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Grade 36 Titanium vs. Grade 38 Titanium

Both grade 36 titanium and grade 38 titanium are titanium alloys. Both are furnished in the annealed condition. They have 55% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is grade 36 titanium and the bottom bar is grade 38 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 11
11
Fatigue Strength, MPa 300
530
Poisson's Ratio 0.36
0.32
Shear Modulus, GPa 39
40
Shear Strength, MPa 320
600
Tensile Strength: Ultimate (UTS), MPa 530
1000
Tensile Strength: Yield (Proof), MPa 520
910

Thermal Properties

Latent Heat of Fusion, J/g 370
410
Maximum Temperature: Mechanical, °C 320
330
Melting Completion (Liquidus), °C 2020
1620
Melting Onset (Solidus), °C 1950
1570
Specific Heat Capacity, J/kg-K 420
550
Thermal Expansion, µm/m-K 8.1
9.3

Otherwise Unclassified Properties

Density, g/cm3 6.3
4.5
Embodied Carbon, kg CO2/kg material 58
35
Embodied Energy, MJ/kg 920
560
Embodied Water, L/kg 130
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59
110
Resilience: Unit (Modulus of Resilience), kJ/m3 1260
3840
Stiffness to Weight: Axial, points 9.3
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 23
62
Strength to Weight: Bending, points 23
49
Thermal Shock Resistance, points 45
72

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.5
Carbon (C), % 0 to 0.030
0 to 0.080
Hydrogen (H), % 0 to 0.0035
0 to 0.015
Iron (Fe), % 0 to 0.030
1.2 to 1.8
Niobium (Nb), % 42 to 47
0
Nitrogen (N), % 0 to 0.030
0 to 0.030
Oxygen (O), % 0 to 0.16
0.2 to 0.3
Titanium (Ti), % 52.3 to 58
89.9 to 93.1
Vanadium (V), % 0
2.0 to 3.0
Residuals, % 0 to 0.4
0 to 0.4