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AWS BNi-7 vs. Grade 28 Titanium

AWS BNi-7 belongs to the nickel alloys classification, while grade 28 titanium belongs to the titanium 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 AWS BNi-7 and the bottom bar is grade 28 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 170
110
Poisson's Ratio 0.3
0.32
Shear Modulus, GPa 67
40
Tensile Strength: Ultimate (UTS), MPa 550
690 to 980

Thermal Properties

Latent Heat of Fusion, J/g 280
410
Melting Completion (Liquidus), °C 890
1640
Melting Onset (Solidus), °C 890
1590
Specific Heat Capacity, J/kg-K 490
550
Thermal Expansion, µm/m-K 11
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 55
36
Density, g/cm3 8.0
4.5
Embodied Carbon, kg CO2/kg material 8.8
37
Embodied Energy, MJ/kg 120
600
Embodied Water, L/kg 240
370

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 23
35
Strength to Weight: Axial, points 19
43 to 61
Strength to Weight: Bending, points 19
39 to 49
Thermal Shock Resistance, points 21
47 to 66

Alloy Composition

Aluminum (Al), % 0 to 0.050
2.5 to 3.5
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.060
0 to 0.080
Chromium (Cr), % 13 to 15
0
Cobalt (Co), % 0 to 0.1
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.2
0 to 0.25
Manganese (Mn), % 0 to 0.040
0
Nickel (Ni), % 73.3 to 77.3
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.15
Phosphorus (P), % 9.7 to 10.5
0
Ruthenium (Ru), % 0
0.080 to 0.14
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.1
0
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0 to 0.050
92.4 to 95.4
Vanadium (V), % 0
2.0 to 3.0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0
0 to 0.4