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Grade 32 Titanium vs. Grade 21 Titanium

Both grade 32 titanium and grade 21 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 32 titanium and the bottom bar is grade 21 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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