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AWS ERTi-12 vs. Type 1 Niobium

AWS ERTi-12 belongs to the titanium alloys classification, while Type 1 niobium belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 12
29
Poisson's Ratio 0.32
0.4
Shear Modulus, GPa 41
38
Tensile Strength: Ultimate (UTS), MPa 480
140
Tensile Strength: Yield (Proof), MPa 340
82

Thermal Properties

Latent Heat of Fusion, J/g 420
320
Specific Heat Capacity, J/kg-K 540
270
Thermal Conductivity, W/m-K 21
52
Thermal Expansion, µm/m-K 8.7
7.3

Otherwise Unclassified Properties

Density, g/cm3 4.5
8.6
Embodied Water, L/kg 110
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
35
Resilience: Unit (Modulus of Resilience), kJ/m3 550
32
Stiffness to Weight: Axial, points 13
6.8
Stiffness to Weight: Bending, points 35
18
Strength to Weight: Axial, points 30
4.6
Strength to Weight: Bending, points 30
7.1
Thermal Diffusivity, mm2/s 8.7
23
Thermal Shock Resistance, points 37
13

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.010
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0 to 0.0080
0 to 0.0015
Iron (Fe), % 0 to 0.15
0 to 0.0050
Molybdenum (Mo), % 0.2 to 0.4
0 to 0.010
Nickel (Ni), % 0.060 to 0.090
0 to 0.0050
Niobium (Nb), % 0
99.7 to 100
Nitrogen (N), % 0 to 0.015
0 to 0.010
Oxygen (O), % 0.080 to 0.16
0 to 0.015
Silicon (Si), % 0
0 to 0.0050
Tantalum (Ta), % 0
0 to 0.1
Titanium (Ti), % 99.147 to 99.66
0 to 0.020
Tungsten (W), % 0
0 to 0.030
Zirconium (Zr), % 0
0 to 0.020