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SAE-AISI F1 Steel vs. AISI 418 Stainless Steel

Both SAE-AISI F1 steel and AISI 418 stainless steel are iron alloys. They have 83% 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 SAE-AISI F1 steel and the bottom bar is AISI 418 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
77
Tensile Strength: Ultimate (UTS), MPa 620 to 2320
1100

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1480
1500
Melting Onset (Solidus), °C 1430
1460
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 45
25
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
15
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 1.7
2.9
Embodied Energy, MJ/kg 24
41
Embodied Water, L/kg 46
110

Common Calculations

PREN (Pitting Resistance) 2.3
19
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22 to 82
38
Strength to Weight: Bending, points 20 to 49
29
Thermal Diffusivity, mm2/s 12
6.7
Thermal Shock Resistance, points 19 to 70
40

Alloy Composition

Carbon (C), % 1.0 to 1.3
0.15 to 0.2
Chromium (Cr), % 0
12 to 14
Iron (Fe), % 95.9 to 98
78.5 to 83.6
Manganese (Mn), % 0 to 0.5
0 to 0.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
1.8 to 2.2
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.1 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 1.0 to 1.8
2.5 to 3.5