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SAE-AISI F2 Steel vs. Grade 31 Titanium

SAE-AISI F2 steel belongs to the iron alloys classification, while grade 31 titanium belongs to the titanium alloys. There are 22 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 F2 steel and the bottom bar is grade 31 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
41
Tensile Strength: Ultimate (UTS), MPa 710 to 2360
510

Thermal Properties

Latent Heat of Fusion, J/g 250
420
Melting Completion (Liquidus), °C 1520
1660
Melting Onset (Solidus), °C 1470
1610
Specific Heat Capacity, J/kg-K 460
540
Thermal Conductivity, W/m-K 42
21
Thermal Expansion, µm/m-K 13
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
6.9

Otherwise Unclassified Properties

Density, g/cm3 8.1
4.5
Embodied Carbon, kg CO2/kg material 2.3
36
Embodied Energy, MJ/kg 32
600
Embodied Water, L/kg 50
230

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 24 to 81
32
Strength to Weight: Bending, points 22 to 49
32
Thermal Diffusivity, mm2/s 11
8.5
Thermal Shock Resistance, points 21 to 71
39

Alloy Composition

Carbon (C), % 1.2 to 1.4
0 to 0.080
Chromium (Cr), % 0.2 to 0.4
0
Cobalt (Co), % 0
0.2 to 0.8
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 92.6 to 95.4
0 to 0.3
Manganese (Mn), % 0.1 to 0.5
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.35
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.1 to 0.5
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
97.9 to 99.76
Tungsten (W), % 3.0 to 4.5
0
Residuals, % 0
0 to 0.4