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Grade 21 Titanium vs. Grade 32 Titanium

Both grade 21 titanium and grade 32 titanium are titanium alloys. They have 83% 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 grade 21 titanium and the bottom bar is grade 32 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
110
Elongation at Break, % 9.0 to 17
11
Fatigue Strength, MPa 550 to 660
390
Poisson's Ratio 0.32
0.32
Reduction in Area, % 22
28
Shear Modulus, GPa 51
40
Shear Strength, MPa 550 to 790
460
Tensile Strength: Ultimate (UTS), MPa 890 to 1340
770
Tensile Strength: Yield (Proof), MPa 870 to 1170
670

Thermal Properties

Latent Heat of Fusion, J/g 410
410
Maximum Temperature: Mechanical, °C 310
310
Melting Completion (Liquidus), °C 1740
1610
Melting Onset (Solidus), °C 1690
1560
Specific Heat Capacity, J/kg-K 500
550
Thermal Conductivity, W/m-K 7.5
7.5
Thermal Expansion, µm/m-K 7.1
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 60
38
Density, g/cm3 5.4
4.5
Embodied Carbon, kg CO2/kg material 32
32
Embodied Energy, MJ/kg 490
530
Embodied Water, L/kg 180
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 180
83
Resilience: Unit (Modulus of Resilience), kJ/m3 2760 to 5010
2100
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 32
35
Strength to Weight: Axial, points 46 to 69
47
Strength to Weight: Bending, points 38 to 50
41
Thermal Diffusivity, mm2/s 2.8
3.0
Thermal Shock Resistance, points 66 to 100
63

Alloy Composition


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Aluminum (Al), % 2.5 to 3.5
4.5 to 5.5
Carbon (C), % 0 to 0.050
0 to 0.080
Hydrogen (H), % 0 to 0.015
0 to 0.015
Iron (Fe), % 0 to 0.4
0 to 0.25
Molybdenum (Mo), % 14 to 16
0.6 to 1.2
Niobium (Nb), % 2.2 to 3.2
0
Nitrogen (N), % 0 to 0.030
0 to 0.030
Oxygen (O), % 0 to 0.17
0 to 0.11
Silicon (Si), % 0.15 to 0.25
0.060 to 0.14
Tin (Sn), % 0
0.6 to 1.4
Titanium (Ti), % 76 to 81.2
88.1 to 93
Vanadium (V), % 0
0.6 to 1.4
Zirconium (Zr), % 0
0.6 to 1.4
Residuals, % 0 to 0.4
0 to 0.4