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SAE-AISI 1146 Steel vs. Nickel 718

SAE-AISI 1146 steel belongs to the iron alloys classification, while nickel 718 belongs to the nickel alloys. There are 31 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 SAE-AISI 1146 steel and the bottom bar is nickel 718.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 13 to 17
12 to 50
Fatigue Strength, MPa 240 to 400
460 to 760
Poisson's Ratio 0.29
0.29
Reduction in Area, % 40 to 45
34 to 64
Shear Modulus, GPa 72
75
Shear Strength, MPa 410 to 440
660 to 950
Tensile Strength: Ultimate (UTS), MPa 670 to 730
930 to 1530
Tensile Strength: Yield (Proof), MPa 360 to 630
510 to 1330

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 400
980
Melting Completion (Liquidus), °C 1460
1340
Melting Onset (Solidus), °C 1420
1260
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 51
11
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
75
Density, g/cm3 7.8
8.3
Embodied Carbon, kg CO2/kg material 1.4
13
Embodied Energy, MJ/kg 18
190
Embodied Water, L/kg 46
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93 to 97
140 to 390
Resilience: Unit (Modulus of Resilience), kJ/m3 340 to 1050
660 to 4560
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 24 to 26
31 to 51
Strength to Weight: Bending, points 22 to 23
25 to 35
Thermal Diffusivity, mm2/s 14
3.0
Thermal Shock Resistance, points 20 to 22
27 to 44

Alloy Composition

Aluminum (Al), % 0
0.2 to 0.8
Boron (B), % 0
0 to 0.0060
Carbon (C), % 0.42 to 0.49
0 to 0.080
Chromium (Cr), % 0
17 to 21
Cobalt (Co), % 0
0 to 1.0
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 98.3 to 98.8
11.1 to 24.6
Manganese (Mn), % 0.7 to 1.0
0 to 0.35
Molybdenum (Mo), % 0
2.8 to 3.3
Nickel (Ni), % 0
50 to 55
Niobium (Nb), % 0
4.8 to 5.5
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0
0 to 0.35
Sulfur (S), % 0.080 to 0.13
0 to 0.015
Titanium (Ti), % 0
0.65 to 1.2