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Grade Ti-Pd18 Titanium vs. SAE-AISI T5 Steel

Grade Ti-Pd18 titanium belongs to the titanium alloys classification, while SAE-AISI T5 steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, 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 grade Ti-Pd18 titanium and the bottom bar is SAE-AISI T5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
210
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
80
Tensile Strength: Ultimate (UTS), MPa 710
860 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Melting Completion (Liquidus), °C 1640
1810
Melting Onset (Solidus), °C 1590
1750
Specific Heat Capacity, J/kg-K 550
410
Thermal Conductivity, W/m-K 8.2
21
Thermal Expansion, µm/m-K 9.1
11

Otherwise Unclassified Properties

Density, g/cm3 4.5
9.4
Embodied Carbon, kg CO2/kg material 41
11
Embodied Energy, MJ/kg 670
170
Embodied Water, L/kg 270
140

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 35
21
Strength to Weight: Axial, points 44
25 to 63
Strength to Weight: Bending, points 39
21 to 39
Thermal Diffusivity, mm2/s 3.3
5.5
Thermal Shock Resistance, points 52
26 to 66

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0
Carbon (C), % 0 to 0.1
0.75 to 0.85
Chromium (Cr), % 0
3.8 to 5.0
Cobalt (Co), % 0
7.0 to 9.5
Copper (Cu), % 0
0 to 0.25
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
60.6 to 68.3
Manganese (Mn), % 0
0.2 to 0.4
Molybdenum (Mo), % 0
0.5 to 1.3
Nickel (Ni), % 0 to 0.050
0 to 0.3
Oxygen (O), % 0 to 0.15
0
Palladium (Pd), % 0.040 to 0.080
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), % 92.5 to 95.5
0
Tungsten (W), % 0
17.5 to 19
Vanadium (V), % 2.0 to 3.0
1.8 to 2.4
Residuals, % 0 to 0.4
0