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Monel 400 vs. ACI-ASTM CA40F Steel

Monel 400 belongs to the nickel alloys classification, while ACI-ASTM CA40F steel belongs to the iron alloys. There are 29 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 ACI-ASTM CA40F steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
190
Elongation at Break, % 20 to 40
13
Fatigue Strength, MPa 230 to 290
320
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 62
76
Tensile Strength: Ultimate (UTS), MPa 540 to 780
770
Tensile Strength: Yield (Proof), MPa 210 to 590
550

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Mechanical, °C 1000
750
Melting Completion (Liquidus), °C 1350
1430
Melting Onset (Solidus), °C 1300
1390
Specific Heat Capacity, J/kg-K 430
480
Thermal Conductivity, W/m-K 23
27
Thermal Expansion, µm/m-K 14
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 50
7.5
Density, g/cm3 8.9
7.7
Embodied Carbon, kg CO2/kg material 7.9
2.0
Embodied Energy, MJ/kg 110
28
Embodied Water, L/kg 250
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 180
94
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 1080
790
Stiffness to Weight: Axial, points 10
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 17 to 25
28
Strength to Weight: Bending, points 17 to 21
24
Thermal Diffusivity, mm2/s 6.1
7.2
Thermal Shock Resistance, points 17 to 25
28

Alloy Composition

Carbon (C), % 0 to 0.3
0.2 to 0.4
Chromium (Cr), % 0
11.5 to 14
Copper (Cu), % 28 to 34
0
Iron (Fe), % 0 to 2.5
81.6 to 88.3
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 63 to 72
0 to 1.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.5
Sulfur (S), % 0 to 0.024
0.2 to 0.4