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Monel 400 vs. SAE-AISI A4 Steel

Monel 400 belongs to the nickel alloys classification, while SAE-AISI A4 steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is Monel 400 and the bottom bar is SAE-AISI A4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
190
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 62
73
Tensile Strength: Ultimate (UTS), MPa 540 to 780
710 to 2050

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1350
1450
Melting Onset (Solidus), °C 1300
1410
Specific Heat Capacity, J/kg-K 430
470
Thermal Conductivity, W/m-K 23
40
Thermal Expansion, µm/m-K 14
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 50
3.9
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 7.9
1.8
Embodied Energy, MJ/kg 110
24
Embodied Water, L/kg 250
59

Common Calculations

Stiffness to Weight: Axial, points 10
13
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 17 to 25
25 to 73
Strength to Weight: Bending, points 17 to 21
23 to 46
Thermal Diffusivity, mm2/s 6.1
11
Thermal Shock Resistance, points 17 to 25
23 to 67

Alloy Composition

Carbon (C), % 0 to 0.3
1.0 to 1.1
Chromium (Cr), % 0
0.9 to 2.2
Copper (Cu), % 28 to 34
0 to 0.25
Iron (Fe), % 0 to 2.5
92 to 95.5
Manganese (Mn), % 0 to 2.0
1.8 to 2.2
Molybdenum (Mo), % 0
0.9 to 1.4
Nickel (Ni), % 63 to 72
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.024
0 to 0.030

Comparable Variants