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Grade 32 Titanium vs. Grade 31 Titanium

Both grade 32 titanium and grade 31 titanium are titanium alloys. Both are furnished in the annealed condition. They have a moderately high 91% 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 grade 32 titanium and the bottom bar is grade 31 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 11
20
Fatigue Strength, MPa 390
300
Poisson's Ratio 0.32
0.32
Reduction in Area, % 28
34
Shear Modulus, GPa 40
41
Shear Strength, MPa 460
320
Tensile Strength: Ultimate (UTS), MPa 770
510
Tensile Strength: Yield (Proof), MPa 670
450

Thermal Properties

Latent Heat of Fusion, J/g 410
420
Maximum Temperature: Mechanical, °C 310
320
Melting Completion (Liquidus), °C 1610
1660
Melting Onset (Solidus), °C 1560
1610
Specific Heat Capacity, J/kg-K 550
540
Thermal Conductivity, W/m-K 7.5
21
Thermal Expansion, µm/m-K 8.2
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
6.9

Otherwise Unclassified Properties

Density, g/cm3 4.5
4.5
Embodied Carbon, kg CO2/kg material 32
36
Embodied Energy, MJ/kg 530
600
Embodied Water, L/kg 180
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83
99
Resilience: Unit (Modulus of Resilience), kJ/m3 2100
940
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
35
Strength to Weight: Axial, points 47
32
Strength to Weight: Bending, points 41
32
Thermal Diffusivity, mm2/s 3.0
8.5
Thermal Shock Resistance, points 63
39

Alloy Composition

Aluminum (Al), % 4.5 to 5.5
0
Carbon (C), % 0 to 0.080
0 to 0.080
Cobalt (Co), % 0
0.2 to 0.8
Hydrogen (H), % 0 to 0.015
0 to 0.015
Iron (Fe), % 0 to 0.25
0 to 0.3
Molybdenum (Mo), % 0.6 to 1.2
0
Nitrogen (N), % 0 to 0.030
0 to 0.050
Oxygen (O), % 0 to 0.11
0 to 0.35
Palladium (Pd), % 0
0.040 to 0.080
Silicon (Si), % 0.060 to 0.14
0
Tin (Sn), % 0.6 to 1.4
0
Titanium (Ti), % 88.1 to 93
97.9 to 99.76
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