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Monel 400 vs. SAE-AISI 1018 Steel

Monel 400 belongs to the nickel alloys classification, while SAE-AISI 1018 steel belongs to the iron alloys. 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 Monel 400 and the bottom bar is SAE-AISI 1018 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
190
Elongation at Break, % 20 to 40
17 to 27
Fatigue Strength, MPa 230 to 290
180 to 270
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 62
73
Shear Strength, MPa 370 to 490
280 to 300
Tensile Strength: Ultimate (UTS), MPa 540 to 780
430 to 480
Tensile Strength: Yield (Proof), MPa 210 to 590
240 to 400

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 1000
400
Melting Completion (Liquidus), °C 1350
1460
Melting Onset (Solidus), °C 1300
1420
Specific Heat Capacity, J/kg-K 430
470
Thermal Conductivity, W/m-K 23
52
Thermal Expansion, µm/m-K 14
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 50
1.8
Density, g/cm3 8.9
7.9
Embodied Carbon, kg CO2/kg material 7.9
1.4
Embodied Energy, MJ/kg 110
18
Embodied Water, L/kg 250
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 180
75 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 1080
150 to 430
Stiffness to Weight: Axial, points 10
13
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 17 to 25
15 to 17
Strength to Weight: Bending, points 17 to 21
16 to 17
Thermal Diffusivity, mm2/s 6.1
14
Thermal Shock Resistance, points 17 to 25
14 to 15

Alloy Composition

Carbon (C), % 0 to 0.3
0.15 to 0.2
Copper (Cu), % 28 to 34
0
Iron (Fe), % 0 to 2.5
98.8 to 99.25
Manganese (Mn), % 0 to 2.0
0.6 to 0.9
Nickel (Ni), % 63 to 72
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.024
0 to 0.050

Comparable Variants