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Grade 27 Titanium vs. Grade 24 Titanium

Both grade 27 titanium and grade 24 titanium are titanium alloys. Both are furnished in the annealed condition. They have 90% 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 27 titanium and the bottom bar is grade 24 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 27
11
Fatigue Strength, MPa 170
550
Poisson's Ratio 0.32
0.32
Reduction in Area, % 34
28
Shear Modulus, GPa 41
40
Shear Strength, MPa 180
610
Tensile Strength: Ultimate (UTS), MPa 270
1010
Tensile Strength: Yield (Proof), MPa 230
940

Thermal Properties

Latent Heat of Fusion, J/g 420
410
Maximum Temperature: Mechanical, °C 320
340
Melting Completion (Liquidus), °C 1660
1610
Melting Onset (Solidus), °C 1610
1560
Specific Heat Capacity, J/kg-K 540
560
Thermal Conductivity, W/m-K 21
7.1
Thermal Expansion, µm/m-K 8.7
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
2.0

Otherwise Unclassified Properties

Density, g/cm3 4.5
4.5
Embodied Carbon, kg CO2/kg material 33
43
Embodied Energy, MJ/kg 530
710
Embodied Water, L/kg 320
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
110
Resilience: Unit (Modulus of Resilience), kJ/m3 240
4160
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
35
Strength to Weight: Axial, points 17
63
Strength to Weight: Bending, points 21
50
Thermal Diffusivity, mm2/s 8.8
2.9
Thermal Shock Resistance, points 21
72

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.8
Carbon (C), % 0 to 0.080
0 to 0.080
Hydrogen (H), % 0 to 0.015
0 to 0.015
Iron (Fe), % 0 to 0.2
0 to 0.4
Nitrogen (N), % 0 to 0.030
0 to 0.050
Oxygen (O), % 0 to 0.18
0 to 0.2
Palladium (Pd), % 0
0.040 to 0.080
Ruthenium (Ru), % 0.080 to 0.14
0
Titanium (Ti), % 99 to 99.92
87.5 to 91
Vanadium (V), % 0
3.5 to 4.5
Residuals, % 0
0 to 0.4