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Grade 32 Titanium vs. Grade 25 Titanium

Both grade 32 titanium and grade 25 titanium are titanium alloys. Both are furnished in the annealed condition. They have a very high 95% 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 25 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 11
11
Fatigue Strength, MPa 390
550
Poisson's Ratio 0.32
0.32
Reduction in Area, % 28
29
Shear Modulus, GPa 40
40
Shear Strength, MPa 460
600
Tensile Strength: Ultimate (UTS), MPa 770
1000
Tensile Strength: Yield (Proof), MPa 670
940

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
7.1
Thermal Expansion, µm/m-K 8.2
9.6

Electrical Properties

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

Otherwise Unclassified Properties

Density, g/cm3 4.5
4.5
Embodied Carbon, kg CO2/kg material 32
43
Embodied Energy, MJ/kg 530
700
Embodied Water, L/kg 180
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83
110
Resilience: Unit (Modulus of Resilience), kJ/m3 2100
4220
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
35
Strength to Weight: Axial, points 47
62
Strength to Weight: Bending, points 41
50
Thermal Diffusivity, mm2/s 3.0
2.8
Thermal Shock Resistance, points 63
71

Alloy Composition

Aluminum (Al), % 4.5 to 5.5
5.5 to 6.8
Carbon (C), % 0 to 0.080
0 to 0.080
Hydrogen (H), % 0 to 0.015
0 to 0.013
Iron (Fe), % 0 to 0.25
0 to 0.4
Molybdenum (Mo), % 0.6 to 1.2
0
Nickel (Ni), % 0
0.3 to 0.8
Nitrogen (N), % 0 to 0.030
0 to 0.050
Oxygen (O), % 0 to 0.11
0 to 0.2
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
86.7 to 90.6
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