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Class 2 Tungsten vs. Grade Ti-Pd18 Titanium

Class 2 tungsten belongs to the otherwise unclassified metals classification, while grade Ti-Pd18 titanium belongs to the titanium alloys. There are 25 material properties with values for both materials. Properties with values for just one material (5, 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 class 2 tungsten and the bottom bar is grade Ti-Pd18 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 260
110
Elongation at Break, % 5.7
17
Poisson's Ratio 0.28
0.32
Rockwell C Hardness 29
34
Shear Modulus, GPa 100
40
Tensile Strength: Ultimate (UTS), MPa 860
710
Tensile Strength: Yield (Proof), MPa 580
540

Thermal Properties

Latent Heat of Fusion, J/g 160
410
Specific Heat Capacity, J/kg-K 120
550
Thermal Conductivity, W/m-K 20
8.2
Thermal Expansion, µm/m-K 4.6
9.1

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 7.8
2.7

Otherwise Unclassified Properties

Density, g/cm3 15
4.5
Embodied Carbon, kg CO2/kg material 23
41
Embodied Energy, MJ/kg 350
670
Embodied Water, L/kg 140
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44
110
Resilience: Unit (Modulus of Resilience), kJ/m3 640
1380
Stiffness to Weight: Axial, points 9.6
13
Stiffness to Weight: Bending, points 14
35
Strength to Weight: Axial, points 16
44
Strength to Weight: Bending, points 13
39
Thermal Diffusivity, mm2/s 11
3.3
Thermal Shock Resistance, points 52
52

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 0
0 to 0.1
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0
0 to 0.25
Nickel (Ni), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.15
Palladium (Pd), % 0
0.040 to 0.080
Titanium (Ti), % 0
92.5 to 95.5
Tungsten (W), % 92.5
0
Vanadium (V), % 0
2.0 to 3.0
Residuals, % 0
0 to 0.4