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Titanium 6-2-4-2 vs. Titanium 4-4-2

Both titanium 6-2-4-2 and titanium 4-4-2 are titanium alloys. They have a moderately high 94% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 titanium 4-4-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 8.6
10
Fatigue Strength, MPa 490
590 to 620
Poisson's Ratio 0.32
0.32
Reduction in Area, % 21
20
Shear Modulus, GPa 40
42
Shear Strength, MPa 560
690 to 750
Tensile Strength: Ultimate (UTS), MPa 950
1150 to 1250
Tensile Strength: Yield (Proof), MPa 880
1030 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 400
410
Maximum Temperature: Mechanical, °C 300
310
Melting Completion (Liquidus), °C 1590
1610
Melting Onset (Solidus), °C 1540
1560
Specific Heat Capacity, J/kg-K 540
540
Thermal Conductivity, W/m-K 6.9
6.7
Thermal Expansion, µm/m-K 9.5
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 42
39
Density, g/cm3 4.6
4.7
Embodied Carbon, kg CO2/kg material 32
30
Embodied Energy, MJ/kg 520
480
Embodied Water, L/kg 210
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 3640
4700 to 5160
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 34
34
Strength to Weight: Axial, points 57
68 to 74
Strength to Weight: Bending, points 46
52 to 55
Thermal Diffusivity, mm2/s 2.8
2.6
Thermal Shock Resistance, points 67
86 to 93

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
3.0 to 5.0
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 0.2
Molybdenum (Mo), % 1.8 to 2.2
3.0 to 5.0
Nitrogen (N), % 0 to 0.050
0 to 0.050
Oxygen (O), % 0 to 0.15
0 to 0.25
Silicon (Si), % 0.060 to 0.12
0.3 to 0.7
Tin (Sn), % 1.8 to 2.2
1.5 to 2.5
Titanium (Ti), % 83.7 to 87.2
85.8 to 92.2
Zirconium (Zr), % 3.6 to 4.4
0
Residuals, % 0 to 0.4
0 to 0.4