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Grade 17 Titanium vs. AWS BNi-5a

Grade 17 titanium belongs to the titanium alloys classification, while AWS BNi-5a belongs to the nickel alloys. There are 18 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is grade 17 titanium and the bottom bar is AWS BNi-5a.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 38
72
Tensile Strength: Ultimate (UTS), MPa 270
480

Thermal Properties

Latent Heat of Fusion, J/g 420
420
Melting Completion (Liquidus), °C 1660
1150
Melting Onset (Solidus), °C 1610
1070
Specific Heat Capacity, J/kg-K 540
500
Thermal Expansion, µm/m-K 8.7
12

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 36
9.0
Embodied Energy, MJ/kg 600
130
Embodied Water, L/kg 230
260

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 17
17
Strength to Weight: Bending, points 21
17
Thermal Shock Resistance, points 21
15

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0
1.0 to 1.5
Carbon (C), % 0 to 0.080
0 to 0.1
Chromium (Cr), % 0
18.5 to 19.5
Cobalt (Co), % 0
0 to 0.1
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
0 to 0.5
Nickel (Ni), % 0
70.1 to 73.5
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0
7.0 to 7.5
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 99.015 to 99.96
0 to 0.050
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5