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Monel 400 vs. SAE-AISI M4 Steel

Monel 400 belongs to the nickel alloys classification, while SAE-AISI M4 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is Monel 400 and the bottom bar is SAE-AISI M4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
200
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 62
76
Tensile Strength: Ultimate (UTS), MPa 540 to 780
770 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Melting Completion (Liquidus), °C 1350
1610
Melting Onset (Solidus), °C 1300
1560
Specific Heat Capacity, J/kg-K 430
440
Thermal Conductivity, W/m-K 23
25
Thermal Expansion, µm/m-K 14
12

Otherwise Unclassified Properties

Base Metal Price, % relative 50
25
Density, g/cm3 8.9
8.3
Embodied Carbon, kg CO2/kg material 7.9
14
Embodied Energy, MJ/kg 110
210
Embodied Water, L/kg 250
110

Common Calculations

Stiffness to Weight: Axial, points 10
13
Stiffness to Weight: Bending, points 21
23
Strength to Weight: Axial, points 17 to 25
26 to 72
Strength to Weight: Bending, points 17 to 21
23 to 45
Thermal Diffusivity, mm2/s 6.1
6.9
Thermal Shock Resistance, points 17 to 25
24 to 68

Alloy Composition

Carbon (C), % 0 to 0.3
1.3 to 1.4
Chromium (Cr), % 0
3.8 to 4.8
Copper (Cu), % 28 to 34
0 to 0.25
Iron (Fe), % 0 to 2.5
75.9 to 81.4
Manganese (Mn), % 0 to 2.0
0.15 to 0.4
Molybdenum (Mo), % 0
4.3 to 5.5
Nickel (Ni), % 63 to 72
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.5
0.2 to 0.45
Sulfur (S), % 0 to 0.024
0 to 0.030
Tungsten (W), % 0
5.3 to 6.5
Vanadium (V), % 0
3.8 to 4.5

Comparable Variants