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Grade 38 Titanium vs. AWS ERTi-5

Both grade 38 titanium and AWS ERTi-5 are titanium alloys. They have a very high 96% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grade 38 titanium and the bottom bar is AWS ERTi-5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 11
10
Fatigue Strength, MPa 530
470
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 40
40
Tensile Strength: Ultimate (UTS), MPa 1000
900
Tensile Strength: Yield (Proof), MPa 910
830

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
9.6

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
87
Resilience: Unit (Modulus of Resilience), kJ/m3 3840
3250
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
35
Strength to Weight: Axial, points 62
56
Strength to Weight: Bending, points 49
46
Thermal Diffusivity, mm2/s 3.2
2.9
Thermal Shock Resistance, points 72
63

Alloy Composition


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Aluminum (Al), % 3.5 to 4.5
5.5 to 6.8
Carbon (C), % 0 to 0.080
0 to 0.050
Hydrogen (H), % 0 to 0.015
0 to 0.015
Iron (Fe), % 1.2 to 1.8
0 to 0.22
Nitrogen (N), % 0 to 0.030
0 to 0.030
Oxygen (O), % 0.2 to 0.3
0.12 to 0.2
Titanium (Ti), % 89.9 to 93.1
88.2 to 90.9
Vanadium (V), % 2.0 to 3.0
3.5 to 4.5
Residuals, % 0 to 0.4
0