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Monel K-500 vs. ACI-ASTM CF8 Steel

Monel K-500 belongs to the nickel alloys classification, while ACI-ASTM CF8 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 K-500 and the bottom bar is ACI-ASTM CF8 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
200
Elongation at Break, % 25 to 36
55
Fatigue Strength, MPa 260 to 560
260
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 61
77
Tensile Strength: Ultimate (UTS), MPa 640 to 1100
540
Tensile Strength: Yield (Proof), MPa 310 to 880
260

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Mechanical, °C 900
980
Melting Completion (Liquidus), °C 1350
1420
Melting Onset (Solidus), °C 1320
1430
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 18
16
Thermal Expansion, µm/m-K 14
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 50
16
Density, g/cm3 8.7
7.8
Embodied Carbon, kg CO2/kg material 8.1
3.1
Embodied Energy, MJ/kg 120
44
Embodied Water, L/kg 280
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180 to 260
240
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 2420
160
Stiffness to Weight: Axial, points 10
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 21 to 35
19
Strength to Weight: Bending, points 19 to 27
19
Thermal Diffusivity, mm2/s 4.8
4.3
Thermal Shock Resistance, points 21 to 36
13

Alloy Composition

Aluminum (Al), % 2.3 to 3.2
0
Carbon (C), % 0 to 0.18
0 to 0.080
Chromium (Cr), % 0
18 to 21
Copper (Cu), % 27 to 33
0
Iron (Fe), % 0 to 2.0
63.8 to 74
Manganese (Mn), % 0 to 1.5
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 63 to 70.4
8.0 to 11
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 2.0
Sulfur (S), % 0 to 0.010
0 to 0.040
Titanium (Ti), % 0.35 to 0.85
0