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Monel K-500 vs. ASTM A369 Grade FP91

Monel K-500 belongs to the nickel alloys classification, while ASTM A369 grade FP91 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 K-500 and the bottom bar is ASTM A369 grade FP91.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
190
Elongation at Break, % 25 to 36
19
Fatigue Strength, MPa 260 to 560
320
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 61
75
Shear Strength, MPa 430 to 700
410
Tensile Strength: Ultimate (UTS), MPa 640 to 1100
670
Tensile Strength: Yield (Proof), MPa 310 to 880
460

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Maximum Temperature: Mechanical, °C 900
600
Melting Completion (Liquidus), °C 1350
1460
Melting Onset (Solidus), °C 1320
1420
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 18
26
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
8.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
10

Otherwise Unclassified Properties

Base Metal Price, % relative 50
7.0
Density, g/cm3 8.7
7.8
Embodied Carbon, kg CO2/kg material 8.1
2.6
Embodied Energy, MJ/kg 120
37
Embodied Water, L/kg 280
88

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180 to 260
110
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 2420
560
Stiffness to Weight: Axial, points 10
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 21 to 35
24
Strength to Weight: Bending, points 19 to 27
22
Thermal Diffusivity, mm2/s 4.8
6.9
Thermal Shock Resistance, points 21 to 36
18

Alloy Composition

Aluminum (Al), % 2.3 to 3.2
0 to 0.020
Carbon (C), % 0 to 0.18
0.080 to 0.12
Chromium (Cr), % 0
8.0 to 9.5
Copper (Cu), % 27 to 33
0
Iron (Fe), % 0 to 2.0
87.3 to 90.3
Manganese (Mn), % 0 to 1.5
0.3 to 0.6
Molybdenum (Mo), % 0
0.85 to 1.1
Nickel (Ni), % 63 to 70.4
0 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.5
0.2 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.025
Titanium (Ti), % 0.35 to 0.85
0 to 0.010
Vanadium (V), % 0
0.18 to 0.25
Zirconium (Zr), % 0
0 to 0.010