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AWS BNi-6 vs. AWS BNi-5

Both AWS BNi-6 and AWS BNi-5 are nickel alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 71% of their average alloy composition in common.

For each property being compared, the top bar is AWS BNi-6 and the bottom bar is AWS BNi-5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
190
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 62
72
Tensile Strength: Ultimate (UTS), MPa 450
470

Thermal Properties

Brazing Temperature, °C 930 to 1090
1150 to 1200
Latent Heat of Fusion, J/g 260
470
Melting Completion (Liquidus), °C 880
1140
Melting Onset (Solidus), °C 880
1080
Specific Heat Capacity, J/kg-K 480
510
Thermal Expansion, µm/m-K 9.8
12

Otherwise Unclassified Properties

Base Metal Price, % relative 55
55
Density, g/cm3 8.2
7.7
Embodied Carbon, kg CO2/kg material 9.4
8.9
Embodied Energy, MJ/kg 130
130
Embodied Water, L/kg 210
260

Common Calculations

Stiffness to Weight: Axial, points 11
13
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 15
17
Strength to Weight: Bending, points 16
17
Thermal Shock Resistance, points 20
15

Alloy Composition

Aluminum (Al), % 0 to 0.050
0 to 0.050
Boron (B), % 0
0 to 0.030
Carbon (C), % 0 to 0.060
0 to 0.060
Chromium (Cr), % 0
18.5 to 19.5
Cobalt (Co), % 0 to 0.1
0 to 0.1
Nickel (Ni), % 87.2 to 90
69.1 to 71.8
Phosphorus (P), % 10 to 12
0 to 0.020
Selenium (Se), % 0 to 0.0050
0 to 0.0050
Silicon (Si), % 0
9.8 to 10.5
Sulfur (S), % 0 to 0.020
0 to 0.020
Titanium (Ti), % 0 to 0.050
0 to 0.050
Zirconium (Zr), % 0 to 0.050
0 to 0.050
Residuals, % 0
0 to 0.5