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Grade Ti-Pd18 Titanium vs. SAE-AISI S4 Steel

Grade Ti-Pd18 titanium belongs to the titanium alloys classification, while SAE-AISI S4 steel belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is grade Ti-Pd18 titanium and the bottom bar is SAE-AISI S4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
72
Tensile Strength: Ultimate (UTS), MPa 710
670 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 410
280
Melting Completion (Liquidus), °C 1640
1430
Melting Onset (Solidus), °C 1590
1390
Specific Heat Capacity, J/kg-K 550
480
Thermal Conductivity, W/m-K 8.2
44
Thermal Expansion, µm/m-K 9.1
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.7

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 41
2.0
Embodied Energy, MJ/kg 670
29
Embodied Water, L/kg 270
48

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 44
24 to 77
Strength to Weight: Bending, points 39
22 to 48
Thermal Diffusivity, mm2/s 3.3
12
Thermal Shock Resistance, points 52
20 to 65

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0
Carbon (C), % 0 to 0.1
0.5 to 0.65
Chromium (Cr), % 0
0.1 to 0.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
95.2 to 96.9
Manganese (Mn), % 0
0.6 to 1.0
Nickel (Ni), % 0 to 0.050
0
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
1.8 to 2.3
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 92.5 to 95.5
0
Vanadium (V), % 2.0 to 3.0
0.15 to 0.35
Residuals, % 0 to 0.4
0