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Monel K-500 vs. S44800 Stainless Steel

Monel K-500 belongs to the nickel alloys classification, while S44800 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is Monel K-500 and the bottom bar is S44800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
210
Elongation at Break, % 25 to 36
23
Fatigue Strength, MPa 260 to 560
300
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 61
82
Shear Strength, MPa 430 to 700
370
Tensile Strength: Ultimate (UTS), MPa 640 to 1100
590
Tensile Strength: Yield (Proof), MPa 310 to 880
450

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Mechanical, °C 900
1100
Melting Completion (Liquidus), °C 1350
1460
Melting Onset (Solidus), °C 1320
1410
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 18
17
Thermal Expansion, µm/m-K 14
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 50
19
Density, g/cm3 8.7
7.8
Embodied Carbon, kg CO2/kg material 8.1
3.8
Embodied Energy, MJ/kg 120
52
Embodied Water, L/kg 280
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180 to 260
120
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 2420
480
Stiffness to Weight: Axial, points 10
15
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 21 to 35
21
Strength to Weight: Bending, points 19 to 27
20
Thermal Diffusivity, mm2/s 4.8
4.6
Thermal Shock Resistance, points 21 to 36
19

Alloy Composition

Aluminum (Al), % 2.3 to 3.2
0
Carbon (C), % 0 to 0.18
0 to 0.010
Chromium (Cr), % 0
28 to 30
Copper (Cu), % 27 to 33
0 to 0.15
Iron (Fe), % 0 to 2.0
62.6 to 66.5
Manganese (Mn), % 0 to 1.5
0 to 0.3
Molybdenum (Mo), % 0
3.5 to 4.2
Nickel (Ni), % 63 to 70.4
2.0 to 2.5
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.2
Sulfur (S), % 0 to 0.010
0 to 0.020
Titanium (Ti), % 0.35 to 0.85
0