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Grade 12 Titanium vs. AWS ERTi-1

Both grade 12 titanium and AWS ERTi-1 are titanium alloys. They have a very high 99% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is grade 12 titanium and the bottom bar is AWS ERTi-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 21
24
Fatigue Strength, MPa 280
120
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 39
41
Tensile Strength: Ultimate (UTS), MPa 530
240
Tensile Strength: Yield (Proof), MPa 410
170

Thermal Properties

Latent Heat of Fusion, J/g 420
420
Maximum Temperature: Mechanical, °C 320
320
Melting Completion (Liquidus), °C 1660
1670
Melting Onset (Solidus), °C 1610
1620
Specific Heat Capacity, J/kg-K 540
540
Thermal Conductivity, W/m-K 21
21
Thermal Expansion, µm/m-K 9.6
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 6.6
7.1

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
52
Resilience: Unit (Modulus of Resilience), kJ/m3 770
140
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
35
Strength to Weight: Axial, points 32
15
Strength to Weight: Bending, points 32
19
Thermal Diffusivity, mm2/s 8.5
8.7
Thermal Shock Resistance, points 37
19

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Hydrogen (H), % 0 to 0.015
0 to 0.0050
Iron (Fe), % 0 to 0.3
0 to 0.080
Molybdenum (Mo), % 0.2 to 0.4
0
Nickel (Ni), % 0.6 to 0.9
0
Nitrogen (N), % 0 to 0.030
0 to 0.012
Oxygen (O), % 0 to 0.25
0.030 to 0.1
Titanium (Ti), % 97.6 to 99.2
99.773 to 99.97
Residuals, % 0 to 0.4
0