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Grade 20 Titanium vs. AWS BNi-7

Grade 20 titanium belongs to the titanium alloys classification, while AWS BNi-7 belongs to the nickel alloys. There are 18 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 grade 20 titanium and the bottom bar is AWS BNi-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
170
Poisson's Ratio 0.32
0.3
Shear Modulus, GPa 47
67
Tensile Strength: Ultimate (UTS), MPa 900 to 1270
550

Thermal Properties

Latent Heat of Fusion, J/g 400
280
Melting Completion (Liquidus), °C 1660
890
Melting Onset (Solidus), °C 1600
890
Specific Heat Capacity, J/kg-K 520
490
Thermal Expansion, µm/m-K 9.6
11

Otherwise Unclassified Properties

Density, g/cm3 5.0
8.0
Embodied Carbon, kg CO2/kg material 52
8.8
Embodied Energy, MJ/kg 860
120
Embodied Water, L/kg 350
240

Common Calculations

Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 33
23
Strength to Weight: Axial, points 50 to 70
19
Strength to Weight: Bending, points 41 to 52
19
Thermal Shock Resistance, points 55 to 77
21

Alloy Composition

Aluminum (Al), % 3.0 to 4.0
0 to 0.050
Boron (B), % 0
0 to 0.010
Carbon (C), % 0 to 0.050
0 to 0.060
Chromium (Cr), % 5.5 to 6.5
13 to 15
Cobalt (Co), % 0
0 to 0.1
Hydrogen (H), % 0 to 0.020
0
Iron (Fe), % 0 to 0.3
0 to 0.2
Manganese (Mn), % 0
0 to 0.040
Molybdenum (Mo), % 3.5 to 4.5
0
Nickel (Ni), % 0
73.3 to 77.3
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.12
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
9.7 to 10.5
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0
0 to 0.1
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 71 to 77
0 to 0.050
Vanadium (V), % 7.5 to 8.5
0
Zirconium (Zr), % 3.5 to 4.5
0 to 0.050
Residuals, % 0
0 to 0.5