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Monel K-500 vs. EN 1.4958 Stainless Steel

Monel K-500 belongs to the nickel alloys classification, while EN 1.4958 stainless steel belongs to the iron alloys. They have a modest 34% of their average alloy composition in common, which, by itself, doesn't mean much. 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 EN 1.4958 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
200
Elongation at Break, % 25 to 36
40
Fatigue Strength, MPa 260 to 560
170
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 61
77
Shear Strength, MPa 430 to 700
430
Tensile Strength: Ultimate (UTS), MPa 640 to 1100
630
Tensile Strength: Yield (Proof), MPa 310 to 880
190

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Mechanical, °C 900
1090
Melting Completion (Liquidus), °C 1350
1400
Melting Onset (Solidus), °C 1320
1350
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 18
12
Thermal Expansion, µm/m-K 14
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 50
30
Density, g/cm3 8.7
8.0
Embodied Carbon, kg CO2/kg material 8.1
5.3
Embodied Energy, MJ/kg 120
75
Embodied Water, L/kg 280
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180 to 260
190
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 2420
95
Stiffness to Weight: Axial, points 10
14
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 21 to 35
22
Strength to Weight: Bending, points 19 to 27
20
Thermal Diffusivity, mm2/s 4.8
3.2
Thermal Shock Resistance, points 21 to 36
15

Alloy Composition

Aluminum (Al), % 2.3 to 3.2
0.2 to 0.5
Carbon (C), % 0 to 0.18
0.030 to 0.080
Chromium (Cr), % 0
19 to 22
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 27 to 33
0 to 0.5
Iron (Fe), % 0 to 2.0
41.1 to 50.6
Manganese (Mn), % 0 to 1.5
0 to 1.5
Nickel (Ni), % 63 to 70.4
30 to 32.5
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 0.5
0 to 0.7
Sulfur (S), % 0 to 0.010
0 to 0.010
Titanium (Ti), % 0.35 to 0.85
0.2 to 0.5