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Grade 32 Titanium vs. Grade 6 Titanium

Both grade 32 titanium and grade 6 titanium are titanium alloys. Both are furnished in the annealed condition. They have a very high 97% 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 6 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 11
11
Fatigue Strength, MPa 390
290
Poisson's Ratio 0.32
0.32
Reduction in Area, % 28
27
Shear Modulus, GPa 40
39
Shear Strength, MPa 460
530
Tensile Strength: Ultimate (UTS), MPa 770
890
Tensile Strength: Yield (Proof), MPa 670
840

Thermal Properties

Latent Heat of Fusion, J/g 410
410
Maximum Temperature: Mechanical, °C 310
310
Melting Completion (Liquidus), °C 1610
1580
Melting Onset (Solidus), °C 1560
1530
Specific Heat Capacity, J/kg-K 550
550
Thermal Conductivity, W/m-K 7.5
7.8
Thermal Expansion, µm/m-K 8.2
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
1.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 38
36
Density, g/cm3 4.5
4.5
Embodied Carbon, kg CO2/kg material 32
30
Embodied Energy, MJ/kg 530
480
Embodied Water, L/kg 180
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83
92
Resilience: Unit (Modulus of Resilience), kJ/m3 2100
3390
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
35
Strength to Weight: Axial, points 47
55
Strength to Weight: Bending, points 41
46
Thermal Diffusivity, mm2/s 3.0
3.2
Thermal Shock Resistance, points 63
65

Alloy Composition

Aluminum (Al), % 4.5 to 5.5
4.0 to 6.0
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 0.5
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 0.2
Silicon (Si), % 0.060 to 0.14
0
Tin (Sn), % 0.6 to 1.4
2.0 to 3.0
Titanium (Ti), % 88.1 to 93
89.8 to 94
Vanadium (V), % 0.6 to 1.4
0
Zirconium (Zr), % 0.6 to 1.4
0
Residuals, % 0 to 0.4
0 to 0.4