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Grade 1 Titanium vs. Grade 37 Titanium

Both grade 1 titanium and grade 37 titanium are titanium alloys. Both are furnished in the annealed condition. They have a very high 98% 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 1 titanium and the bottom bar is grade 37 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 28
22
Fatigue Strength, MPa 170
170
Poisson's Ratio 0.32
0.32
Reduction in Area, % 36
34
Shear Modulus, GPa 39
40
Shear Strength, MPa 200
240
Tensile Strength: Ultimate (UTS), MPa 310
390
Tensile Strength: Yield (Proof), MPa 220
250

Thermal Properties

Latent Heat of Fusion, J/g 420
420
Maximum Temperature: Mechanical, °C 320
310
Melting Completion (Liquidus), °C 1660
1650
Melting Onset (Solidus), °C 1610
1600
Specific Heat Capacity, J/kg-K 540
550
Thermal Conductivity, W/m-K 20
21
Thermal Expansion, µm/m-K 8.8
8.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
6.8

Otherwise Unclassified Properties

Base Metal Price, % relative 37
36
Density, g/cm3 4.5
4.5
Embodied Carbon, kg CO2/kg material 31
31
Embodied Energy, MJ/kg 510
500
Embodied Water, L/kg 110
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79
76
Resilience: Unit (Modulus of Resilience), kJ/m3 230
280
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
35
Strength to Weight: Axial, points 19
24
Strength to Weight: Bending, points 23
26
Thermal Diffusivity, mm2/s 8.2
8.4
Thermal Shock Resistance, points 24
29

Alloy Composition


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Aluminum (Al), % 0
1.0 to 2.0
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 0.3
Nitrogen (N), % 0 to 0.030
0 to 0.030
Oxygen (O), % 0 to 0.18
0 to 0.25
Titanium (Ti), % 99.095 to 100
96.9 to 99
Residuals, % 0 to 0.4
0 to 0.4