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ASTM F15 Fe-Ni-Co vs. AWS BNi-8

ASTM F15 Fe-Ni-Co belongs to the iron alloys classification, while AWS BNi-8 belongs to the nickel alloys. They have a modest 30% of their average alloy composition in common, which, by itself, doesn't mean much. There are 19 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ASTM F15 Fe-Ni-Co and the bottom bar is AWS BNi-8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
180
Poisson's Ratio 0.3
0.32
Shear Modulus, GPa 73
67
Tensile Strength: Ultimate (UTS), MPa 520 to 880
570

Thermal Properties

Latent Heat of Fusion, J/g 270
390
Melting Completion (Liquidus), °C 1410
1010
Melting Onset (Solidus), °C 1450
980
Specific Heat Capacity, J/kg-K 460
480
Thermal Expansion, µm/m-K 6.0
13

Otherwise Unclassified Properties

Base Metal Price, % relative 49
46
Density, g/cm3 8.3
7.9
Embodied Carbon, kg CO2/kg material 5.2
8.2
Embodied Energy, MJ/kg 71
120
Embodied Water, L/kg 190
220

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 17 to 29
20
Strength to Weight: Bending, points 17 to 24
19
Thermal Shock Resistance, points 32 to 55
17

Alloy Composition

Aluminum (Al), % 0 to 0.1
0 to 0.050
Carbon (C), % 0 to 0.040
0 to 0.060
Chromium (Cr), % 0 to 0.2
0
Cobalt (Co), % 16 to 18
0 to 0.1
Copper (Cu), % 0 to 0.2
4.0 to 5.0
Iron (Fe), % 50.3 to 56
0
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
21.5 to 24.5
Molybdenum (Mo), % 0 to 0.2
0
Nickel (Ni), % 28 to 30
61.6 to 68.5
Phosphorus (P), % 0
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.2
6.0 to 8.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.1
0 to 0.050
Zirconium (Zr), % 0 to 0.1
0 to 0.050
Residuals, % 0
0 to 0.5