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SAE-AISI T6 Steel vs. Grade C-5 Titanium

SAE-AISI T6 steel belongs to the iron alloys classification, while grade C-5 titanium belongs to the titanium 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 SAE-AISI T6 steel and the bottom bar is grade C-5 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
110
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 81
40
Tensile Strength: Ultimate (UTS), MPa 880 to 2150
1000

Thermal Properties

Latent Heat of Fusion, J/g 250
410
Melting Completion (Liquidus), °C 1830
1610
Melting Onset (Solidus), °C 1770
1560
Specific Heat Capacity, J/kg-K 400
560
Thermal Conductivity, W/m-K 18
7.1
Thermal Expansion, µm/m-K 12
9.6

Otherwise Unclassified Properties

Base Metal Price, % relative 70
36
Density, g/cm3 9.5
4.4
Embodied Carbon, kg CO2/kg material 11
38
Embodied Energy, MJ/kg 170
610
Embodied Water, L/kg 160
200

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 21
35
Strength to Weight: Axial, points 26 to 63
63
Strength to Weight: Bending, points 21 to 39
50
Thermal Diffusivity, mm2/s 4.7
2.9
Thermal Shock Resistance, points 26 to 64
71

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.8
Carbon (C), % 0.75 to 0.85
0 to 0.1
Chromium (Cr), % 4.0 to 4.8
0
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 55.9 to 63.5
0 to 0.4
Manganese (Mn), % 0.2 to 0.4
0
Molybdenum (Mo), % 0.4 to 1.0
0
Nickel (Ni), % 0 to 0.3
0 to 0.050
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.4
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
87.5 to 91
Tungsten (W), % 18.5 to 21
0
Vanadium (V), % 1.5 to 2.1
3.5 to 4.5
Residuals, % 0
0 to 0.4