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Monel 400 vs. N08320 Stainless Steel

Monel 400 belongs to the nickel alloys classification, while N08320 stainless steel belongs to the iron alloys. They have a modest 29% 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 (6, in this case) are not shown.

For each property being compared, the top bar is Monel 400 and the bottom bar is N08320 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
200
Elongation at Break, % 20 to 40
40
Fatigue Strength, MPa 230 to 290
190
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 62
78
Shear Strength, MPa 370 to 490
400
Tensile Strength: Ultimate (UTS), MPa 540 to 780
580
Tensile Strength: Yield (Proof), MPa 210 to 590
220

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Mechanical, °C 1000
1100
Melting Completion (Liquidus), °C 1350
1400
Melting Onset (Solidus), °C 1300
1350
Specific Heat Capacity, J/kg-K 430
480
Thermal Conductivity, W/m-K 23
12
Thermal Expansion, µm/m-K 14
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 50
28
Density, g/cm3 8.9
8.0
Embodied Carbon, kg CO2/kg material 7.9
4.9
Embodied Energy, MJ/kg 110
69
Embodied Water, L/kg 250
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 180
180
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 1080
120
Stiffness to Weight: Axial, points 10
14
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 17 to 25
20
Strength to Weight: Bending, points 17 to 21
20
Thermal Diffusivity, mm2/s 6.1
3.3
Thermal Shock Resistance, points 17 to 25
13

Alloy Composition

Carbon (C), % 0 to 0.3
0 to 0.050
Chromium (Cr), % 0
21 to 23
Copper (Cu), % 28 to 34
0
Iron (Fe), % 0 to 2.5
40.4 to 50
Manganese (Mn), % 0 to 2.0
0 to 2.5
Nickel (Ni), % 63 to 72
25 to 27
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.024
0 to 0.030