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AWS BNi-1 vs. AWS BNi-4

Both AWS BNi-1 and AWS BNi-4 are nickel alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 79% of their average alloy composition in common.

For each property being compared, the top bar is AWS BNi-1 and the bottom bar is AWS BNi-4.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
180
Poisson's Ratio 0.3
0.31
Shear Modulus, GPa 70
67
Tensile Strength: Ultimate (UTS), MPa 450
430

Thermal Properties

Brazing Temperature, °C 1070 to 1200
1010 to 1180
Latent Heat of Fusion, J/g 360
340
Melting Completion (Liquidus), °C 1040
1070
Melting Onset (Solidus), °C 980
980
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 55
60
Density, g/cm3 8.0
8.5
Embodied Carbon, kg CO2/kg material 8.8
10
Embodied Energy, MJ/kg 120
140
Embodied Water, L/kg 240
220

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 16
14
Strength to Weight: Bending, points 16
15
Thermal Shock Resistance, points 15
16

Alloy Composition

Aluminum (Al), % 0 to 0.050
0 to 0.050
Boron (B), % 2.8 to 3.5
1.5 to 2.2
Carbon (C), % 0.6 to 0.9
0 to 0.060
Chromium (Cr), % 13 to 15
0
Cobalt (Co), % 0 to 0.1
0 to 0.1
Iron (Fe), % 4.0 to 5.0
0 to 1.5
Nickel (Ni), % 69.8 to 75.7
91.4 to 95.5
Phosphorus (P), % 0 to 0.020
0 to 0.020
Selenium (Se), % 0 to 0.0050
0 to 0.0050
Silicon (Si), % 4.0 to 5.0
3.0 to 4.0
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