0
Boron (B), % 0
0 to 0.0070
Carbon (C), % 0.38 to 0.43
0.020 to 0.060
Chromium (Cr), % 0.8 to 1.1
14.5 to 17
Cobalt (Co), % 0
0 to 0.050
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 96.8 to 97.8
5.0 to 9.0
Manganese (Mn), % 0.75 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.15 to 0.25
0
Nickel (Ni), % 0
70 to 77.1
Niobium (Nb), % 0
0.7 to 1.2
Phosphorus (P), % 0 to 0.035
0 to 0.0080
Silicon (Si), % 0.15 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.0030
Titanium (Ti), % 0
2.3 to 2.8
Vanadium (V), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.050