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Grade 32 Titanium vs. Grade 29 Titanium

Both grade 32 titanium and grade 29 titanium are titanium alloys. They have a very high 96% of their average alloy composition in common.

For each property being compared, the top bar is grade 32 titanium and the bottom bar is grade 29 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 11
6.8 to 11
Fatigue Strength, MPa 390
460 to 510
Poisson's Ratio 0.32
0.32
Reduction in Area, % 28
17
Shear Modulus, GPa 40
40
Shear Strength, MPa 460
550 to 560
Tensile Strength: Ultimate (UTS), MPa 770
930 to 940
Tensile Strength: Yield (Proof), MPa 670
850 to 870

Thermal Properties

Latent Heat of Fusion, J/g 410
410
Maximum Temperature: Mechanical, °C 310
340
Melting Completion (Liquidus), °C 1610
1610
Melting Onset (Solidus), °C 1560
1560
Specific Heat Capacity, J/kg-K 550
560
Thermal Conductivity, W/m-K 7.5
7.3
Thermal Expansion, µm/m-K 8.2
9.3

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 38
36
Density, g/cm3 4.5
4.5
Embodied Carbon, kg CO2/kg material 32
39
Embodied Energy, MJ/kg 530
640
Embodied Water, L/kg 180
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83
62 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 2100
3420 to 3540
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
35
Strength to Weight: Axial, points 47
58 to 59
Strength to Weight: Bending, points 41
47 to 48
Thermal Diffusivity, mm2/s 3.0
2.9
Thermal Shock Resistance, points 63
68 to 69

Alloy Composition

Aluminum (Al), % 4.5 to 5.5
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 0.25
0 to 0.25
Molybdenum (Mo), % 0.6 to 1.2
0
Nitrogen (N), % 0 to 0.030
0 to 0.030
Oxygen (O), % 0 to 0.11
0 to 0.13
Ruthenium (Ru), % 0
0.080 to 0.14
Silicon (Si), % 0.060 to 0.14
0
Tin (Sn), % 0.6 to 1.4
0
Titanium (Ti), % 88.1 to 93
88 to 90.9
Vanadium (V), % 0.6 to 1.4
3.5 to 4.5
Zirconium (Zr), % 0.6 to 1.4
0
Residuals, % 0 to 0.4
0 to 0.4