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Grade 38 Titanium vs. Grade 23 Titanium

Both grade 38 titanium and grade 23 titanium are titanium alloys. They have a very high 97% of their average alloy composition in common. There are 31 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 38 titanium and the bottom bar is grade 23 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 11
6.7 to 11
Fatigue Strength, MPa 530
470 to 500
Poisson's Ratio 0.32
0.32
Reduction in Area, % 29
30
Shear Modulus, GPa 40
40
Shear Strength, MPa 600
540 to 570
Tensile Strength: Ultimate (UTS), MPa 1000
930 to 940
Tensile Strength: Yield (Proof), MPa 910
850 to 870

Thermal Properties

Latent Heat of Fusion, J/g 410
410
Maximum Temperature: Mechanical, °C 330
340
Melting Completion (Liquidus), °C 1620
1610
Melting Onset (Solidus), °C 1570
1560
Specific Heat Capacity, J/kg-K 550
560
Thermal Conductivity, W/m-K 8.0
7.1
Thermal Expansion, µm/m-K 9.3
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 36
36
Density, g/cm3 4.5
4.4
Embodied Carbon, kg CO2/kg material 35
38
Embodied Energy, MJ/kg 560
610
Embodied Water, L/kg 160
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
61 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 3840
3430 to 3560
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
35
Strength to Weight: Axial, points 62
58 to 59
Strength to Weight: Bending, points 49
48
Thermal Diffusivity, mm2/s 3.2
2.9
Thermal Shock Resistance, points 72
67 to 68

Alloy Composition

Aluminum (Al), % 3.5 to 4.5
5.5 to 6.5
Carbon (C), % 0 to 0.080
0 to 0.080
Hydrogen (H), % 0 to 0.015
0 to 0.013
Iron (Fe), % 1.2 to 1.8
0 to 0.25
Nitrogen (N), % 0 to 0.030
0 to 0.030
Oxygen (O), % 0.2 to 0.3
0 to 0.13
Titanium (Ti), % 89.9 to 93.1
88.1 to 91
Vanadium (V), % 2.0 to 3.0
3.5 to 4.5
Residuals, % 0 to 0.4
0 to 0.4