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AISI 418 Stainless Steel vs. EN 1.1118 Cast Steel

Both AISI 418 stainless steel and EN 1.1118 cast steel are iron alloys. They have 82% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is AISI 418 stainless steel and the bottom bar is EN 1.1118 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
14 to 21
Fatigue Strength, MPa 520
320 to 400
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 1100
700 to 750
Tensile Strength: Yield (Proof), MPa 850
460 to 630

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 770
400
Melting Completion (Liquidus), °C 1500
1460
Melting Onset (Solidus), °C 1460
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 25
51
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 15
1.9
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 2.9
1.4
Embodied Energy, MJ/kg 41
19
Embodied Water, L/kg 110
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
97 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 1830
550 to 1050
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 38
25 to 27
Strength to Weight: Bending, points 29
22 to 23
Thermal Diffusivity, mm2/s 6.7
14
Thermal Shock Resistance, points 40
22 to 24

Alloy Composition

Carbon (C), % 0.15 to 0.2
0.2 to 0.25
Chromium (Cr), % 12 to 14
0
Iron (Fe), % 78.5 to 83.6
97.3 to 98.3
Manganese (Mn), % 0 to 0.5
1.5 to 1.8
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 1.8 to 2.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 0.5
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 2.5 to 3.5
0