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Monel 400 vs. ASTM A387 Grade 2 Steel

Monel 400 belongs to the nickel alloys classification, while ASTM A387 grade 2 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 ASTM A387 grade 2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
190
Elongation at Break, % 20 to 40
25
Fatigue Strength, MPa 230 to 290
190 to 250
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 62
73
Shear Strength, MPa 370 to 490
300 to 350
Tensile Strength: Ultimate (UTS), MPa 540 to 780
470 to 550
Tensile Strength: Yield (Proof), MPa 210 to 590
260 to 350

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 1000
420
Melting Completion (Liquidus), °C 1350
1470
Melting Onset (Solidus), °C 1300
1420
Specific Heat Capacity, J/kg-K 430
470
Thermal Conductivity, W/m-K 23
45
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 50
2.6
Density, g/cm3 8.9
7.9
Embodied Carbon, kg CO2/kg material 7.9
1.6
Embodied Energy, MJ/kg 110
20
Embodied Water, L/kg 250
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 180
98 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 1080
180 to 320
Stiffness to Weight: Axial, points 10
13
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 17 to 25
16 to 20
Strength to Weight: Bending, points 17 to 21
17 to 19
Thermal Diffusivity, mm2/s 6.1
12
Thermal Shock Resistance, points 17 to 25
14 to 16

Alloy Composition

Carbon (C), % 0 to 0.3
0.050 to 0.21
Chromium (Cr), % 0
0.5 to 0.8
Copper (Cu), % 28 to 34
0
Iron (Fe), % 0 to 2.5
97.1 to 98.3
Manganese (Mn), % 0 to 2.0
0.55 to 0.8
Molybdenum (Mo), % 0
0.45 to 0.6
Nickel (Ni), % 63 to 72
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.5
0.15 to 0.4
Sulfur (S), % 0 to 0.024
0 to 0.025

Comparable Variants