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AISI 418 Stainless Steel vs. SAE-AISI F2 Steel

Both AISI 418 stainless steel and SAE-AISI F2 steel are iron alloys. They have 85% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is AISI 418 stainless steel and the bottom bar is SAE-AISI F2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 1100
710 to 2360

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1500
1520
Melting Onset (Solidus), °C 1460
1470
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 25
42
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 15
10
Density, g/cm3 8.0
8.1
Embodied Carbon, kg CO2/kg material 2.9
2.3
Embodied Energy, MJ/kg 41
32
Embodied Water, L/kg 110
50

Common Calculations

PREN (Pitting Resistance) 19
6.5
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 38
24 to 81
Strength to Weight: Bending, points 29
22 to 49
Thermal Diffusivity, mm2/s 6.7
11
Thermal Shock Resistance, points 40
21 to 71

Alloy Composition

Carbon (C), % 0.15 to 0.2
1.2 to 1.4
Chromium (Cr), % 12 to 14
0.2 to 0.4
Iron (Fe), % 78.5 to 83.6
92.6 to 95.4
Manganese (Mn), % 0 to 0.5
0.1 to 0.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 1.8 to 2.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.5
0.1 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 2.5 to 3.5
3.0 to 4.5