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R56401 Titanium vs. SAE-AISI T2 Steel

R56401 titanium belongs to the titanium alloys classification, while SAE-AISI T2 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is R56401 titanium and the bottom bar is SAE-AISI T2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
79
Tensile Strength: Ultimate (UTS), MPa 940
780 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Melting Completion (Liquidus), °C 1610
1820
Melting Onset (Solidus), °C 1560
1760
Specific Heat Capacity, J/kg-K 560
410
Thermal Conductivity, W/m-K 7.1
19
Thermal Expansion, µm/m-K 9.6
12

Otherwise Unclassified Properties

Base Metal Price, % relative 36
46
Density, g/cm3 4.5
9.3
Embodied Carbon, kg CO2/kg material 38
11
Embodied Energy, MJ/kg 610
170
Embodied Water, L/kg 200
98

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 35
21
Strength to Weight: Axial, points 59
23 to 64
Strength to Weight: Bending, points 48
20 to 40
Thermal Diffusivity, mm2/s 2.9
4.9
Thermal Shock Resistance, points 67
23 to 65

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0 to 0.080
0.8 to 0.9
Chromium (Cr), % 0
3.8 to 4.5
Copper (Cu), % 0
0 to 0.25
Hydrogen (H), % 0 to 0.012
0
Iron (Fe), % 0 to 0.25
70.8 to 75.8
Manganese (Mn), % 0
0.2 to 0.4
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 0.3
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.13
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.2 to 0.4
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 88.5 to 91
0
Tungsten (W), % 0
17.5 to 19
Vanadium (V), % 3.5 to 4.5
1.8 to 2.4