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Grade 38 Titanium vs. AWS BNi-8

Grade 38 titanium belongs to the titanium alloys classification, while AWS BNi-8 belongs to the nickel alloys. There are 19 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is grade 38 titanium and the bottom bar is AWS BNi-8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
180
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 40
67
Tensile Strength: Ultimate (UTS), MPa 1000
570

Thermal Properties

Latent Heat of Fusion, J/g 410
390
Melting Completion (Liquidus), °C 1620
1010
Melting Onset (Solidus), °C 1570
980
Specific Heat Capacity, J/kg-K 550
480
Thermal Expansion, µm/m-K 9.3
13

Otherwise Unclassified Properties

Base Metal Price, % relative 36
46
Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 35
8.2
Embodied Energy, MJ/kg 560
120
Embodied Water, L/kg 160
220

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 62
20
Strength to Weight: Bending, points 49
19
Thermal Shock Resistance, points 72
17

Alloy Composition

Aluminum (Al), % 3.5 to 4.5
0 to 0.050
Carbon (C), % 0 to 0.080
0 to 0.060
Cobalt (Co), % 0
0 to 0.1
Copper (Cu), % 0
4.0 to 5.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 1.2 to 1.8
0
Manganese (Mn), % 0
21.5 to 24.5
Nickel (Ni), % 0
61.6 to 68.5
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0.2 to 0.3
0
Phosphorus (P), % 0
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0
6.0 to 8.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 89.9 to 93.1
0 to 0.050
Vanadium (V), % 2.0 to 3.0
0
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5