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Grade 36 Titanium vs. Grade 7 Titanium

Both grade 36 titanium and grade 7 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 7 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 11
24
Fatigue Strength, MPa 300
250
Poisson's Ratio 0.36
0.32
Shear Modulus, GPa 39
38
Shear Strength, MPa 320
270
Tensile Strength: Ultimate (UTS), MPa 530
420
Tensile Strength: Yield (Proof), MPa 520
340

Thermal Properties

Latent Heat of Fusion, J/g 370
420
Maximum Temperature: Mechanical, °C 320
320
Melting Completion (Liquidus), °C 2020
1660
Melting Onset (Solidus), °C 1950
1610
Specific Heat Capacity, J/kg-K 420
540
Thermal Expansion, µm/m-K 8.1
9.2

Otherwise Unclassified Properties

Density, g/cm3 6.3
4.5
Embodied Carbon, kg CO2/kg material 58
47
Embodied Energy, MJ/kg 920
800
Embodied Water, L/kg 130
470

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59
95
Resilience: Unit (Modulus of Resilience), kJ/m3 1260
560
Stiffness to Weight: Axial, points 9.3
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 23
26
Strength to Weight: Bending, points 23
28
Thermal Shock Resistance, points 45
31

Alloy Composition

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
0 to 0.3
Niobium (Nb), % 42 to 47
0
Nitrogen (N), % 0 to 0.030
0 to 0.030
Oxygen (O), % 0 to 0.16
0 to 0.25
Palladium (Pd), % 0
0.12 to 0.25
Titanium (Ti), % 52.3 to 58
98.7 to 99.88
Residuals, % 0
0 to 0.4