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Titanium 6-2-4-2 vs. Grade 18 Titanium

Both titanium 6-2-4-2 and grade 18 titanium are titanium alloys. They have 89% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is titanium 6-2-4-2 and the bottom bar is grade 18 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 8.6
11 to 17
Fatigue Strength, MPa 490
330 to 480
Poisson's Ratio 0.32
0.32
Reduction in Area, % 21
23
Shear Modulus, GPa 40
40
Shear Strength, MPa 560
420 to 590
Tensile Strength: Ultimate (UTS), MPa 950
690 to 980
Tensile Strength: Yield (Proof), MPa 880
540 to 810

Thermal Properties

Latent Heat of Fusion, J/g 400
410
Maximum Temperature: Mechanical, °C 300
330
Melting Completion (Liquidus), °C 1590
1640
Melting Onset (Solidus), °C 1540
1590
Specific Heat Capacity, J/kg-K 540
550
Thermal Conductivity, W/m-K 6.9
8.3
Thermal Expansion, µm/m-K 9.5
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 0.9
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
2.7

Otherwise Unclassified Properties

Density, g/cm3 4.6
4.5
Embodied Carbon, kg CO2/kg material 32
41
Embodied Energy, MJ/kg 520
670
Embodied Water, L/kg 210
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79
87 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 3640
1380 to 3110
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 34
35
Strength to Weight: Axial, points 57
43 to 61
Strength to Weight: Bending, points 46
39 to 49
Thermal Diffusivity, mm2/s 2.8
3.4
Thermal Shock Resistance, points 67
47 to 67

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
2.5 to 3.5
Carbon (C), % 0 to 0.050
0 to 0.080
Hydrogen (H), % 0 to 0.015
0 to 0.015
Iron (Fe), % 0 to 0.25
0 to 0.25
Molybdenum (Mo), % 1.8 to 2.2
0
Nitrogen (N), % 0 to 0.050
0 to 0.030
Oxygen (O), % 0 to 0.15
0 to 0.15
Palladium (Pd), % 0
0.040 to 0.080
Silicon (Si), % 0.060 to 0.12
0
Tin (Sn), % 1.8 to 2.2
0
Titanium (Ti), % 83.7 to 87.2
92.5 to 95.5
Vanadium (V), % 0
2.0 to 3.0
Zirconium (Zr), % 3.6 to 4.4
0
Residuals, % 0 to 0.4
0 to 0.4