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Nickel 718 vs. SAE-AISI 1141 Steel

Nickel 718 belongs to the nickel alloys classification, while SAE-AISI 1141 steel belongs to the iron 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 nickel 718 and the bottom bar is SAE-AISI 1141 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12 to 50
11 to 17
Fatigue Strength, MPa 460 to 760
270 to 430
Poisson's Ratio 0.29
0.29
Reduction in Area, % 34 to 64
34 to 39
Shear Modulus, GPa 75
72
Shear Strength, MPa 660 to 950
460 to 480
Tensile Strength: Ultimate (UTS), MPa 930 to 1530
740 to 810
Tensile Strength: Yield (Proof), MPa 510 to 1330
400 to 700

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 980
400
Melting Completion (Liquidus), °C 1340
1460
Melting Onset (Solidus), °C 1260
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 11
51
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
10
Electrical Conductivity: Equal Weight (Specific), % IACS 1.5
12

Otherwise Unclassified Properties

Base Metal Price, % relative 75
1.9
Density, g/cm3 8.3
7.8
Embodied Carbon, kg CO2/kg material 13
1.4
Embodied Energy, MJ/kg 190
19
Embodied Water, L/kg 250
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 390
86 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 660 to 4560
430 to 1290
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 31 to 51
26 to 29
Strength to Weight: Bending, points 25 to 35
23 to 25
Thermal Diffusivity, mm2/s 3.0
14
Thermal Shock Resistance, points 27 to 44
24 to 26

Alloy Composition

Aluminum (Al), % 0.2 to 0.8
0
Boron (B), % 0 to 0.0060
0
Carbon (C), % 0 to 0.080
0.37 to 0.45
Chromium (Cr), % 17 to 21
0
Cobalt (Co), % 0 to 1.0
0
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 11.1 to 24.6
97.7 to 98.2
Manganese (Mn), % 0 to 0.35
1.4 to 1.7
Molybdenum (Mo), % 2.8 to 3.3
0
Nickel (Ni), % 50 to 55
0
Niobium (Nb), % 4.8 to 5.5
0
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.35
0
Sulfur (S), % 0 to 0.015
0.080 to 0.13
Titanium (Ti), % 0.65 to 1.2
0