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SAE-AISI 4140 Steel vs. Monel K-500

SAE-AISI 4140 steel belongs to the iron alloys classification, while Monel K-500 belongs to the nickel alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 4140 steel and the bottom bar is Monel K-500.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
160
Elongation at Break, % 11 to 26
25 to 36
Fatigue Strength, MPa 360 to 650
260 to 560
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
61
Shear Strength, MPa 410 to 660
430 to 700
Tensile Strength: Ultimate (UTS), MPa 690 to 1080
640 to 1100
Tensile Strength: Yield (Proof), MPa 590 to 990
310 to 880

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 420
900
Melting Completion (Liquidus), °C 1460
1350
Melting Onset (Solidus), °C 1420
1320
Specific Heat Capacity, J/kg-K 470
440
Thermal Conductivity, W/m-K 43
18
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
50
Density, g/cm3 7.8
8.7
Embodied Carbon, kg CO2/kg material 1.5
8.1
Embodied Energy, MJ/kg 20
120
Embodied Water, L/kg 51
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 74 to 180
180 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 920 to 2590
300 to 2420
Stiffness to Weight: Axial, points 13
10
Stiffness to Weight: Bending, points 24
21
Strength to Weight: Axial, points 25 to 38
21 to 35
Strength to Weight: Bending, points 22 to 30
19 to 27
Thermal Diffusivity, mm2/s 12
4.8
Thermal Shock Resistance, points 20 to 32
21 to 36

Alloy Composition

Aluminum (Al), % 0
2.3 to 3.2
Carbon (C), % 0.38 to 0.43
0 to 0.18
Chromium (Cr), % 0.8 to 1.1
0
Copper (Cu), % 0
27 to 33
Iron (Fe), % 96.8 to 97.8
0 to 2.0
Manganese (Mn), % 0.75 to 1.0
0 to 1.5
Molybdenum (Mo), % 0.15 to 0.25
0
Nickel (Ni), % 0
63 to 70.4
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.010
Titanium (Ti), % 0
0.35 to 0.85

Comparable Variants