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Nickel 686 vs. AWS BNi-7

Both nickel 686 and AWS BNi-7 are nickel alloys. They have 70% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is nickel 686 and the bottom bar is AWS BNi-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
170
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 77
67
Tensile Strength: Ultimate (UTS), MPa 780
550

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Melting Completion (Liquidus), °C 1380
890
Melting Onset (Solidus), °C 1340
890
Specific Heat Capacity, J/kg-K 420
490
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 70
55
Density, g/cm3 9.0
8.0
Embodied Carbon, kg CO2/kg material 12
8.8
Embodied Energy, MJ/kg 170
120
Embodied Water, L/kg 300
240

Common Calculations

Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 22
23
Strength to Weight: Axial, points 24
19
Strength to Weight: Bending, points 21
19
Thermal Shock Resistance, points 21
21

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0
0 to 0.010
Carbon (C), % 0 to 0.010
0 to 0.060
Chromium (Cr), % 19 to 23
13 to 15
Cobalt (Co), % 0
0 to 0.1
Iron (Fe), % 0 to 5.0
0 to 0.2
Manganese (Mn), % 0 to 0.75
0 to 0.040
Molybdenum (Mo), % 15 to 17
0
Nickel (Ni), % 49.5 to 63
73.3 to 77.3
Phosphorus (P), % 0 to 0.040
9.7 to 10.5
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.080
0 to 0.1
Sulfur (S), % 0 to 0.020
0 to 0.020
Titanium (Ti), % 0.020 to 0.25
0 to 0.050
Tungsten (W), % 3.0 to 4.4
0
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5