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SAE-AISI O1 Steel vs. R56401 Titanium

SAE-AISI O1 steel belongs to the iron alloys classification, while R56401 titanium belongs to the titanium alloys. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI O1 steel and the bottom bar is R56401 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 72
40
Tensile Strength: Ultimate (UTS), MPa 640 to 2060
940

Thermal Properties

Latent Heat of Fusion, J/g 250
410
Melting Completion (Liquidus), °C 1460
1610
Melting Onset (Solidus), °C 1420
1560
Specific Heat Capacity, J/kg-K 470
560
Thermal Conductivity, W/m-K 43
7.1
Thermal Expansion, µm/m-K 12
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
36
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 1.9
38
Embodied Energy, MJ/kg 27
610
Embodied Water, L/kg 51
200

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 23 to 73
59
Strength to Weight: Bending, points 21 to 46
48
Thermal Diffusivity, mm2/s 12
2.9
Thermal Shock Resistance, points 21 to 68
67

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0.85 to 1.0
0 to 0.080
Chromium (Cr), % 0.4 to 0.6
0
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.012
Iron (Fe), % 95 to 97.4
0 to 0.25
Manganese (Mn), % 1.0 to 1.4
0
Nickel (Ni), % 0 to 0.3
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.13
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
88.5 to 91
Tungsten (W), % 0.4 to 0.6
0
Vanadium (V), % 0 to 0.3
3.5 to 4.5