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AWS BNi-9 vs. Grade 31 Titanium

AWS BNi-9 belongs to the nickel alloys classification, while grade 31 titanium belongs to the titanium 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 AWS BNi-9 and the bottom bar is grade 31 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Poisson's Ratio 0.3
0.32
Shear Modulus, GPa 72
41
Tensile Strength: Ultimate (UTS), MPa 580
510

Thermal Properties

Latent Heat of Fusion, J/g 300
420
Melting Completion (Liquidus), °C 1060
1660
Melting Onset (Solidus), °C 1060
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Expansion, µm/m-K 12
8.7

Otherwise Unclassified Properties

Density, g/cm3 8.4
4.5
Embodied Carbon, kg CO2/kg material 9.3
36
Embodied Energy, MJ/kg 130
600
Embodied Water, L/kg 260
230

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 23
35
Strength to Weight: Axial, points 19
32
Strength to Weight: Bending, points 18
32
Thermal Shock Resistance, points 19
39

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 3.3 to 4.0
0
Carbon (C), % 0 to 0.060
0 to 0.080
Chromium (Cr), % 13.5 to 16.5
0
Cobalt (Co), % 0 to 0.1
0.2 to 0.8
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 1.5
0 to 0.3
Nickel (Ni), % 77.1 to 83.3
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.35
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.020
0
Selenium (Se), % 0 to 0.0050
0
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0 to 0.050
97.9 to 99.76
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0
0 to 0.4