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SAE-AISI F2 Steel vs. S31727 Stainless Steel

Both SAE-AISI F2 steel and S31727 stainless steel are iron alloys. They have 58% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI F2 steel and the bottom bar is S31727 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 73
78
Tensile Strength: Ultimate (UTS), MPa 710 to 2360
630

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Melting Completion (Liquidus), °C 1520
1440
Melting Onset (Solidus), °C 1470
1390
Specific Heat Capacity, J/kg-K 460
470
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 10
24
Density, g/cm3 8.1
8.0
Embodied Carbon, kg CO2/kg material 2.3
4.7
Embodied Energy, MJ/kg 32
64
Embodied Water, L/kg 50
180

Common Calculations

PREN (Pitting Resistance) 6.5
35
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24 to 81
22
Strength to Weight: Bending, points 22 to 49
20
Thermal Shock Resistance, points 21 to 71
14

Alloy Composition

Carbon (C), % 1.2 to 1.4
0 to 0.030
Chromium (Cr), % 0.2 to 0.4
17.5 to 19
Copper (Cu), % 0
2.8 to 4.0
Iron (Fe), % 92.6 to 95.4
53.7 to 61.3
Manganese (Mn), % 0.1 to 0.5
0 to 1.0
Molybdenum (Mo), % 0
3.8 to 4.5
Nickel (Ni), % 0
14.5 to 16.5
Nitrogen (N), % 0
0.15 to 0.21
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.1 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 3.0 to 4.5
0