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AWS ERTi-7 vs. Titanium 6-7

Both AWS ERTi-7 and titanium 6-7 are titanium alloys. They have 87% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AWS ERTi-7 and the bottom bar is titanium 6-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Elongation at Break, % 20
11
Fatigue Strength, MPa 190
530
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 40
45
Tensile Strength: Ultimate (UTS), MPa 340
1020
Tensile Strength: Yield (Proof), MPa 280
900

Thermal Properties

Latent Heat of Fusion, J/g 420
410
Maximum Temperature: Mechanical, °C 320
300
Melting Completion (Liquidus), °C 1670
1700
Melting Onset (Solidus), °C 1620
1650
Specific Heat Capacity, J/kg-K 540
520
Thermal Expansion, µm/m-K 8.7
9.3

Otherwise Unclassified Properties

Density, g/cm3 4.5
5.1
Embodied Carbon, kg CO2/kg material 47
34
Embodied Energy, MJ/kg 800
540
Embodied Water, L/kg 470
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
110
Resilience: Unit (Modulus of Resilience), kJ/m3 360
3460
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
32
Strength to Weight: Axial, points 21
56
Strength to Weight: Bending, points 24
44
Thermal Shock Resistance, points 26
66

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0 to 0.030
0 to 0.080
Hydrogen (H), % 0 to 0.0080
0 to 0.0090
Iron (Fe), % 0 to 0.12
0 to 0.25
Molybdenum (Mo), % 0
6.5 to 7.5
Niobium (Nb), % 0
6.5 to 7.5
Nitrogen (N), % 0 to 0.015
0 to 0.050
Oxygen (O), % 0.080 to 0.16
0 to 0.2
Palladium (Pd), % 0.12 to 0.25
0
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 99.417 to 99.8
84.9 to 88