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Grade 6 Titanium vs. Grade 29 Titanium

Both grade 6 titanium and grade 29 titanium are titanium alloys. They have a moderately high 95% of their average alloy composition in common.

For each property being compared, the top bar is grade 6 titanium and the bottom bar is grade 29 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 11
6.8 to 11
Fatigue Strength, MPa 290
460 to 510
Poisson's Ratio 0.32
0.32
Reduction in Area, % 27
17
Shear Modulus, GPa 39
40
Shear Strength, MPa 530
550 to 560
Tensile Strength: Ultimate (UTS), MPa 890
930 to 940
Tensile Strength: Yield (Proof), MPa 840
850 to 870

Thermal Properties

Latent Heat of Fusion, J/g 410
410
Maximum Temperature: Mechanical, °C 310
340
Melting Completion (Liquidus), °C 1580
1610
Melting Onset (Solidus), °C 1530
1560
Specific Heat Capacity, J/kg-K 550
560
Thermal Conductivity, W/m-K 7.8
7.3
Thermal Expansion, µm/m-K 9.4
9.3

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 36
36
Density, g/cm3 4.5
4.5
Embodied Carbon, kg CO2/kg material 30
39
Embodied Energy, MJ/kg 480
640
Embodied Water, L/kg 190
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
62 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 3390
3420 to 3540
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
35
Strength to Weight: Axial, points 55
58 to 59
Strength to Weight: Bending, points 46
47 to 48
Thermal Diffusivity, mm2/s 3.2
2.9
Thermal Shock Resistance, points 65
68 to 69

Alloy Composition


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Aluminum (Al), % 4.0 to 6.0
5.5 to 6.5
Carbon (C), % 0 to 0.080
0 to 0.080
Hydrogen (H), % 0 to 0.015
0 to 0.015
Iron (Fe), % 0 to 0.5
0 to 0.25
Nitrogen (N), % 0 to 0.030
0 to 0.030
Oxygen (O), % 0 to 0.2
0 to 0.13
Ruthenium (Ru), % 0
0.080 to 0.14
Tin (Sn), % 2.0 to 3.0
0
Titanium (Ti), % 89.8 to 94
88 to 90.9
Vanadium (V), % 0
3.5 to 4.5
Residuals, % 0 to 0.4
0 to 0.4